Online emergency control decision-making method considering transient state and static state security and stability constraint
A static safety and emergency control technology, applied in emergency treatment of AC circuit layout, AC network circuit, electrical components, etc., can solve problems such as complex safety and stability characteristics, wide influence of safety and stability problems, and interweaving of safety and stability problems.
Active Publication Date: 2016-11-09
NARI TECH CO LTD +4
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[0007] The purpose of the present invention is: in view of the variable operating state of the AC-DC hybrid large power grid (including asynchronously networked large power grid), complex security and stability characteristics, intertwining of multiple types of security and stability problems, and wide impact of security and stability problems, it is urgent to adopt an online control mode to To support the actual needs of t
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[0121] The present invention will be described in further detail below with reference to the accompanying drawings.
[0122] figure 1 Step 1: According to the control strategy model of the security control system, as well as the pressure plate status, fixed value and measured information of the security control system, generate a controllable measure set CC corresponding to the expected failure that the security control system defends, and predict the failure The online emergency control measure set OC considering transient and static security and stability constraints is set as an empty set, the control measure combination increment set CA to be checked is set to an empty set, and the control measure combination set CB to be checked is set to For collections that do not need to take control measures, go to step 2;
[0123] The controllable measures include controllable equipment, control direction and control amount; for example, for the same DC system that can be divided in...
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The invention discloses an online emergency control decision-making method considering transient state and static state security and stability constraint, and belongs to the security and stability emergency control technical field of the electric power system. For overcoming the problems that multiple kinds of problems exiting in the security and stability of the large power grid are mingled, and the online decision-making time is short, different types of control measures are chosen specific to different kinds of problems exiting in security and stability; the control measures of each type are screened based on the control performance indexes separately; the screened measures of different controllable equipment are enumerated and combined; the enumerated and combined measures are screened through the power sensitivity based overload security verification and power frequency characteristic based transient state frequency security verification; and finally, the screened enumerated and combined measures are subjected to transient state and static state security and stability quantitative evaluation by adopting a cluster computing mode. The calculation strategies are classified and sequenced specific to the problems exiting in security and stability, so that the rapid and optimized decision making of the online emergency control considering the transient state and static state security and stability constraint is realized.
Description
technical field [0001] The invention belongs to the technical field of safety and stability emergency control of electric power system. More precisely, the invention relates to a method for optimizing decision-making of large power grid online emergency control considering transient state and static safety and stability constraints. Background technique [0002] The operation status of the large power grid is changeable, the safety and stability characteristics are complex, and multiple types of safety and stability problems are intertwined. It is difficult to design a control strategy that can ensure the safety and stability of the power grid without considering the control cost. It is urgent to adopt the online control mode to improve the pertinence of the control strategy, ensure the safety and stability of the power grid operation, and effectively reduce the control cost. [0003] The calculation speed of control decision-making is one of the key indicators of whether on...
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CPCH02J1/00H02J3/00H02J3/001H02J2203/20
Inventor 徐泰山任先成鲍颜红许涛刘天斌罗建裕张剑云徐友平李海峰张金龙
Owner NARI TECH CO LTD
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