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A Load Forecasting Method for Distribution Networks Containing Distributed Power Sources

A distributed power supply and load forecasting technology, which is applied in forecasting, electrical digital data processing, special data processing applications, etc., can solve the problems of the accuracy of load forecasting results and the failure to consider the output time characteristics of distributed power sources, etc.

Active Publication Date: 2016-08-03
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When considering the impact of distributed power generation on planning, distribution network planners often simply regard it as a "negative load" and consider its impact on the maximum load of the power grid, without considering the time characteristics of distributed power output. have a great impact on the accuracy of load forecasting results

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  • A Load Forecasting Method for Distribution Networks Containing Distributed Power Sources
  • A Load Forecasting Method for Distribution Networks Containing Distributed Power Sources
  • A Load Forecasting Method for Distribution Networks Containing Distributed Power Sources

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Embodiment Construction

[0059] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0060] figure 1 with figure 2 Respectively, the flow chart of the distribution network load characteristic prediction method with distributed power generation and the functional relationship curve between the output power of the wind turbine and the wind speed.

[0061]In this embodiment, a medium-sized city in the north is taken as an example, and the planned annual area is about 100 square kilometers. Assuming that wind turbines and photovoltaics will be installed in qualified areas in the future, the distribution network load forecast considering distributed power generation is carried out for this area.

[0062] (1) Collect load forecast information

[0063] ①Climatic conditions

[0064] The climate conditions in this area are shown in Table 1:

[0065] Table 1

[0066]

[0067] ②Installed scale of distributed power supply

[0068] According to...

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Abstract

The invention provides a distribution network load forecasting method including a distributed power source, the distributed power source includes a wind power generating set and a photovoltaic power generation system; including the following steps: collecting load forecasting information; predicting the annual load characteristic curve of the planning area; predicting Annual output characteristic curve of distributed power generation; prediction of annual load characteristic curve of distribution network containing distributed power generation. The invention considers the random characteristics of distributed power output, simulates the annual output curve of distributed power through Monte Carlo simulation, then obtains the overall load characteristic curve of the distribution network on the basis of different land use load predictions, and finally synthesizes the overall load characteristics Based on the time characteristic superposition principle and distributed power output characteristics, the net load annual characteristic curve of distribution network can be obtained, which can well solve the load forecasting problem of distribution network with distributed power.

Description

technical field [0001] The invention belongs to the technical field of distribution network planning, and in particular relates to a distribution network load prediction method including distributed power sources. Background technique [0002] Medium- and long-term load forecasting is the premise and foundation of distribution network planning. Distribution network planning must predict both the total amount of future load and the location of future load growth, that is, medium- and long-term load forecasting and spatial load forecasting. Reasonable distribution network planning has important guiding significance. [0003] With a large number of distributed power sources connected to the distribution network, the load forecasting work of the distribution network will face unprecedented challenges. The output of distributed power sources such as wind turbines and photovoltaic power generation is affected by the climate, which has the characteristics of large randomness and l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00G06Q10/04G06Q50/06
Inventor 赵明欣陈海刘思革刘苑红刘伟苏剑
Owner STATE GRID CORP OF CHINA
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