A SCD precise decoupling method for single device replacement

Abstract

The present invention proposes an SCD precise decoupling method for single device replacement, comprising the following steps: step S1, obtaining the SCD and SPCD files of the substation, and the SCD information and SPCD information of the replaced device; step S2, constructing a physical link network topology centered on the replaced device Unit, and forming a set R of device Units that are 1 Cable away from the replaced device; step S3, establishing a mapping relationship between the IED in the SCD and the Unit in the SPCD, and obtaining an IED set M mapped in the SCD file by the set R; step S4, decoupling with the IED set M in the SCD file as a decoupling boundary, and obtaining a related device configuration file RCD and a non-related device configuration file URCD; step S5, returning the decoupled RCD file to the construction party, and the URCD file is locked and prohibited from being modified; step S6, the construction party modifies, debugs and verifies the RCD file; step S7, taking the set M as the boundary, merging the URCD file with the debugged and verified RCD file to obtain a new SCD; the present invention can reduce the risk of changes caused by SCD modification.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid operation and maintenance, and in particular to a SCD precise decoupling method for single device replacement. Background Art

[0002] During the renovation and expansion of smart substations, it is difficult to accurately define the impact range of SCD file upgrades. To ensure reliability, the debugging scope is often increased. The SCD file of the entire station needs to be modified when expanding one bay or even replacing one device. After each modification of the SCD file, all configuration information contained in the SCD needs to be re-verified, which greatly increases the workload of smart substation debugging and operation and maintenance.

[0003] In recent years, a method has emerged that decouples the SCD file to generate sub-files. When performing renovation and expansion projects, only the sub-files are modified in a targeted manner instead of modifying the entire SCD file. This helps reduce the scope of modification and re-verification of the SCD file during the renovation and expansion phase, and reduces the risk of changes caused by SCD modifications during the renovation and expansion phase.

[0004] At present, in the related research on SCD file decoupling, the main decoupling methods can be divided into three categories: by business direction, by interval method, and by primary and secondary equipment topology relationship.

[0005] (1) The solution for decoupling by business direction is to decouple the SCD file according to protection business configuration, measurement and control business configuration, metering business configuration, detection business configuration, security business configuration and public configuration.

[0006] (2) The solution of decoupling by interval is: decouple the SCD file into only two BCD files. The first BCD file contains all the intervals involved in the current operation, which is called the "related interval BCD" file; the second BCD file contains all the intervals not involved, which is called the "irrelevant interval BCD" file. The above two BCD files are completely decoupled.

[0007] (3) The solution based on the topological relationship between primary and secondary devices: The topological configuration relationship between the primary and secondary systems is referred to in the decoupling method based on the topological relationship between the primary and secondary devices.

[0008] However, the above three technical solutions all have obvious disadvantages, as follows:

[0009] (1) Decoupling for business direction is applicable to the replacement of all equipment in the entire business chain, but this situation is basically not encountered in the renovation and expansion of on-site substations. For interval expansion or single equipment replacement, this decoupling solution is obviously not applicable.

[0010] (2) Decoupling by interval is suitable for the case of interval expansion. However, for the most common single equipment replacement in substation operation and maintenance work, the decoupling scope of this solution includes all equipment in the interval in the modification scope, which significantly expands the scope of modification and re-verification of SCD files actually involved in the work.

[0011] (3) There is no specific technical solution for replacing a single device in the secondary system of a smart substation according to the topological relationship structure of the primary and secondary devices. This method still remains at the logical relationship level for decoupling, and its application scope is limited. There is no effective response measure for replacing collection and aggregation devices such as switches, fault recording acquisition units, or network analyzer acquisition units. Summary of the invention

[0012] The present invention proposes an SCD precise decoupling method for single device replacement, which can minimize the scope of modification and re-verification of SCD files and reduce the risk of modification caused by SCD modification.

[0013] The present invention adopts the following technical solutions.

[0014] An SCD precise decoupling method for single device replacement is used for single device replacement operations in smart substations, comprising the following steps;

[0015] Step S1, obtaining the SCD and SPCD files of the substation, and the SCD information and SPCD information of the replacement equipment;

[0016] Step S2: Based on the SPCD file, a physical link network topology centered on the replaced device Unit is constructed, and the device Units that are 1 Cable away from the replaced device form a set R;

[0017] Step S3, establish a mapping relationship between the IED in the SCD and the Unit in the SPCD, and obtain the IED set M mapped by the set R in the SCD file;

[0018] Step S4, decoupling is performed using the IED set M in the SCD file as a decoupling boundary to obtain a related device configuration file RCD and a non-related device configuration file URCD;

[0019] Step S5: Return the decoupled RCD file to the construction party, and lock the URCD file to prohibit modification;

[0020] Step S6: The construction party modifies, debugs and verifies the received RCD file;

[0021] Step S7: With set M as the boundary, merge the URCD file with the RCD file debugged and verified by the construction party to obtain a new SCD file, and the process ends.

[0022] The construction party mentioned above is the unit responsible for the equipment replacement work.

[0023] In step S6, the construction party modifies, debugs and verifies the received RCD file through the configuration tool.

[0024] In step S5, the URCD file is stored in the file decoupling system and is locked to prohibit modification.

[0025] In the step S3, by establishing a mapping relationship between the IED in the SCD and the Unit in the SPCD, the decoupling of the SCD in step S4 is refined from the logical structure to the physical link level to improve the accuracy of the decoupling.

[0026] The SPCD file is a substation physical configuration description file.

[0027] The SCD information of the replacement device includes VoltageLevel, Bay, LNode, LDevice, and IED; the SPCD information of the replacement device includes Substation, Region, Bay, Unit, Cubicle, Cable, Core, and Intcore.

[0028] The solution of the present invention makes the SCD decoupling work more refined and can adapt to various expansion and technical transformation work conditions of substations. The decoupling of SCD is refined from the logical structure to the physical link level, and the SCD decoupling range is accurately determined to minimize the modification and re-verification scope of the SCD file to the greatest extent, reducing the risk of changes caused by SCD modification. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0030] Attached Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0031] As shown in the figure, an SCD precise decoupling method for single device replacement is used for single device replacement operation of smart substation, including the following steps;

[0032] Step S1, obtaining the SCD and SPCD files of the substation, and the SCD information and SPCD information of the replacement equipment;

[0033] Step S2: Based on the SPCD file, a physical link network topology centered on the replaced device Unit is constructed, and the device Units that are 1 Cable away from the replaced device form a set R;

[0034] Step S3, establish a mapping relationship between the IED in the SCD and the Unit in the SPCD, and obtain the IED set M mapped by the set R in the SCD file;

[0035] Step S4, decoupling is performed using the IED set M in the SCD file as a decoupling boundary to obtain a related device configuration file RCD and a non-related device configuration file URCD;

[0036] Step S5: Return the decoupled RCD file to the construction party, and lock the URCD file to prohibit modification;

[0037] Step S6: The construction party modifies, debugs and verifies the received RCD file;

[0038] Step S7: With set M as the boundary, merge the URCD file with the RCD file debugged and verified by the construction party to obtain a new SCD file, and the process ends.

[0039] The construction party mentioned above is the unit responsible for the equipment replacement work.

[0040] In step S6, the construction party modifies, debugs and verifies the received RCD file through the configuration tool.

[0041] In step S5, the URCD file is stored in the file decoupling system and is locked to prohibit modification.

[0042] In the step S3, by establishing a mapping relationship between the IED in the SCD and the Unit in the SPCD, the decoupling of the SCD in step S4 is refined from the logical structure to the physical link level to improve the accuracy of the decoupling.

[0043] The SPCD file is a substation physical configuration description file.

[0044] The SCD information of the replacement device includes VoltageLevel, Bay, LNode, LDevice, and IED; the SPCD information of the replacement device includes Substation, Region, Bay, Unit, Cubicle, Cable, Core, and Intcore.

Claims

1. A SCD precise decoupling method for single device replacement, used for single device replacement operations in smart substations, characterized by: The steps include: Step S1, obtaining the SCD and SPCD files of the substation, and the SCD information and SPCD information of the replacement equipment; Step S2: Based on the SPCD file, a physical link network topology centered on the replaced device Unit is constructed, and the device Units that are 1 Cable away from the replaced device form a set R; Step S3, establish a mapping relationship between the IED in the SCD and the Unit in the SPCD, and obtain the IED set M mapped by the set R in the SCD file; Step S4, decoupling is performed using the IED set M in the SCD file as a decoupling boundary to obtain a related device configuration file RCD and a non-related device configuration file URCD; Step S5: Return the decoupled RCD file to the construction party, and lock the URCD file to prohibit modification; Step S6: The construction party modifies, debugs and verifies the received RCD file; Step S7: Taking set M as the boundary, merge the URCD file with the RCD file debugged and verified by the construction party to obtain a new SCD file; The SPCD file is a substation physical configuration description file; The SCD information of the replacement device includes VoltageLevel, Bay, LNode, LDevice, and IED; the SPCD information of the replacement device includes Substation, Region, Bay, Unit, Cubicle, Cable, Core, and Intcore.

2. According to claim 1, a SCD precise decoupling method for single device replacement is characterized in that: The construction party mentioned above is the unit responsible for the equipment replacement work.

3. According to claim 1, a SCD precise decoupling method for single device replacement is characterized in that: In step S6, the construction party modifies, debugs and verifies the received RCD file through the configuration tool.

4. The SCD precise decoupling method for single device replacement according to claim 1, characterized in that: In step S5, the URCD file is stored in the file decoupling system and is locked to prohibit modification.

5. According to claim 1, the SCD precise decoupling method for single device replacement is characterized in that: In the step S3, by establishing a mapping relationship between the IED in the SCD and the Unit in the SPCD, the decoupling of the SCD in step S4 is refined from the logical structure to the physical link level to improve the accuracy of the decoupling.

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