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Application data switching method and system for area protection control system

A technology for area protection control and application data, applied in the field of power systems, can solve the problems of high probability of area protection misoperation and low reliability of area protection control systems

Active Publication Date: 2016-08-31
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

[0004] Based on this, it is necessary to address the problem that in the area protection control system in the prior art, when the information in the system is not synchronized, the probability of area control and area protection misoperation is high, resulting in low reliability of the area protection control system, and to provide a Application data switching method and system of an area protection control system

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  • Application data switching method and system for area protection control system
  • Application data switching method and system for area protection control system
  • Application data switching method and system for area protection control system

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Embodiment Construction

[0019] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0020] In one example, see figure 1 As shown, a method for switching application data of an area protection control system, the method includes the following steps:

[0021] S100 receives the network sampling data required by the regional sub-stations in the regional protection control system from the regional network, obtains the sampling data based on satellite timing and the sampling data based on network timing, and the network sampling data is marked with the absolute time scale and the corresponding local satellite timing The absolute time scale of the network master clock for uniform time service by the regional network master clock.

[0022] In this embodiment, the regional protection control system includes a plurality of regional sub-stations, and the regional sub-stations are connected through a regiona...

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Abstract

The invention relates to an application data switching method and system for an area protection control system. The method and the system are used for obtaining sampling data based on satellite time service and sampling data based on network time service on the basis of double time scales carried in network sampling data, namely a corresponding absolute satellite time scale of local satellite time service and a network main clock absolute time scale of area network main clock uniform time service, carrying out real-time synchronous verification on the sampling data based on satellite time service and sampling data based on network time service, generating data abnormality alarm information according to a real-time synchronous verification result, switching the sampling data that is used for calculating the application data for differential protection of an area substation according to the data abnormality alarm information, identifying abnormal network sampling data when discovering that synchronization abnormality of the sampling data that is used for calculating the application data of the area substation, and seamlessly switching the abnormal network sampling data for calculating the application data to the normal sampling data, so as to ensure the accuracy of the differential protection of the area substation.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to an application data switching method and system of an area protection control system. Background technique [0002] The protection devices in the power system are interconnected through optical fibers to realize information sharing and obtain multi-point information in the system. According to the network topology, use the obtained information to quickly, reliably and accurately remove faults, and analyze the safety of the system after the fault points are removed. The influence brought by the stable operation and adopt corresponding control strategies to ensure the safe operation of the power grid. This system integrating protection and automatic control functions is called the regional protection control system. [0003] Area protection mainly protects and controls the connection lines between substations, comprehensively analyzes information and makes correspond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00G04R20/02
CPCG04R20/02H04L7/0075
Inventor 刘世丹袁亮荣陈桥平梁博谭乾曾耿晖陈志光张华年李继晟杨卉卉桂华
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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