A Method for Evaluating Operational Efficiency of Power Distribution Equipment Considering Reliability and Economy

Abstract

The invention relates to a distribution equipment operation efficiency evaluation method involving reliability and economy, comprising the steps of: (1) determining upper and lower limits P2 and P1 of an economical operation interval; (2) rearranging distribution equipment time sequence load curves in order of size to obtain a load duration curve; (3) determining the supplied electric quantity S1 exceeding the upper limit P2 of the economical operation interval, the supplied electric quantity S2 in the economical operation interval, and the electric quantity S3 below the lower limit P1 of the economical operation interval; (4) determining the equipment lacked electric quantity S4 and equipment loss electric quantity S5; (5) determining the correction factor alpha of the GDP generated by each kilowatt-hour according to the GDP of the area where equipment is located, social electricity consumption per year and average retail price; and (6) determining equipment operation efficiency according to an equipment operation efficiency evaluation model. The method involves the factors of safety, reliability, economic operation, utilization rate and duration, and can more comprehensively evaluate the operation efficiency of distribution equipment in a full time domain.

Description

technical field [0001] The invention relates to distribution network planning and design, construction and transformation and operation monitoring technology, in particular to a method for evaluating the operation efficiency of distribution equipment considering reliability and economy. Background technique [0002] How to objectively analyze the operating efficiency of distribution network assets, and then improve resource allocation and improve operational efficiency is one of the important issues facing the current distribution network planning, operation and management. At present, the indicators for evaluating the efficiency of distribution networks at home and abroad mainly include "transformer average load rate", "line average load rate", "unit variable capacity power supply", "unit line length power supply", "light-load line ratio", "Light-load transformer ratio", "capacity-load ratio", etc. are mostly single indicators, and the problems that can be reflected are oft...

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Problems solved by technology

In addition, the operating state of the distribution network is constantly changing over time. The existing indicators based on load and electricity can only represent the static situation at a certain time section, and cannot accurately reflect the operation of the distribution network. The overall situation of the dynamic change of efficiency in the time dimension has great limitations

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