A zero-sum game-based security control method and device for an urban power grid system
A system security and power grid system technology, applied in the field of urban power grid system security control, can solve problems such as affecting the security and stability of urban power grids
Active Publication Date: 2021-08-24
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
These problems have typical characteristics of risk events and seriously affect the security and stability of urban power grids.
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[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0023] figure 1 It is a flowchart of a zero-sum game-based urban power grid system security control method provided by an embodiment of the present invention. like figure 1 As shown, the method includes:
[0024] Step 101, establishing a stochastic hybrid game model of the VSC-HVDC power grid system based on zero-sum game theory, the stochastic...
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Embodiments of the present invention provide a zero-sum game-based security control method and device for an urban power grid system. The method includes: establishing a VSC-HVDC random mixed game model based on zero-sum game theory; using CVaR to describe a risk safety margin, and setting the risk The threshold value constructs the safety risk constraint, and combines the topological constraints and power flow constraints of the system to construct the stable safety domain; the inverse process of the reachability analysis is set as the optimization problem of the safe reachability probability; the dynamic programming method is used to solve the problem that satisfies the maximum safe reachability probability and the stable safety. Optimal control law for domain constraints. In the embodiment of the present invention, based on the zero-sum game theory, considering the randomness of disturbance and fault occurrence, a random hybrid game model of the urban power grid is established; the stable security domain is described by CVaR; based on the evolution of the unstable state of the system, the inverse problem of the system accessibility analysis is solved , obtain the control law that makes the system return from the unsafe area to the safe area with the greatest probability, and realize the stability control of the system.
Description
technical field [0001] The invention relates to the field of computer technology, in particular to a zero-sum game-based security control method and device for an urban power grid system. Background technique [0002] The high-voltage direct current transmission (VSC-HVDC) technology of the voltage source converter has the advantages of high transmission capacity, fully controllable power flow, lower cable power loss, and no short-circuit current limit. Solutions are becoming better and better alternatives to traditional grid control methods. [0003] However, at present, the safe operation of urban power grids based on VSC-HVDC cannot be effectively guaranteed. For example, on the one hand, the problems of traditional urban power grid safety and reliability analysis methods (such as the percentage backup of power generation capacity planning and the N-1 principle of power transmission planning, etc.) and risk quantification of safe areas, etc., which makes it difficult fo...
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IPC IPC(8): G06F17/00G06Q10/06G06Q50/06H02J3/36
CPCG06Q10/0635G06Q50/06H02J3/36H02J2203/20Y02E60/60
Inventor 史运涛柳长安倪晋超王力刘伟川雷振伍董哲刘大千李超
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY