Wide area protection fault recording method for electric power system
A technology of fault recording and wide-area protection, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve problems such as high requirements for processing chips, achieve improved overall load handling capacity, strong scalability, and reduce processing load effect
Active Publication Date: 2013-10-30
STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY +2
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Problems solved by technology
For wide-area protection fault recording, there are mainly the following differences: 1. Compared with traditional protection fault recording, wide-area protection fault recording processes network message data; 2. Wide-area protection fault recording The processing is multi-interval and large-scale data, which has high requirements for processing chips
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[0019] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.
[0020] A wide-area protection fault recording method includes the steps of using a merging unit and an intelligent control unit as experimental sources to form a fault recording file conforming to the COMTRADE format.
[0021] The innovation of this wave recording method is that it also includes the following steps:
[0022] ⑴. Connect the merging unit and intelligent control unit to the port of the process layer switch through the optical fiber port;
[0023] ⑵. The process layer switch is connected to the optical fiber ports of multiple input and output processing modules of the wide-area intelligent control host through multi-mode optical fibers;
[0024] ⑶. Multiple input and output processing modules decode the received IEC-61850-9-2 m...
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The invention discloses a wide area protection fault recording method. Merging units and intelligent control units are used as network message data sources. According to fault recording processing, a plurality of networking input / output processing modules of a wide area intelligent control host of an electric power system are used as processing units for network massage data, and decode IEC61850-9-2 messages sent by different merging units and GOOSE messages sent by the intelligent control units to obtain sampling points and switching value information based on SmpCnt synchronization method, and send the sampling points and switching value information to a communication processing module, and fault recording files in a COMTRADE format are formed. The merging units and the intelligent control units are connected to a port of a process layer exchanger through fiber ports; and the process layer exchanger is connected to fiber ports of the input / output processing modules of the wide area intelligent control host. Distributed processing is adopted, the fault recording files are accurately and truly formed, and the method has high universality and expansibility, and can adapt to power grids with different network structures.
Description
technical field [0001] The invention belongs to the field of relay protection monitoring in electric power systems, in particular to a wave recording method for wide-area protection faults in electric power systems. Background technique [0002] The traditional idea of three lines of defense is an important contribution of Chinese power workers to power technology, which ensures the long-term safe and stable operation of my country's relatively weak power grid. The reason for adopting three relatively independent lines of defense to ensure the safe and stable operation of a unified large-scale power grid is mainly limited by the level of communication and hardware. On the one hand, the traditional power grid control system adopts a decentralized and relatively independent control mode, which has a certain impact on the control performance, so it needs to be compensated by more complex protection and control principles; on the other hand, due to most Using the traditional ...
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IPC IPC(8): G01R31/00
Inventor 刘志富田伟张海彬王伟
Owner STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY