Method and device for preventing and controlling transient stability of power system

A power system, preventive control technology, applied in the direction of circuit devices, electrical components, AC network circuits, etc., can solve difficult problems

Pending Publication Date: 2021-12-28
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Mathematically, the optimal power flow with transient stability constraints is a special kind of optimal control problem, that is, a nonlinear programming problem with constraints of differential algebraic equations, so it is difficult to solve it directly by conventional mathematical optimization methods

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  • Method and device for preventing and controlling transient stability of power system
  • Method and device for preventing and controlling transient stability of power system
  • Method and device for preventing and controlling transient stability of power system

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Embodiment Construction

[0077] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0078] figure 1 It is a schematic flow chart of a power system transient stability prevention control method shown according to an embodiment of the present disclosure.

[0079] Such as figure 1 As shown, the power system transient stability preventive control method may include the following steps:

[0080] In step 1, the initial operating state of the power system is generated.

[0081] In one embodiment, the generating the initial operating state of the power system...

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Abstract

The invention belongs to the technical field of power system stability control, and relates to a method for preventing and controlling the transient stability of a power system based on distributed reinforcement learning. A prevention and control decision problem considering transient stability and operation cost is modeled as a Markov decision process, firstly, d * m initial operation states are generated based on load flow calculation, then an action Actor network and an action value Critic network are trained based on the initial operation states and a distributed depth deterministic strategy gradient technology, and a transient stability prevention and control strategy of the power system is obtained according to the state estimation data and the action Actor network. According to the method, effective prevention and control measures can be rapidly provided, the electric power system is adjusted to be in a safe state, the electric power system can resist expected faults, the control measures have the operation cost close to the optimal cost, and therefore the operation safety and economical efficiency of the electric power system are guaranteed.

Description

technical field [0001] The application belongs to the technical field of power system stability control, and in particular, relates to a method and device for preventing and controlling transient stability of a power system. Background technique [0002] With the continuous increase of power demand, the operation of power system is often close to the limit of safety and stability. Once a serious emergency occurs, the system stability may be damaged, and then cascading failures occur, resulting in catastrophic consequences and huge economic losses. If the corresponding measures can be formulated quickly through preventive control in emergency situations, especially in extreme weather conditions, before the failure occurs, the system can be restored to a safe state in time. Transient stability preventive control is an optimal power flow problem with transient stability constraints in mathematics. Solving this problem is difficult and time consuming due to the transient stabi...

Claims

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Application Information

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IPC IPC(8): H02J3/06H02J3/46
CPCH02J3/06H02J3/466H02J2203/10H02J2203/20H02J2300/40
Inventor 郭庆来周艳真曾泓泰孙宏斌王彬吴文传
Owner TSINGHUA UNIV
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