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A Power Support Method Considering Adjacent Systems

A technology of electricity and algorithms, applied in system integration technology, information technology support systems, instruments, etc., can solve problems such as low efficiency of black start, cannot be ignored, system loss, etc., achieve safe and reliable black start recovery, and speed up the process of network reconstruction , The effect of shortening the path recovery time

Active Publication Date: 2017-07-11
ELECTRIC POWER SCHEDULING CONTROL CENT OF GUIZHOU POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today, with the mature development of ultra-high voltage direct and alternating current transmission, the role of the power support of adjacent systems in the recovery process cannot be ignored; and according to the nature of the disaster and the location of the occurrence, the reliability of certain equipment must be considered in the path selection , Restoration cost, if forcibly supplying power to these devices, it is easy to cause low efficiency or even failure of black start, and bring greater losses to the system

Method used

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  • A Power Support Method Considering Adjacent Systems
  • A Power Support Method Considering Adjacent Systems
  • A Power Support Method Considering Adjacent Systems

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Experimental program
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Effect test

Embodiment

[0035] A method of power support that takes into account adjacent systems, comprising the steps of:

[0036] (1) Establishing the objective function: the network reconfiguration process of each time step of path recovery is equivalent to a multi-objective problem, including the maximization of the unit start-up objective, the maximization of the load restoration objective and the minimization of the path objective. The objective function is described as follows:

[0037] Among them, f 1 is the inversion of the total generating capacity of the successfully started units within the unit start time limit, m is the number of black start partitions in the power grid, P smax is the sum of the generating capacity of the units successfully started within the unit start time limit in partition s; f 2 The maximum time required to build the recovery grid for each partition, in T max =max{T 1 ,T 2 ,...,T k} means; f 3 is the comprehensive weight of the target node and target line ...

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Abstract

The invention discloses an electric power supporting method taking adjacent systems into consideration, and relates to the field of recovery and control of an electric power system. The method comprises the following steps: a, establishing an object function; b, contracting a node; c, calculating a line betweenness; and d, optimizing and recovering a line. According to the invention, through recovering a generator and a load as much as possible and searching for an optimal power delivery path, the network reconstruction process is accelerated, and the path recovery time is shortened. Besides, path recovery and power support of adjacent electric power systems in the condition of a climate disaster are taken into consideration, and black-start recovery after an electric power system fails completely is safer and more reliable.

Description

technical field [0001] The invention relates to the field of power system recovery control, in particular to a power support method considering adjacent systems. Background technique [0002] Power system recovery control refers to the control process of recovering the system to a new normal operating state to the greatest extent in the shortest possible time after the power system fails, some loads of the system are out of power or even in the state of decommissioning, or even the whole network is out of power. Restoration control is a multi-objective, multi-stage, multi-variable, non-linear combinatorial optimization problem with multiple constraints. It is difficult to determine the optimization strategy as a whole, and it is often decomposed into a series of sub-problems to be dealt with separately. According to the main recovery objects, it can be divided into: unit start-up, network reconstruction and load recovery. [0003] For the research on unit start-up optimizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 黄文伟刘明孙斌田年杰马覃峰王平白加林王成亮舒勤滕欢刘念李华强邱晓燕陈实周步祥
Owner ELECTRIC POWER SCHEDULING CONTROL CENT OF GUIZHOU POWER GRID CO LTD
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