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Distributed power supply site selection optimization method based on power distribution network probabilistic load flow calculation

A probabilistic power flow calculation, distributed power technology, applied in design optimization/simulation, calculation, calculation model, etc., can solve problems such as affecting power grid security, increasing distribution network loss, affecting power grid economy, etc., to improve power supply. Stability, reduce network loss, improve scientific effect

Active Publication Date: 2021-03-05
STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH
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Problems solved by technology

On the one hand, due to the timing mismatch between photovoltaic power generation and load demand, the randomness of regional distribution network power flow increases, thereby reducing the voltage quality of the distribution network and affecting the safety of power grid operation; on the other hand, distributed photovoltaic power generation Connecting to the power grid may increase the network loss of the distribution network and affect the economics of power grid operation

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  • Distributed power supply site selection optimization method based on power distribution network probabilistic load flow calculation
  • Distributed power supply site selection optimization method based on power distribution network probabilistic load flow calculation
  • Distributed power supply site selection optimization method based on power distribution network probabilistic load flow calculation

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[0057] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0058] ginseng figure 1 As shown, the present invention discloses a distributed power generation location optimization method based on distribution network probabilistic power flow calculation, including:

[0059] S1. Construct a multi-objective optimization model considering the dynamic characteristics of the distribution network;

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Abstract

The invention discloses a distributed power supply site selection optimization method based on power distribution network probabilistic load flow calculation. The method comprises the following steps:S1, constructing a multi-objective optimization model considering dynamic characteristics of a power distribution network; S2, extracting a sample from the original data through a Latin hypercube sampling method; S3, taking the sampled samples as input, and performing probabilistic load flow calculation on the power distribution network in different operation states; and S4, performing scheme optimization on distributed power supply site selection based on a vector evaluation genetic algorithm. According to the invention, power distribution network planning personnel can reasonably arrange the distribution points and the operation mode of the distributed photovoltaic power supply, the scientificity of power distribution network planning decision making can be improved, the rising effect on the voltage when the distributed photovoltaic power supply is accessed can be fully utilized, the network loss is reduced, and the power supply stability is improved.

Description

technical field [0001] The invention belongs to the technical field of power supply planning, and in particular relates to a distributed power supply location optimization method based on distribution network probability power flow calculation. Background technique [0002] With the rapid development of distributed generation technology, the problems caused by photovoltaic and other distributed generation (Distributed Generation, DG) connected to the distribution network cannot be ignored. On the one hand, due to the timing mismatch between photovoltaic power generation and load demand, the randomness of regional distribution network power flow increases, thereby reducing the voltage quality of the distribution network and affecting the safety of power grid operation; on the other hand, distributed photovoltaic power generation Connecting to the power grid may increase the network loss of the distribution network and affect the economy of the power grid operation. At the sa...

Claims

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Application Information

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IPC IPC(8): G06F30/27H02J3/00G06F111/06G06F113/04G06N3/00G06N3/12
CPCG06F30/27H02J3/00H02J2203/10H02J2203/20G06F2111/06G06F2113/04G06N3/006G06N3/126Y04S10/50
Inventor 周嘉
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH
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