Distributed power supply planning method based on improved DC power flow algorithm

A technology of distributed power supply and DC power flow, which is applied in the direction of AC network circuits, electrical components, circuit devices, etc., and can solve problems such as lowering system reliability due to installation location, abandoning light and wind for access capacity, and overvoltage

Active Publication Date: 2019-04-19
HOHAI UNIV +1
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Problems solved by technology

However, the rapid development of distributed power has also brought a series of problems to the power system, such as the unreasonable installation location will reduce the reliability of the system; the large ...

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  • Distributed power supply planning method based on improved DC power flow algorithm
  • Distributed power supply planning method based on improved DC power flow algorithm
  • Distributed power supply planning method based on improved DC power flow algorithm

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[0068] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be described in detail below in combination with the accompanying drawings and implementation examples. It should be understood that the specific implementation cases described here are only used to explain the present invention, and are not intended to limit the invention.

[0069] figure 1 It is a flowchart of the method of the present invention. Considering the life-cycle cost of distributed power, this paper selects the maximum net income of distributed power operators within the planning period as the optimization goal, including the annual online sales revenue of distributed power, annual electricity price subsidy income, installation cost, annual operation and maintenance costs and initial fixed investment costs.

[0070]

[0071]

[0072] In the formula: N PRO is the optimization objective of the model, including O Sell , O Go...

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Abstract

The invention discloses a distributed power supply planning method based on an improved DC power flow algorithm. The method comprises the following steps: 1) importing data and inputting an initial value; 2) introducing the improved DC power flow algorithm considering voltage and reactive power to realize decoupling of voltage amplitude and phase angle in a branch power flow equation; 3) proposinga distributed power supply planning method considering coordinated optimization of an energy storage system and active management measures based on the algorithm; 4) adopting an iterative solution flow based on hot start for ensuring the precision of the planning method; 5) taking the net income of a distributed power supply operator as a target through combination with a specific power distribution network structure, and carrying out optimal configuration on the position and capacity of the distributed power supply. Through the distributed power supply planning method based on the improved direct current power flow algorithm, the net benefits of a distributed power supply operator can be increased, the consumption of the distributed power supply can be promoted, and the system network loss can be reduced.

Description

technical field [0001] The invention relates to the field of distribution network planning, in particular to a distributed power supply planning method based on an improved DC power flow algorithm. Background technique [0002] Distributed power generation planning refers to determining the installation location and configuration capacity of DG on the basis of known load forecast results and distribution network operating conditions, so as to optimize the economy and reliability of the distribution network during the entire planning period. [0003] Today, a single power supply system characterized by large units, large power grids, and high voltage can no longer meet the increasing requirements for power quality, safety and reliability. It has increasingly become a research hotspot at home and abroad. However, the rapid development of distributed power has also brought a series of problems to the power system, such as the unreasonable installation location will reduce the ...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/00H02J3/06
CPCH02J3/008H02J3/06H02J3/381H02J2203/20
Inventor 朱俊澎袁越范志成唐亮孙辰军王卓然
Owner HOHAI UNIV
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