10 kv-distribution network reactive power compensation optimization method in power system

Abstract

The invention discloses a 10 kv-distribution network reactive power compensation optimization method in a power system. The method comprises the following process steps of: firstly, determining the structure and the actual load condition of a distribution network and obtaining a topological structure of the distribution network by modeling the structure, such as the connection mode of lines, the number of distribution transformers, and the quantity and the positions of reactive compensation devices before compensating, of the distribution network; secondly, inputting original data; thirdly, calculating parameters before reactive power compensation; fourthly, taking the minimal network loss as a target, optimizing the reactive power compensation capacity and the position of the 10 kv-distribution network by a genetic algorithm; fifthly, selecting optimization calculation of configuration capacity based on life cycle management; sixthly, finishing an optimization process and outputting an optimization result; and finally, checking and ratifying a compensation effect by performing load flow calculation before and after optimizing the configuration, and regulating the scheme based on the checked and ratified compensation effect. The method has the advantages that: the cost of power supply enterprises can be optimized when reactive power compensation is provided; the utilization rate of equipment is improved; and the economic benefit of the power supply enterprises is improved.

Description

technical field [0001] The invention relates to a reactive power compensation optimization method for a 10kV distribution network in a power system, and belongs to the technical field of power distribution networks. Background technique [0002] The concept of asset life cycle cost (LCC) originated from the Swedish railway system and was implemented by the US Department of Defense in 1965. In 1996, the International Electrotechnical Commission (IEC) issued the relevant international standard: IEC60300-3-3, and released a revised version in July 2004. In addition, the International Conference on Large Power Grids (CIGRE) also proposed in 2004 to use life cycle cost to improve equipment management. [0003] The initial application of asset life cycle cost evaluation is as an economic method to evaluate projects / assets in decision-making, including the process and activities of systematically analyzing project / asset schemes with life cycle costs as design parameters. The purp...

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Problems solved by technology

[0022] The present invention proposes a reactive power compensation optimization method for a 10kv distribution network in a power system. While comprehensively considering the cost, loss reduction target and voltage regulation effect, and finding the optimal reactive power compensation configuration method, it solves the problem of current investment ineffectiveness. When using power compensation equipment, only part of the cost such as input cost is considered, and the whole life cycle cost in reactive power compensation is ignored, including the cost in operation (such as maintenance cost, failure cost) and abandonment cost, resulting in excessive and economical costs for power supply enterprises. The problem of reduced efficiency

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