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A distributed generation planning method in distribution network based on scenario analysis

A distributed power supply and distribution network technology, applied in resources, instruments, data processing applications, etc., can solve problems such as inconsistent planning schemes, and achieve the effect of easy implementation and simple principle

Active Publication Date: 2019-03-22
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a distributed power distribution network planning method based on the scene analysis method, which solves the problem that the planning scheme in the prior art does not match the actual situation

Method used

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  • A distributed generation planning method in distribution network based on scenario analysis
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  • A distributed generation planning method in distribution network based on scenario analysis

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Experimental program
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Effect test

Embodiment 1

[0053] Such as figure 1 As shown, a distributed power generation planning method in a distribution network based on a scenario analysis method of the present invention is implemented according to the following steps:

[0054] Step 1. Take the IEEE33-node distribution network with distributed wind power as an example for simulation analysis. The distribution network structure is as follows figure 2 Shown. Assuming that distributed power sources are installed at 4 nodes, according to the actual wind farm data, the wind power investment cost is 8,000 yuan / kW, the photovoltaic investment cost is 2,000 yuan / kW, the equipment life cycle is 25 years, and the discount rate is 8%. The on-grid electricity price is 0.95 yuan / (kW·h), the wind power on-grid price is 0.61 yuan / (kW·h), and the DG operation and maintenance rate is 0.03.

[0055] Step 2: Collect distributed photovoltaic output and distributed wind power output and load data in the target area; the collection frequency is once an h...

Embodiment 2

[0079] Such as figure 1 As shown, a distributed power generation planning method in a distribution network based on a scenario analysis method of the present invention is implemented according to the following steps:

[0080] Step 1: Take the US PG&E69 node distribution network as an example for simulation analysis, the distribution network structure is as follows Picture 12 Shown. Assuming that distributed power sources are installed at 4 nodes, according to the actual wind farm data, the wind power investment cost is 8,000 yuan / kW, the photovoltaic investment cost is 2,000 yuan / kW, the equipment life cycle is 25 years, and the discount rate is 8%. The on-grid electricity price is 0.95 yuan / (kW·h), the wind power on-grid price is 0.61 yuan / (kW·h), and the DG operation and maintenance rate is 0.03.

[0081] Step 2: Collect distributed photovoltaic output and distributed wind power output and load data in the target area; the collection frequency is once every 15 minutes.

[0082] S...

Embodiment 3

[0107] Such as figure 1 As shown, a distributed power generation planning method in a distribution network based on a scenario analysis method of the present invention is implemented according to the following steps:

[0108] Step 1. Take the IEEE14-node distribution network as an example for simulation analysis. The distribution network structure is as follows Figure 13 Shown. Assuming that distributed power sources are installed at 4 nodes, according to the actual wind farm data, the wind power investment cost is 8,000 yuan / kW, the photovoltaic investment cost is 2,000 yuan / kW, the equipment life cycle is 25 years, and the discount rate is 8%. The on-grid electricity price is 0.95 yuan / (kW·h), the wind power on-grid price is 0.61 yuan / (kW·h), and the DG operation and maintenance rate is 0.03.

[0109] Step 2: Collect distributed photovoltaic output and distributed wind power output and load data in the target area; the collection frequency is once every 15 minutes, that is, four...

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Abstract

The invention discloses a distributed generation planning method in a distribution network based on a scene analysis method, which obtains the structure, line parameters and load distribution of a distribution network in a target area and establishes a distribution network structure model. Collecting distributed photovoltaic output and decentralized wind power output and load data of target area,and establish scene set; Introducing cross-correlation entropy evaluation function to improve attractor clustering algorithm for scene reduction; The objective model is established and solved by usingthe cultural genetic algorithm. Finally, acquiring the optimal planning scheme of distributed generation in distribution network. The invention can effectively simulate the processing of the distributed power source and the load fluctuation in the actual situation, and the planning result is more reliable. The principle of scene analysis is simple and easy to implement.

Description

Technical field [0001] The invention belongs to the technical field of distributed power access planning, and specifically relates to a distributed power planning method in a distribution network based on a scenario analysis method. Background technique [0002] The use of renewable energy to generate electricity is now an important measure in the country's energy transition. Connecting to the grid in the form of distributed power is one of the important ways. After the distributed power sources are connected to the distribution network, the distribution network is transformed from a single-point power supply and radial network structure to a multi-point power supply network, which will inevitably cause changes in the size and direction of the power flow in the line. Secondly, due to the uncertainty of the wind and solar resources, the distributed power sources connected to the distribution network may bring voltage fluctuations to the grid and so on. In order to make full and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06393G06Q50/06Y02E40/70Y04S10/50
Inventor 段建东何浩韩玉慧
Owner XIAN UNIV OF TECH
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