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Prevention and control method of power safety accident risk caused by load shedding

A technology of electric power safety and accident risk, applied in the direction of power network operating system integration, electric digital data processing, AC network voltage adjustment, etc., can solve the problems of reducing system risk, unfavorable, not getting enough attention, etc., to reduce system risk , reduce the amount of configuration, and optimize the risk cost

Active Publication Date: 2014-02-12
CHINA ELECTRIC POWER RES INST +1
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  • Description
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Problems solved by technology

However, the risk assessment for the stability control system, especially the risk assessment and prevention and control technology research caused by the stability control load shedding has not received enough attention, which is not conducive to reducing system risk

Method used

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  • Prevention and control method of power safety accident risk caused by load shedding
  • Prevention and control method of power safety accident risk caused by load shedding
  • Prevention and control method of power safety accident risk caused by load shedding

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] Such as figure 1 , a method for preventing and controlling the risk of electric safety accidents caused by load shedding, the method for preventing and controlling comprises the following steps:

[0031] Step 1: Determine the control parameters of the load shedding stability control system;

[0032] Step 2: Generate the real-time operation mode of the power grid, and check and assess the action status of the stability control system under fault conditions;

[0033] Step 3: Calculate the power safety accident level, emergency control risk cost and preventive control cost caused by load shedding of the stability control system;

[0034] Step 4: Determine whether the emergency control risk cost is greater than or equal to the preventive control cost, if so, search and execute risk countermeasures and return to step 2, otherwise directly return to step 2...

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Abstract

The invention provides a prevention and control method of a power safety accident risk caused by load shedding, comprising the following steps of: determining a control parameter of a load shedding stable control system; generating a real-time operation manner of a power grid, and checking and examining a movement state of the stable control system under faults; calculating a power safety accident grade, an emergency control risk cost and a prevention and control cost which are caused by the load shedding of the stable control system; judging whether the emergency control risk cost is more than or equal to the prevention and control cost; if so, searching and executing a risk counter measure and returning to the step 2; otherwise, directly returning to the step 2 to continue to execute the step 2. The prevention and control method disclosed by the invention can comprehensively evaluate the risk cost caused by the load shedding of the stable control system and can be used for preventing and controlling the power safety accident risk caused by the load shedding in a power system, so that the risk tracking caused by the load shedding of the system can be realized, the risk alarm is given out and the risk of the system is reduced by responding the risk.

Description

technical field [0001] The invention belongs to the field of power systems and automation, and in particular relates to a method for preventing and controlling the risk of electric safety accidents caused by load shedding. Background technique [0002] According to the provisions of DL / T723-2000 "Technical Guidelines for Power System Safety and Stability Control", in order to ensure the safety of the power system when it is subjected to the second type of large disturbance, the emergency control to prevent stability damage and serious parameters exceeding the limit is realized to ensure the safety of the power system. A safe and stable second line of defense. The stability control system is used to implement emergency control. It allows the operation outside the stability domain before failure without increasing the normal operation cost of the system, and improves the transmission capacity, which has been widely used. The load shedding stability control system is an import...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/14G06F19/00
CPCY02B70/3225Y04S20/222
Inventor 刘福锁李威方勇杰薛峰孙斌马覃峰
Owner CHINA ELECTRIC POWER RES INST
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