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Power system reactive power optimization method and system

A technology of power system and optimization method, applied in the field of power system, can solve problems such as poor optimization results, lack of load uncertainty and infeasibility of reactive power optimization methods

Inactive Publication Date: 2014-10-15
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0004] In view of this, this application provides a reactive power optimization method and system for power systems, which is used to solve the problem that existing reactive power optimization methods lack consideration of load uncertainty, resulting in poor optimization results or even infeasibility

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  • Power system reactive power optimization method and system
  • Power system reactive power optimization method and system
  • Power system reactive power optimization method and system

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Embodiment Construction

[0085] 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 this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0086] see figure 1 , figure 1 It is a flow chart of a reactive power optimization method for a power system disclosed in the embodiment of this application.

[0087] Such as figure 1 As shown, the method includes:

[0088] Step 100: Establishing a reactive power optimization mathematical model, said reactive power optimization mathematical model including reactive power optimization objective function and reactive power optimization constraints;

[0089] Specifically, with the ...

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Abstract

The invention discloses a power system reactive power optimization method and system. The method includes building a reactive power optimization mathematical model including a reactive power optimization target function and a reactive optimization constraint condition, determining control variable of the reactive power optimization mathematical model, utilizing normal distribution to simulate load distribution of a power system, then utilizing the reactive power optimization target function and the load distribution of the power system to determine a fitness function of a genetic algorithm, coding the control variable and utilizing the genetic algorithm to solve the reactive power optimization mathematical model. By means of the method and system, the uncertainty of the model and the randomness of the future operation environment are predicted according to the load, and the normal distribution is utilized to simulate the load distribution of the power system. When the fitness function of the genetic algorithm is determined, the effect of load distribution uncertainty of the power system is reduced, so that a solution finally obtained in an optimization mode is closer to the truth.

Description

technical field [0001] The present application relates to the technical field of electric power systems, and more specifically, relates to a reactive power optimization method and system of electric power systems. Background technique [0002] Power system reactive power optimization is an effective means to ensure the safe operation of the power system, reduce the system active power loss and maintain the normal level of voltage. Through reactive power optimization, rationally adjust the generator terminal voltage, the gear position of the adjustable transformer, and the best switching of compensation equipment to achieve the minimum active power loss of the system, the best voltage level and the lowest system operating cost. [0003] The existing reactive power optimization problems mainly focus on the selection of the objective function and the improvement of the optimization method. Most of the conforming models used are single models, and there is a lack of research on ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18G06N3/12
CPCY02E40/30
Inventor 万凌云栗秋华谈四美伏进吴高林宋伟邓帮飞周庆朱光友刘钊宫林张海兵夏磊肖前波蔺立唐凤英
Owner STATE GRID CORP OF CHINA
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