Intelligent identification and optimization method for operation mode of park power distribution system

A technology of power distribution system and operation mode, applied in the direction of electrical components, circuit devices, AC network circuits, etc.

Active Publication Date: 2020-06-09
STATE GRID ZHEJIANG ELECTRIC POWER +4
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: to intelligently optimize the operation mode of the distribution network in the park and optimize the appropriate switch decision-making scheme

Method used

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  • Intelligent identification and optimization method for operation mode of park power distribution system
  • Intelligent identification and optimization method for operation mode of park power distribution system
  • Intelligent identification and optimization method for operation mode of park power distribution system

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Embodiment Construction

[0060] Embodiments and specific operation processes of the present invention will be described below in conjunction with the accompanying drawings, but the scope of protection of the present invention is not limited to the following specific descriptions.

[0061] Step a: Collect electrical related data of the power distribution system in the park, and make photovoltaic output forecast and load forecast for the second day. Among them, the park is at distribution point N 2 ,N 10 and N 14 Connected to photovoltaic equipment, the specific photovoltaic output forecast and load forecast process are as follows:

[0062] (1) According to the strong correlation between the size of photovoltaic output and light intensity and temperature, and the strong correlation between load size and temperature, humidity and day type, collect historical related data and perform data preprocessing.

[0063] (2) Considering that the load data is discontinuous time series data obtained at a certain ...

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Abstract

The invention discloses an intelligent identification and optimization method for the operation mode of a park power distribution system. The method comprises the steps of: collecting the historical related data of a park to perform photovoltaic output prediction and load prediction; proposing a Bayesian probability graph model based on node voltage and switch state association according to a current topological structure, and effectively identifying the operation mode of the current topology of the park distribution network system by adopting a confidence degree reasoning algorithm; and providing a distribution network operation optimization model taking transformer substation load rate balance as a target on the basis of the operation mode of the current topology with photovoltaic outputand a load prediction result fully considered. According to the method of the invention, under the condition of comprehensively considering the photovoltaic output, load prediction and the like, thepower flow constraint and transfer constraint of the network are fully considered, and the operation mode of the park topology, which enables the optimal substation load balance is solved by adoptinga genetic algorithm, so that the day-ahead optimized power supply reliability of the park power distribution system is ensured.

Description

technical field [0001] The present invention relates to the field of optimal dispatching of power distribution system operation mode, in particular to an intelligent optimization technology considering the operation mode of power distribution system under photovoltaic access park, and belongs to the field of intelligent power distribution and utilization. Background technique [0002] With the continuous acceleration of the construction of urban residential quarters and the access of a large number of photovoltaics, the park power distribution system, which ensures the safety and reliability of power supply in the community, has faced a series of new challenges. On the one hand, as a representative of clean energy power generation technology, photovoltaics have won the attention of the society with the advantages of high efficiency and low energy consumption, and are gradually connected to the power distribution system of residential areas. However, the large-scale access of...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00
Inventor 章立宗刘理峰沈勇侯炜蒋玮钱一宏韩连山姚建立范强罗刚徐光福赵峰金渊文毛航银段胜朋姚一杨张鲁
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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