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Multi-objective optimization configuration method and system for AC/DC hybrid system

A technology of power generation system and converter, which is applied in the field of multi-objective optimal configuration, and can solve problems such as inability to obtain environmental protection indicators

Active Publication Date: 2021-04-13
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] This application provides a multi-objective optimization configuration method and system for an AC-DC hybrid system, which is used to solve the problem that some technical indicators and environmental protection indicators in the system cannot be obtained temporarily in the actual planning of the existing technology, and the multi-objective cannot be effectively carried out. Technical Problems of Optimal Configuration Analysis

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  • Multi-objective optimization configuration method and system for AC/DC hybrid system
  • Multi-objective optimization configuration method and system for AC/DC hybrid system
  • Multi-objective optimization configuration method and system for AC/DC hybrid system

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Embodiment 1

[0065] Please refer to figure 1 , which is a method flow chart of an embodiment of an efficiency evaluation method for a distributed renewable energy power generation system in the present application. The efficiency evaluation method for a distributed renewable energy power generation system disclosed in the present application includes the following steps:

[0066] S100. Dividing the distributed renewable energy power generation system into links, obtaining several links for system efficiency evaluation, and establishing an efficiency evaluation index model for each link; wherein:

[0067] In one embodiment, the distributed renewable energy power generation system includes a photovoltaic power generation system and a wind power generation system, and can refer to figure 2 with image 3 On the one hand, this application considers dividing the links of the photovoltaic power generation system into four links: the link from the outlet of the photovoltaic converter to the gate...

Embodiment 2

[0125] Please refer to Figure 4 , which is a schematic structural diagram of an embodiment of an efficiency evaluation system for a distributed renewable energy generation system in the present application. The efficiency evaluation system for a distributed renewable energy generation system disclosed in this embodiment includes an efficiency evaluation index model Module 10, efficiency grade division module 20, each link status evaluation model building module 30 and evaluation result feedback module 40, wherein:

[0126] The efficiency evaluation index model module 10 is used to divide the links of the distributed renewable energy power generation system, obtain several links for system efficiency evaluation, and establish an efficiency evaluation index model for each link;

[0127] The efficiency grade division module 20 is used to substitute the collected historical data into the efficiency evaluation index model within the preset historical data collection time, and calc...

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Abstract

The invention discloses an efficiency evaluation method and system for a distributed renewable energy power generation system. The method comprises the steps of carrying out the link division of the distributed renewable energy power generation system, and building an efficiency evaluation index model for each link, substituting the collected historical data into an efficiency evaluation index model within preset historical data collection time, calculating historical efficiency evaluation values of all links, and dividing the historical efficiency evaluation values into n efficiency levels, adopting a support vector machine model training algorithm to carry out model training on each link, and establishing a state evaluation model of each link, calculating the latest efficiency evaluation value of each link, taking the latest efficiency evaluation value as the input of the state evaluation model, and outputting the latest system working state under each link, and judging the efficiency level of each link according to the latest efficiency evaluation value, and returning check and optimization suggestions of the link in a set evaluation period according to the operation efficiency index and the state evaluation result.

Description

technical field [0001] The present application relates to the technical fields of AC-DC hybrid power distribution and micro-grid, and in particular to a multi-objective optimal configuration method and system for an AC-DC hybrid system. Background technique [0002] With the rapid development of photovoltaic power generation, energy storage, electric vehicles, high-density IT loads in data centers and DC air conditioners, in order to facilitate the direct integration of DC distributed power, energy storage and loads, it is necessary to adopt DC power distribution technology. Compared with AC power distribution technology, the main advantage of DC power distribution technology is that the overall efficiency is higher, because it uses fewer interface converters than AC network, the network structure is simple, and there is no reactive current circulation and distributed power in the network. Unit synchronization and other issues improve the controllability and reliability, and...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/46
CPCH02J3/381H02J3/46H02J2203/20H02J2300/24H02J2300/28Y02E10/56Y02B10/10
Inventor 赵伟王伟张弛张威曾杰谢宁
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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