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Distribution network expansion planning method based on virtual station area and load cloud of urban and rural planning land

A technology for urban and rural planning and station areas, applied in data processing applications, AC network circuits, instruments, etc., can solve the problems of large amount of continuous analysis of terminal voltage, large number of station area variables, etc.

Active Publication Date: 2022-06-21
竺炜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the actual 10kV line has a large number of station area variables, and the calculation amount of the continuous analysis of the terminal voltage is still relatively large

Method used

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  • Distribution network expansion planning method based on virtual station area and load cloud of urban and rural planning land
  • Distribution network expansion planning method based on virtual station area and load cloud of urban and rural planning land
  • Distribution network expansion planning method based on virtual station area and load cloud of urban and rural planning land

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] 1. Construction of P-Q-T load cloud density model for various typical loads based on historical data collection

[0018] The load types are roughly divided into: residential areas, commercial areas, industrial areas, schools, hospitals and so on. With the improvement of the power consumption data acquisition system, based on the big load data, the station area P and Q (ie active power and reactive power) of various load types can be sampled.

[0019] If the sampling frequency of a day is n, Ti is the time of adoption, and i=1,2,...,n, the [P Ti ,Q Ti ,T i ] point set is called P-Q-T load cloud.

[0020] Select a reasonable power supply unit for different load types, such as area, scale, production capacity, etc., and divide by the unit value to obtain the P-Q-T load cloud density model of various typical loads on typical days in different seasons.

[0021] For example, according to the characteristics of the local residential floor area ratio, the residential areas ...

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Abstract

The voltage drop analysis of the 10kV preset line is the basis of distribution network expansion planning. According to the land planning purpose, the adjacent areas of the same load type are integrated into a virtual station area; based on the collection of station area load data, each The typical daily P-Q-T load cloud density model of similar loads, so as to obtain the typical daily P-Q-T load cloud model of each virtual station area; generate a 10kV distribution network expansion plan according to the virtual station area distribution of the planned land, and aim at its Preset the line, based on the moment method and the P-Q-T load cloud of the virtual station area along the line, get the end pressure drop curve of a typical day, and optimize the line shape, length, and power supply area of ​​the line according to the maximum value of the curve and the peak-to-valley difference And direction, in order to ensure voltage security and improve line utilization. The invention provides relatively complete key information for distribution network expansion planning, does not need artificial estimation, and has good engineering value and popularization prospect.

Description

technical field [0001] 10kV distribution network planning Background technique [0002] The continuous voltage drop analysis of 10kV preset line is the basis of distribution network expansion planning. According to the maximum voltage drop and peak-to-valley difference of the preset line on a typical day, the direction, power supply area, line type and length of the line can be optimized to ensure voltage safety and improve line utilization. However, the topology of 10kV distribution network is complex and the model is imprecise, the number of line platforms is large and the load is random, which brings great difficulties to the continuous voltage drop analysis of the line and the expansion planning of the distribution network. [0003] The current "grid-based" planning method of the distribution network starts with constructing a "grid maximum active load density map". The idea is derived from the principle of digital imaging. By marking the maximum active load in the map...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q10/04G06Q50/06
CPCH02J3/00G06Q10/04G06Q50/06H02J2203/20Y04S10/50
Inventor 竺炜
Owner 竺炜
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