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A method for dynamic control of state machine of relay protection equipment in smart substation

An intelligent substation and relay protection technology, applied in electrical components, circuit devices, information technology support systems, etc., can solve the problems of secondary equipment status that does not support online real-time identification, the corresponding relationship cannot be clearly defined, and the classification granularity of the pressure plate is coarse. , to achieve the effect of preventing large-scale power outages in the power grid, considerable economic and social benefits, and preventing damage to primary power equipment

Active Publication Date: 2022-06-17
CHINA SOUTHERN POWER GRID COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The classification granularity of the pressure plate is coarse, and the state judgment is not sensitive or accurate;
[0006] The corresponding relationship between the external associated interval pressure plate and the operating branch cannot be clearly defined. In some operating modes, the status of the secondary equipment does not support online real-time identification, and requires manual identification and confirmation by operation and maintenance personnel

Method used

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  • A method for dynamic control of state machine of relay protection equipment in smart substation
  • A method for dynamic control of state machine of relay protection equipment in smart substation
  • A method for dynamic control of state machine of relay protection equipment in smart substation

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Embodiment 1

[0046] like figure 1 As shown, a state machine dynamic control method for a relay protection device in an intelligent substation of the present invention is performed according to the following steps:

[0047] Step S101 , collect the position information and real-time value of voltage and current of primary equipment switch, isolation switch, and ground switch through the intelligent substation integrated automation system, and calculate the state of the primary interval in combination with the primary topology relationship, which is defined as running, hot standby, and cold standby , maintenance four states;

[0048] Step S102: Extract, classify and integrate all information of various types of relay protection devices in the smart substation according to the needs of state identification of various relay protection devices in the smart substation to form two types of relay protection device normal operation status information and functional pressure plate information. Among...

Embodiment 2

[0058] Step S201: Collect the position information and real-time values ​​of voltage and current of the primary equipment switch, isolation switch, and ground switch through the intelligent substation integrated automation system, and calculate the state of the primary interval in combination with the primary topology relationship, which is defined as running, hot standby, and cold standby. , maintenance four states;

[0059] Step S202: Extract, classify and integrate all information of various types of relay protection devices in the smart substation according to the needs of state identification of various relay protection devices in the smart substation to form two types of relay protection device normal operation status information and function pressure plate information. Among them, the normal operation status of the relay protection device consists of three types of information, namely: ① the device is running; ② the device has no alarm information; ③ the device has no pr...

Embodiment 3

[0070] Step S301: Collect the position information and the real-time value of voltage and current of the primary equipment switch, isolation switch, and ground switch through the intelligent substation integrated automation system, and calculate the state of the primary interval in combination with the primary topology relationship, which is defined as running, hot standby, and cold standby. , maintenance four states;

[0071] Step S302: Extract, classify and integrate all information of various relay protection devices in the smart substation according to the needs of state identification of various relay protection devices in the smart substation to form two types of relay protection device normal operation status information and functional pressure plate information. Among them, the normal operation status of the relay protection device consists of three types of information, namely: ① the device is running; ② the device has no alarm information; ③ the device has no protecti...

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Abstract

The invention discloses a method for dynamically controlling the state machine of relay protection equipment in an intelligent substation, including defining the state sets of various relay protection equipment in the intelligent substation; defining the control direction of the state transition diagram of the relay protection equipment, forming various relay Electrical protection equipment state transition diagram; define the trigger conditions for the state transition of various relay protection equipment in smart substations; dynamically match the current state of each relay protection equipment in smart substations; complete the dynamic detection of trigger conditions for relay protection equipment state transitions; output The status results of the relay protection equipment realize the status identification of the relay protection equipment of the smart substation; the method provided by the invention can dynamically identify the status of the relay protection equipment of the smart substation, and realize the non-corresponding monitoring and maintenance of the primary and secondary equipment operating status of the smart substation Lay the foundation for the application of security checks.

Description

technical field [0001] The invention belongs to the technical field of power system relay protection, in particular to a method for dynamic control of a state machine of relay protection equipment in an intelligent substation. Background technique [0002] In recent years, there have been many accidents in China caused by the incorrect operation of the protection function of the operating equipment, such as the 330kV Qingshuihe substation in Ningxia Power Grid in 2013, the 330kV Yongdeng substation in Gansu Power Grid in 2014. Accidents such as loss of voltage at the 220kV Penglai Substation in Zhoushan, Zhejiang Province were caused by the failure of the relay protection pressure plate to be properly put in or out (the status of the secondary equipment of the relay protection does not correspond to the status of the primary equipment), resulting in the blocking of the protection function at this level, and the fault must be relied on. The upper-level protection is removed, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
CPCY04S10/16
Inventor 丁晓兵张弛徐小俊纪陵黄佳胤兰金波余江周红阳李靖霞徐鹏彭业刘千宽郑茂然高宏慧
Owner CHINA SOUTHERN POWER GRID COMPANY
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