Reactive power optimization control method of distribution network

A technology of power optimization and control method, applied in the direction of reactive power adjustment/elimination/compensation, reactive power compensation, circuit devices, etc.

Inactive Publication Date: 2018-11-13
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art, and provide a method for solving the optimal control problem of reactive power in the distribution network using the moth flame optimization algorithm, which does not require a lot of control when solving the ORPD problem parameters, making the optimization method simple and easy

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  • Reactive power optimization control method of distribution network
  • Reactive power optimization control method of distribution network
  • Reactive power optimization control method of distribution network

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Embodiment Construction

[0058] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0059] The overall flow chart of the present invention is as figure 1 As shown, the moth flame method is used to solve the optimal reactive power scheduling problem.

[0060] 1. OPRD mathematical modeling

[0061] 1.1 Objective function

[0062] In the present invention, the objective function of the OPRD problem is to minimize the power loss and voltage deviation of the transmission system under the conditions of equality constraints and inequality constraints. The OPRD problem can be formulated as the minimization of a function f(x,u) as follows:

[0063]

[0064] The function f(x,u) is the objective function. In addition, g(x,u)=0 and h(x,u)≦0 are equality constraints and inequality constraints, respectively. In OPRD, the equality constraints are the power balance equations and the inequality constraints are the generator voltages, t...

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Abstract

The invention discloses a reactive power optimization control method of distribution network. The traditional reactive power optimization model is based on definite system conditions without considering the uncertain factors. The invention utilizes moth flame optimization algorithm to solve reactive power optimization control problem of distribution network, maps control variable from each moth toload flow date, and then calculates load flow to obtain transmission loss through matpower software; at each iteration, the update position of each moth is relative to the flame, and after the updateposition, the transmission loss of the corresponding moth is obtained; updated control variables are checked to see if they exceed the limit, and if they do, they are marked at the lower and upper limits for accurate results; 3) The evaluation process is repeated until it is terminated by the maximum iterative algebra restriction. The invention does not need many control parameters when solving the reactive power optimization dispatching problem, and the optimization method is simple and easy to implement.

Description

technical field [0001] The invention relates to the field of reactive power optimization in electric power systems, in particular to a method for solving the optimal control problem of reactive power in a distribution network by using a moth flame optimization algorithm. Background technique [0002] In recent decades, the study of power systems has become an increasingly important topic as electricity has become the cornerstone of modern economic development. The power system is a system of power generation, transmission and distribution for industrial, residential and transportation users; moreover, the power system is also the core of the renewable energy system. As the demand for electricity increases, the consumption of resources will also increase. The optimal reactive power dispatch (ORPD) problem in the power system refers to the problem of adjusting the terminal voltage of the generator, adjusting the tap ratio of the transformer, and changing the output of the rea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCH02J3/18H02J2203/20Y02E40/30
Inventor 楼伯良陆海清黄弘扬李培邓晖杨涛吴栋萁沈轶君吴俊陈峰华文
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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