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CN112928733A - Distributed spare power automatic switching system and control method thereof - Google Patents

Distributed spare power automatic switching system and control method thereof Download PDF

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Publication number
CN112928733A
CN112928733A CN202110394334.1A CN202110394334A CN112928733A CN 112928733 A CN112928733 A CN 112928733A CN 202110394334 A CN202110394334 A CN 202110394334A CN 112928733 A CN112928733 A CN 112928733A
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China
Prior art keywords
main transformer
protection device
switch
module
segment
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Inventor
郑睿
陈亚琳
刘婵
张文波
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Nanjing Vocational University of Industry Technology NUIT
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Nanjing Vocational University of Industry Technology NUIT
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Priority to CN202110394334.1A priority Critical patent/CN112928733A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/06—Details with automatic reconnection
    • H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention discloses a distributed spare power automatic switching system, which comprises main transformer protection devices configured on main transformers and sectional protection devices configured on sections; the main transformer protection device collects bus voltage, step-down current analog quantity and main transformer switch position state corresponding to a main transformer, converts the collected bus voltage, step-down current analog quantity and main transformer switch position state into GOOSE state switch quantity, carries out information interaction with the segmented protection device, transmits the GOOSE state switch quantity to the segmented protection device, and controls a main transformer switch through interactive information acquired from the segmented protection device. Under the condition that a secondary cable and a spare power automatic switching device are not required to be added, the spare power automatic switching function of the transformer substation without the spare power automatic switching device can be realized, and the influence of the transformation cost and the field transformation on the operated protection device is reduced.

Description

Distributed spare power automatic switching system and control method thereof
Technical Field
The invention relates to the field of power systems, in particular to a distributed spare power automatic switching system and a control method thereof.
Background
The automatic throw-in device (also known as a spare power automatic throw-in device) of the spare power supply is an automatic device capable of improving the power supply reliability of a user. During power grid planning, a transformer substation generally supplies power by multiple power sources, and when the multiple power sources are closed and supply power simultaneously, the problems of overlarge short-circuit current, excessively complex setting of fixed values of an electromagnetic ring network and a protection device and the like can occur. Therefore, when the transformer substation generally has multi-path power supply, an open-loop power supply mode can be adopted, an open-loop point switch is arranged in the transformer substation, one path of power supply or the multi-path power supply supplies power in an open-loop mode during normal operation, when a certain path of power supply is interrupted due to failure, the spare power automatic switching device can quickly switch on the open-loop point switch where the spare power supply is located after the fault is isolated, the spare power supply is used for continuously supplying power, the condition that the power of a user is lost for a long time due to the fault of a power grid system is avoided, and the reliability of power supply of the user is ensured. In recent years, with the improvement of requirements on safe and stable operation of a power grid, reliability of power supply of users and the like, the spare power automatic switching device is more and more widely applied to a transformer substation.
The protection function configuration of part of early substations is incomplete, so that the occasions where the spare power automatic switching devices must be configured are not configured, for example, a, although double power supplies are used for supplying power, a certain power supply is frequently disconnected to serve as a standby power supply; b. some auxiliary machines are provided with spare machine sets; c. a service power supply or a utility power supply with a backup power supply. Although some substations need to be provided with the automatic backup power switching devices, due to the limitation of installation space of the switch cabinet, no spare switch cabinet is available for installing the automatic backup power switching devices. In the above situations, because the substation has no automatic switching function of the standby power supply, when the main power supply fails, the load cannot recover power supply after power loss.
Although installation space of the spare power automatic switching device exists in many already-put-into-operation substations, the addition of the spare power automatic switching device increases a secondary cable, which increases transformation cost, and transformation of a secondary circuit affects already-put-into-operation protection devices, possibly causing protection misoperation.
Disclosure of Invention
The invention aims to provide a distributed spare power automatic switching system and a control method thereof, which can realize the spare power automatic switching function of a transformer substation without a spare power automatic switching device under the condition that a secondary cable and the spare power automatic switching device are not required to be added, and reduce the influence of the transformation cost and the field transformation on the operated protection device.
In order to achieve the above object, according to one aspect of the present invention, the present invention provides the following technical solutions:
a distributed spare power automatic switching system is provided,
the device comprises main transformer protection devices configured on each main transformer and sectional protection devices configured on sections;
the main transformer protection device collects bus voltage, low-level current analog quantity and main transformer switch position state of a corresponding main transformer, converts the collected bus voltage, low-level current analog quantity and main transformer switch position state into GOOSE state switch quantity, carries out information interaction with the sectional protection device, transmits the GOOSE state switch quantity to the sectional protection device, and controls a main transformer switch through interactive information obtained from the sectional protection device;
the automatic bus transfer system comprises a main transformer protection device, a section protection device and a spare power automatic transfer logic judgment module, wherein the section protection device carries out information interaction with the main transformer protection device and collects the position state of a section switch, the section protection device comprises the spare power automatic transfer logic judgment module which stores a system operation mode and executes charge and discharge judgment logic, fault judgment logic, isolation fault logic and closing restoration power supply logic, the spare power automatic transfer logic judgment module receives the position state of the section switch and carries out logic judgment by combining with GOOSE state switching value, a logic judgment result is transmitted to the main transformer protection device, and the section switch is controlled according to the logic judgment result.
As a preferred scheme of the distributed backup power automatic switching system, the main transformer protection device comprises a main transformer acquisition module for acquiring bus voltage, low-level current analog quantity and main transformer switch position state of a corresponding main transformer, a signal conversion module for converting the acquired bus voltage, low-level current analog quantity and main transformer switch position state into GOOSE state switch quantity, a main transformer information interaction module for performing information interaction outwards, and a main transformer execution module for controlling a main transformer switch;
the main transformer information interaction module is connected with the main transformer execution module.
As a preferable scheme of the distributed backup power automatic switching system, the segment protection device further includes a segment collection module for collecting a position state of the segment switch, a segment execution module for controlling the segment switch, and a segment information interaction module for performing information interaction to the outside;
the subsection acquisition module is connected with the spare power automatic switching logic judgment module, the spare power automatic switching logic judgment module is connected with the subsection information interaction module and the subsection execution module, and the subsection information interaction module carries out information interaction with the main transformer information interaction module.
As a preferable scheme of the distributed backup power automatic switching system, the main transformer information interaction module and the segment information interaction module perform real-time information interaction through a communication network.
As a preferable scheme of the distributed backup power automatic switching system, the communication network is a station control layer network of a substation.
A control method of a distributed spare power automatic switching system comprises the following steps:
1) the bus voltage, the low-current analog quantity and the main transformer switch position state collected by the main transformer protection device are converted into a GOOSE state switching value, and the GOOSE state switching value is sent to the subsection protection device;
2) the sectional protection device collects the position state of a sectional switch;
3) the sectional protection device determines the system operation mode according to the received GOOSE state switching quantity and the collected sectional switch position state sent by the main transformer protection device through the stored system operation mode, the execution charge-discharge judgment logic, the fault judgment logic, the isolation fault logic and the closing recovery power supply logic,
when a system fails to cause the power failure of a bus, a spare power automatic switching logic judgment module of the sectional protection device carries out starting logic judgment according to the received GOOSE state switching value, a spare power automatic switching logic judgment module of the sectional protection device determines a fault range according to the received GOOSE state switching value, a GOOSE tripping command is sent to a main transformer protection device to execute a tripping outlet, the fault is isolated, after the spare power automatic switching logic judgment module of the sectional protection device judges that the fault is isolated, a closing command is executed, a hot spare switch is switched on, and the power supply of the power failure bus is recovered.
Compared with the prior art, the invention has the advantages that: aiming at the situation that a substation is not provided with a spare power automatic switching device in a power supply system, if the spare power automatic switching device cannot be installed due to the fact that the configuration of an early-stage protection function is incomplete or the spare power automatic switching device cannot be installed due to the limitation of the installation space of a switch cabinet, the spare power automatic switching function of the substation without the spare power automatic switching device can be realized under the situation that a secondary cable and the spare power automatic switching device are not required to be added, and the influence of the transformation cost and the field transformation on the operated protection device is reduced.
Drawings
Fig. 1 is a schematic diagram of a distributed backup power automatic switching system applied to a power supply system;
fig. 2 is a schematic flow chart of an implementation of a distributed backup power automatic switching system;
fig. 3 is a schematic diagram of a distributed backup power automatic switching system applied to a fault position of a power supply system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a distributed spare power automatic switching system and a control method thereof, aiming at the condition that a substation in a power supply system is not provided with a spare power automatic switching device, for example, the substation is not provided with the spare power automatic switching device due to the incomplete configuration of an early-stage protection function or the spare power automatic switching device cannot be installed due to the limitation of the installation space of a switch cabinet, but the spare power automatic switching function needs to be realized, the spare power automatic switching function of the substation without the spare power automatic switching device can be realized under the condition that a secondary cable and the spare power automatic switching device do not need to be added, and the influence of the transformation cost and the field transformation on the operated protection device is reduced.
Referring to fig. 1 and 3, a main body of a distributed automatic backup power switching system according to an embodiment of the present invention includes two main transformer protection devices respectively disposed on two main transformers and a segment protection device disposed on a segment.
The main transformer protection device comprises a main transformer acquisition module for acquiring bus voltage, a low-level current analog quantity and a main transformer switch position state corresponding to a main transformer, a signal conversion module for converting the acquired bus voltage, the low-level current analog quantity and the main transformer switch position state into a GOOSE state switch quantity, a main transformer information interaction module for performing information interaction outwards, and a main transformer execution module for controlling a main transformer switch; the main transformer information interaction module is connected with the main transformer execution module.
The section protection device comprises a spare power automatic switching logic judgment module for storing a system operation mode, executing charge and discharge judgment logic, fault judgment logic, isolation fault logic and closing recovery power supply logic, a section acquisition module for acquiring the position state of a section switch, a section execution module for controlling the section switch and a section information interaction module for performing information interaction outwards. The spare power automatic switching logic judgment module is a single chip microcomputer and receives the position state of the section switch and carries out logic judgment by combining the GOOSE state switching value. The subsection acquisition module is connected with the spare power automatic switching logic judgment module, the spare power automatic switching logic judgment module is connected with the subsection information interaction module and the subsection execution module, and the subsection information interaction module carries out information interaction with the main transformer information interaction module.
And the main transformer information interaction module and the subsection information interaction module carry out real-time information interaction through a station control layer network of the transformer substation.
The invention provides a distributed spare power automatic switching system, which comprises the following steps:
1) the bus voltage, the low-current analog quantity and the main transformer switch position state collected by the main transformer protection device are converted into a GOOSE state switching value, and the GOOSE state switching value is sent to the subsection protection device;
2) the sectional protection device collects the position state of a sectional switch;
3) the sectional protection device determines the system operation mode according to the received GOOSE state switching quantity and the collected sectional switch position state sent by the main transformer protection device through the stored system operation mode, the execution charge-discharge judgment logic, the fault judgment logic, the isolation fault logic and the closing recovery power supply logic,
when the system runs normally and meets the spare power automatic switching charging condition, after charging delay, the sectional protection device transmits a signal to external LED equipment through the sectional information interaction module, and an automatic switching charging completion mark is displayed on the LED equipment;
when a system fails to cause the power failure of a bus, a spare power automatic switching logic judgment module of the sectional protection device carries out starting logic judgment according to the received GOOSE state switching value, the spare power automatic switching logic judgment module of the sectional protection device determines a fault range according to the received GOOSE state switching value, a GOOSE tripping command is sent to a main transformer protection device to execute a main transformer switch tripping outlet, the fault is isolated, the spare power automatic switching logic of the sectional protection device receives the GOOSE state switching value again, after the judgment module judges the fault isolation, a closing command is executed, the sectional switch is closed, and the power supply of the power failure bus is recovered.
The single bus-section main wiring is taken as an example and is shown in reference to fig. 1. The implementation flow of the distributed backup power automatic switching system is shown in fig. 2.
In fig. 1, the two main transformers are a #1 main transformer and a #2 main transformer respectively. In normal operation, a #1 main transformer runs with a bus I, a #2 main transformer runs with a bus II, and a section switch B1 is positioned in a branch position and used as a hot standby switch. B1 is given as a hot standby switch by way of example only, and a T1 switch of the #1 main transformer or a T2 switch of the #2 main transformer may be selected as the hot standby switch.
In fig. 1, a #1 main transformer and a #2 main transformer are respectively provided with a main transformer protection device, a segment protection device is configured in a segmented manner, and a backup automatic switching logic judgment module is integrated in the segment protection device. The main transformer protection device and the subsection protection device exchange state information in real time through a station control layer communication network.
The main transformer protection device 1 converts the acquired I mother voltage analog quantity into I mother voltage GOOSE state switching quantity, converts the acquired T1 current analog quantity into T1 current GOOSE state switching quantity, and sends the T1 current GOOSE state switching quantity and the T1 switch position GOOSE state switching quantity to the segment protection device through a station control layer communication network.
The main transformer protection device 2 converts the collected II mother voltage analog quantity into II mother voltage GOOSE state switching quantity, converts the collected T2 current analog quantity into T2 current GOOSE state switching quantity, and sends the switching quantity and the T2 switch position GOOSE state switching quantity to the segment protection device through the station control layer communication network.
After the section protection device receives the GOOSE state switching value sent by the main transformer protection device 1 and the main transformer protection device 2, the spare power automatic switching logic judgment module comprehensively collects the position state of the section switch to carry out system operation mode, execution charging and discharging judgment logic, fault judgment logic, isolation fault logic and closing recovery power supply logic judgment, and transmits a command of switching on or switching off the switch to the main transformer protection device through the section information interaction module. The bus is free of voltage and becomes low and free of current, and the main transformer fault or the upper power supply fault is indicated.
The main transformer protection device 1 receives and executes a command of tripping or closing a T1 switch sent by a spare power automatic switching logic judgment module in the sectional protection device.
The main transformer protection device 2 receives and executes a command of tripping or closing the T2 switch sent by the spare power automatic switching logic judgment module in the sectional protection device.
The following describes the technical solution of the present invention with reference to fig. 3 and the specific embodiment:
after a #1 main transformer has a fault, namely a point K1 in fig. 3 has a fault, a point I bus is subjected to voltage loss, a main transformer protection device 1 sends a point I bus voltage, a point T1 current and a point T1 on-position GOOSE state switching value to a subsection protection device, the subsection protection device judges that the main transformer 1 has a fault according to a spare power automatic switching fault judgment logic after receiving the GOOSE state switching value sent by the main transformer protection device, sends a GOOSE tripping command of a point T1 to the main transformer protection device 1 to trip a point T1 switch, after the point T1 switch is tripped, the main transformer protection device 1 sends a GOOSE state switching value of a point T1 switch to the subsection protection device, and after a spare power automatic switching logic judgment module in the subsection protection device receives the GOOSE state of the point T1 switch, the fault is confirmed to be isolated, a subsection B1 switch is restarted, and the point I bus power supply.
After a #2 main transformer has a fault, namely a point K2 in fig. 3 has a fault, a point II bus is subjected to voltage loss, the main transformer protection device 2 sends a point II bus voltage, a point T2 current and a point T2 switch-on GOOSE state switching value to the subsection protection device, after the subsection protection device receives the GOOSE state switching value sent by the main transformer protection device, the main transformer 2 is judged to have a fault according to the spare power automatic switching fault judgment logic, a GOOSE tripping command of the point T2 is sent to the main transformer protection device to trip the T2 switch, after the T2 switch is tripped, the main transformer protection device 2 sends a GOOSE state switching value of the point T2 switch to the subsection protection device, and after a spare power automatic switching logic judgment module in the subsection protection device receives the GOOSE state of the point T2 switch, the fault is confirmed to be isolated, the subsection B1 switch is again switched on, and the power supply of.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1.一种分散式备自投系统，其特征在于：1. A decentralized system for self-injection is characterized in that: 包括配置于各主变的主变保护装置和配置于分段的分段保护装置；Including the main transformer protection device configured in each main transformer and the segment protection device configured in the subsection; 所述主变保护装置采集对应主变的母线电压、变低电流模拟量和主变开关位置状态，将采集的母线电压、变低电流模拟量和主变开关位置状态转换成GOOSE状态开关量，并与分段保护装置进行信息交互，向分段保护装置传送GOOSE状态开关量，且通过从分段保护装置获取的交互信息对主变开关进行控制；The main transformer protection device collects the bus voltage corresponding to the main transformer, the analog value of the low current and the position state of the switch of the main transformer, and converts the collected bus voltage, the analog value of the low current and the position state of the switch of the main transformer into the switch value of the GOOSE state, And carry out information exchange with the segment protection device, transmit the GOOSE state switch to the segment protection device, and control the main transformer switch through the interaction information obtained from the segment protection device; 所述分段保护装置与主变保护装置进行信息交互，并采集分段开关位置状态，分段保护装置包括存储有系统运行方式、执行充放电判断逻辑、故障判断逻辑、隔离故障逻辑和合闸恢复供电逻辑的备自投逻辑判断模块，所述备自投逻辑判断模块接收分段开关位置状态并结合GOOSE状态开关量进行逻辑判断，将逻辑判断结果传送给主变保护装置，并根据逻辑判断结果对分段开关进行控制。The sectional protection device exchanges information with the main transformer protection device, and collects the position status of the sectional switch. The sectional protection device includes storage system operation mode, execution charge and discharge judgment logic, fault judgment logic, isolation fault logic and closing recovery. The standby self-switching logic judgment module of the power supply logic, the standby self-switching logic judgment module receives the position state of the segment switch and makes a logical judgment in combination with the GOOSE state switch value, and transmits the logical judgment result to the main transformer protection device, and according to the logical judgment result Control the segment switch. 2.根据权利要求1所述的一种分散式备自投系统，其特征在于：所述主变保护装置包括采集对应主变的母线电压、变低电流模拟量和和主变开关位置状态的主变采集模块，将采集的母线电压、变低电流模拟量和主变开关位置状态转换成GOOSE状态开关量的信号转化模块，向外进行信息交互的主变信息交互模块，对主变开关进行控制的主变执行模块；2. A decentralized backup auto-switching system according to claim 1, characterized in that: the main transformer protection device comprises a device for collecting the bus voltage corresponding to the main transformer, the analog quantity of the transformer low current and the position state of the main transformer switch. The main transformer acquisition module is a signal conversion module that converts the collected bus voltage, low-current analog quantity and the main transformer switch position state into GOOSE state switch value, and the main transformer information exchange module that exchanges information externally. Controlled main transformer execution module; 所述主变采集模块和信号转化模块连接，所述信号转化模块与主变信息交互模块连接，所述主变信息交互模块与主变执行模块连接。The main transformer acquisition module is connected with the signal conversion module, the signal conversion module is connected with the main transformer information exchange module, and the main transformer information exchange module is connected with the main transformer execution module. 3.根据权利要求2所述的一种分散式备自投系统，其特征在于：所述分段保护装置还包括采集分段开关位置状态的分段采集模块、对分段开关进行控制的分段执行模块，向外进行信息交互的分段信息交互模块；3 . A decentralized backup auto-throwing system according to claim 2 , wherein the segmented protection device further comprises a segmented acquisition module for collecting the position state of the segmented switch, and a segmented acquisition module for controlling the segmented switch. 4 . The segment execution module is a segmented information exchange module for external information exchange; 所述分段采集模块与备自投逻辑判断模块连接，所述备自投逻辑判断模块与分段信息交互模块和分段执行模块连接，所述分段信息交互模块与主变信息交互模块进行信息交互。The segment acquisition module is connected with the standby self-transition logic judgment module, the standby self-transition logic judgment module is connected with the segment information exchange module and the segment execution module, and the segment information exchange module is connected with the main transformer information exchange module. Information exchange. 4.根据权利要求3所述的一种分散式备自投系统，其特征在于：所述主变信息交互模块和分段信息交互模块通过通信网络进行实时信息交互。4 . The distributed backup auto-throwing system according to claim 3 , wherein the main transformer information exchange module and the segment information exchange module conduct real-time information exchange through a communication network. 5 . 5.根据权利要求4所述的一种分散式备自投系统，其特征在于：所述的通信网络为变电站的站控层网络。5 . The distributed backup auto-switching system according to claim 4 , wherein the communication network is a station control layer network of a substation. 6 . 6.根据权利要求1~5任一项所述的一种分散式备自投系统的控制方法，其特征在于，包括以下步骤：6. according to the control method of a kind of decentralized self-injection system described in any one of claim 1～5, it is characterized in that, comprise the following steps: 1）主变保护装置采集的母线电压、变低电流模拟量和主变开关位置状态并转换成GOOSE状态开关量，将所述GOOSE状态开关量发送到分段保护装置；1) The bus voltage, low-voltage current analog quantity and main transformer switch position state collected by the main transformer protection device are converted into GOOSE state switch quantity, and the GOOSE state switch quantity is sent to the segment protection device; 2）分段保护装置采集分段开关位置状态；2) The sectional protection device collects the position status of the sectional switch; 3）分段保护装置根据接收到的主变保护装置发送的所述GOOSE状态开关量、采集的分段开关位置状态，通过存储的系统运行方式、执行充放电判断逻辑、故障判断逻辑、隔离故障逻辑和合闸恢复供电逻辑，确定系统运行方式，3) According to the received GOOSE state switch value sent by the main transformer protection device and the collected position state of the segment switch, the segment protection device executes the charging and discharging judgment logic, fault judgment logic, and isolates the fault through the stored system operation mode. Logic and closing restore power supply logic, determine the system operation mode, 当系统发生故障导致母线失电后，分段保护装置的备自投逻辑判断模块根据接收到的GOOSE状态开关量进行启动逻辑判别，分段保护装置的备自投逻辑判断模块根据接收到的GOOSE状态开关量，确定故障范围，发送GOOSE跳闸命令到主变保护装置执行主变开关跳闸出口，隔离故障，分段保护装置的备自投逻辑判断模块判断故障隔离后，执行合闸命令，合上分段开关，恢复失电母线的供电。When the system fails and causes the bus to lose power, the standby self-switching logic judgment module of the sectional protection device performs the startup logic judgment according to the received GOOSE state switch value, and the standby self-switching logic judgment module of the sectional protection device based on the received GOOSE Status switch value, determine the fault range, send the GOOSE trip command to the main transformer protection device to execute the main transformer switch tripping outlet, isolate the fault, and the standby self-switching logic judgment module of the sectional protection device judges the fault isolation, executes the closing command, and closes the Sectional switch to restore power supply to the lost bus.
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