Unitization system medium voltage distribution network planning method based on load correlation coefficient

Abstract

The invention relates to a medium voltage distribution network planning method for an electric power system, and particularly relates to a unitization system medium voltage distribution network planning method based on a load correlation coefficient. The unitization system medium voltage distribution network planning method comprises the following steps: 1, data collection and acquisition of daily load characteristic, quarter load characteristics and annual load characteristics of different users are performed based on an electric energy mass online monitoring system, and user archival information is established; 2, a government department links and collects documents and masters planning construction property and scale of each regional block of a city; and 3, oriented by power utilization requirement (based on urban control and regulation) of land blocks, a comprehensive typical load prediction model is established. By adoption of the technical scheme, the problems of low load rate, high construction investment, difficulty in land applying, and the like caused by insufficient power utilization requirement classification and analysis and the fact that the load development requirement is satisfied by only increasing system capacity existing in the prior art are solved; the power grid equipment utilization rate and power grid economic benefit can be greatly improved; and reference basis is provided for the power grid investment and construction.

Description

technical field [0001] The present application relates to a method for planning a medium-voltage distribution network in a power system, in particular to a method for planning a medium-voltage distribution network based on a load correlation coefficient in a unit system. Background technique [0002] Due to historical development reasons, my country's medium and low voltage distribution network is basically built following the needs of users, and is greatly influenced by investors. Its grid structure and power supply mode have always lacked unified planning and standardized management. The distribution network planning method widely used in my country is based on the Failure Mode and Effects Analysis (FEMA) or "N-k" safety criterion planning method, that is, the whole system is studied on a case-by-case basis, and k refers to the system in It can still maintain normal operation after losing k devices. Therefore, the distribution network planning method in my country is basic...

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Problems solved by technology

With the further scarcity of land resources in built-up areas, it is difficult to increase the distribution of new power points, so the method of ensuring reliability and load development requirements by increasing system reserve capacity cannot be implemented

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