CN106411747A - Switch message forwarding method and system for intelligent substation - Google Patents

Abstract

The invention provides a switch message forwarding method and system for an intelligent substation. The method comprises the following steps: (1) counting the number and categories of intelligent devices in the intelligent substation; (2) defining names of the intelligent devices; (3) customizing a forwarding table; and (4) checking the forwarding table. According to the switch message forwarding method and system provided by the invention, unified check is performed on the intelligent devices in the intelligent substation at present, thereby improving the integrity and accuracy of the check and being conducive to post-maintenance.

Description

A method and system for message forwarding applied to switches in smart substations

technical field

The invention relates to a message forwarding technology of an exchange, in particular to a method and system for forwarding messages of an exchange in an intelligent substation.

Background technique

At present, companies in various domestic network provinces have carried out pilot projects of smart substations. In the future, under the background of smart grid construction, the rapid development of smart substations is an inevitable trend, and how to improve the commissioning and construction efficiency of smart substations more efficiently is an urgent problem to be solved. In the development process of substations at the present stage, no matter it is a comprehensive substation, a digital substation or an intelligent substation, more changes occur in the transmission of information flow. However, since the principle of relay protection has not changed, the problems encountered by power system technicians are also concentrated in the process of information flow transmission in smart substations.

At present, in smart substations, the information flow division of the relay protection communication network relies on manual division. The fundamental reason is that the application of the switch in the power system is based on the communication method. There is a big difference in the ease of use, especially in the debugging and operation and maintenance stages. Although some user experience can be improved by configuring static multicast or dynamic multicast, these methods have not fundamentally solved the problem of information flow division in relay protection communication networks in smart substations. Operation and maintenance does not provide a convenient method.

Contents of the invention

In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a method and system for message forwarding applied to switches in smart substations. The present invention performs unified verification on the smart devices in the current smart substation to improve the integrity and accuracy of the verification sex, and is conducive to later maintenance.

In order to realize the above-mentioned purpose of the invention, the present invention takes the following technical solutions:

A method for message forwarding applied to an intelligent substation switch, the method comprising the following steps:

(1) Count the number and types of smart devices in the smart substation;

(2) defining the name of the smart device;

(3) Custom forwarding table;

(4) Verify the forwarding table.

Preferably, the step (1) further includes statistically classifying the function control blocks in the smart substation, the function control blocks are a subset of the smart devices, and are used to complete a specific function in the smart substation system Control block information for the function.

Preferably, in the step (2), the definition of the name of the smart device is in the form of English characters, which is case-sensitive, and the definition of the name of the smart device cannot be repeated.

Preferably, said step (3) comprises the steps of:

Step 3-1. Complete the establishment of a custom forwarding table according to the smart device subscription relationship defined in the smart substation configuration file, that is, the SCD file, and the forwarding table includes two entries of a subscriber and a subscribed party;

Step 3-2: Fill the name of the smart device into the forwarding table according to the subscription relationship in the SCD file.

Preferably, said step (4) comprises the steps of:

Step 4-1, performing statistics on the names of the smart devices;

Step 4-2. Whether the name of the smart device conforms to the naming rule, the naming rule is a specific convention specification for naming the name of the smart device, which can reflect the interval information and function of the device in the name of the smart device information, if it matches, go to step 4-3, otherwise, modify the name and jump to step 4-1;

Step 4-3, making statistics on forwarding subscriptions;

Step 4-4. Check whether the descriptions of both subscribers in the forwarding table are correct against the subscription relationship specified in the SCD file. If correct, the verification ends. Otherwise, modify the subscription relationship and jump to step 4-3.

Preferably, a system for message forwarding applied to switches in smart substations, the system includes a sequentially connected smart device classification module, smart device name definition module, custom forwarding table module and forwarding table verification module, the smart The equipment classification module is used to count the number and types of intelligent equipment in the intelligent substation;

The smart device name definition module is used to define the name of the smart device;

The custom forwarding table module is used for customizing the forwarding table;

The forwarding table verification module is used to verify the forwarding table.

Compared with the closest prior art, the technical solution provided by the present invention has the following excellent effects:

The present invention checks the uniformity of the smart devices in the current smart substation, that is, checks the quantity and functional integrity, which can ensure the integrity of the smart devices in the self-defined forwarding table and the rationality of the names, thereby improving the verification efficiency. completeness and accuracy of the test.

The present invention provides content understood by power system personnel to assist in completing the processing of network exchange problems in later maintenance, and is helpful for later maintenance of network exchange.

Description of drawings

Fig. 1 is a flow chart of the present invention applied to the message forwarding method of the smart substation switch,

Fig. 2 is a flow chart of the forwarding table verification step in Fig. 1,

Fig. 3 is a schematic diagram of a message forwarding system for an intelligent substation switch provided by the present invention

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

The present invention provides a switch message forwarding method based on a self-defined forwarding table identified by a smart device name applied to a smart substation, including the following process, as shown in Figure 1:

Step 1. Classification of intelligent equipment: The types of secondary equipment in the intelligent substation are basically determined after the design of the intelligent substation is completed. In this step, after the design of the intelligent substation is completed, it is necessary to count the number and types of equipment in the intelligent substation, such as how many Line protection, how many measurement and control units, etc.

Statistically classify the function control blocks in the smart substation. The function control block refers to the control block information that completes a specific function in the smart substation system. The function control block is a subset of smart devices, that is, the same smart device can contain different function control block.

Step 2, smart device name definition.

In this step, on the basis of the classification and statistics of smart devices completed in the previous step, the names of various smart devices are defined. The names are defined in the form of English characters and are case-sensitive. The description of environmental characteristics is relatively clear. For example, a measurement and control equipment applied to xx line can be defined as xxck, etc. This definition method is completely combined with the business characteristics of the power system, which can popularize the problem and facilitate the identification of power system operation and maintenance personnel with use. The basic principle of this step is that there should be no duplication between definitions of smart device names, that is, one name corresponds to one smart device. If there are multiple control blocks with different purposes in a single smart device, you can further define the purpose of the control block in the name to show the difference.

Among them, the formulation of the naming rules of smart devices needs to be carried out according to the operation requirements of the power system and the understanding of operation and maintenance personnel, so as to ensure that the definition of the generated smart device names meets the requirements of the power system on the one hand, and is easy to understand by operation and maintenance personnel on the other hand.

Step 3. Customize the forwarding table.

After completing the definition of the smart device name, the technician completes the establishment of the custom forwarding table according to the smart device subscription relationship defined in the smart substation configuration file, that is, the SCD file. The forwarding table mainly has two entries, namely, the subscriber and the subscribed party . The technician only needs to fill in the table with the previously defined smart device name according to the subscription relationship in the SCD file.

Step 4. Forwarding table verification:

This step mainly completes the verification of the rationality of the previous steps. There are two main tasks for the verification of rationality. The first item is the rationality of the smart device name and the reflection Check, through this check can ensure the integrity of the smart device in the custom forwarding table and the rationality of the name. The second item is to verify the correctness of the forwarding table, and check whether the descriptions of both parties in the forwarding table are correct by comparing the subscription relationship specified in the SCD file.

As shown in Figure 2, verifying the forwarding table includes the following steps:

Step a, counting the names of the smart devices;

Step b, whether the name of the smart device complies with the naming rules, if so, execute step c, otherwise, modify the name and jump to step a;

The naming rule is a specific convention specification for the naming of smart devices, that is, it is hoped that the name of the smart device will reflect the interval information and functional information to which the device belongs, such as the merging unit of the 110kV Maowen line. The interval information of the equipment is the 110kV Maowen line and the function information is the merging unit to complete the data sampling function.

Step c, making statistics on forwarding subscriptions;

Step d. Check whether the descriptions of both subscribers in the forwarding table are correct against the subscription relationship specified in the SCD file. If correct, the verification ends. Otherwise, modify the subscription relationship and jump to step c.

As shown in Figure 3, a system applied to message forwarding of switches in smart substations, the system includes sequentially connected smart device classification modules, smart device name definition modules, custom forwarding table modules and forwarding table verification modules, The smart device classification module is used to count the number and types of smart devices in the smart substation;

The smart device name definition module is used to define the name of the smart device;

The custom forwarding table module is used for customizing the forwarding table;

The forwarding table verification module is used to verify the forwarding table.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims (6)

1. a kind of method being applied to the forwarding of intelligent substation switch message is it is characterised in that methods described includes following step Suddenly：

(1) count the value volume and range of product of smart machine in intelligent substation；

(2) define the title of described smart machine；

(3) self-defined forward table；

(4) forward table is verified.

2. according to claim 1 method it is characterised in that described step (1) is also included in described intelligent substation Function control block (FCB) carries out statistics and sorts out, and described function control block (FCB) is the subset of described smart machine, in intelligent substation system The control block message of a specific function is completed in system.

3. according to claim 1 method it is characterised in that in described step (2), the described name defining described smart machine Claim in the form of English character, case sensitive, can not duplicate between described smart machine name definition.

4. according to claim 1 method it is characterised in that described step (3) comprises the steps：

Step 3-1, it is the smart machine subscribing relationship defined in SCD file according to described intelligent substation configuration file, complete The foundation of self-defined forward table, described forward table includes subscriber and two entries of subscribed side；

Step 3-2, according to the subscribing relationship in described SCD file, the title of described smart machine is inserted in described forward table.

5. according to claim 1 method it is characterised in that described step (4) comprises the steps：

Step 4-1, described smart machine title is counted；

Whether step 4-2, described smart machine title meet naming rule, and described naming rule is a kind of for smart machine name Claim a kind of specific agreed specifications of name, interval information and the function belonging to this equipment can be embodied in the title of smart machine Information, if meeting, execution step 4-3, otherwise title is modified, and jumps to step 4-1；

Step 4-3, to forward subscription count；

Whether the subscription both sides description that step 4-4, subscribing relationship specified in comparison SCD file verify in forward table is correct, if Correct then verification terminates, and otherwise subscribing relationship is modified, and jumps to step 4-3.

6. a kind of system being applied to the forwarding of intelligent substation switch message is it is characterised in that described system includes phase successively Smart machine classifying module even, smart machine name definition module, self-defined forward table module and forward table correction verification module, institute State smart machine classifying module, for counting the value volume and range of product of smart machine in intelligent substation；

Described smart machine name definition module, for defining the title of described smart machine；

Described self-defined forward table module, for self-defined forward table；

Described forward table correction verification module, for verifying forward table.