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Power grid structure optimization method and system suitable for large-scale new energy grid connection

A technology of power grid structure and optimization method, which is applied in the directions of AC network circuit, design optimization/simulation, photovoltaic power generation, etc. Problems such as high cost, to achieve the effect of promoting the consumption of renewable energy, improving safety and economy, and precise investment

Inactive Publication Date: 2021-02-23
STATE GRID JIANGSU ECONOMIC RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing power system planning theories and methods based on typical operation modes are difficult to adapt to the complex, diverse and highly uncertain planning needs in the future, and cannot solve the problems of renewable energy consumption and high system costs

Method used

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  • Power grid structure optimization method and system suitable for large-scale new energy grid connection
  • Power grid structure optimization method and system suitable for large-scale new energy grid connection
  • Power grid structure optimization method and system suitable for large-scale new energy grid connection

Examples

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Embodiment 1

[0234] Example 1, the effectiveness of the power grid structure optimization model is verified in the IEEE-30 node system. The topology of the IEEE-30 node system is derived from the parameter description of the IEEE standard system. The load curve is as follows image 3 shown, and renewable energy data such as Figure 4 As shown, the above legends are derived from real operating data.

[0235] Two analysis scenarios are set up, the scenario pair optimizes the network structure, and the scenario 2 does not optimize the network structure.

[0236] The optimization results obtained in Scenario 1 include unit combination plan, transmission network structure optimization plan, system cost, thermal power unit output and renewable energy consumption rate, etc. The results show that there are only 4 thermal power generating units, and the unit combination plan is shown in Table 1. Transmission network structure optimization plan such as Figure 5 , where 0 means the line is open a...

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Abstract

The invention discloses a power grid structure optimization method suitable for large-scale new energy grid connection, and relates to the technical field of power grid planning. The method comprisesthe following steps: step 1, establishing a power grid structure optimization model through constraint conditions; 2, inputting basic data into the power grid structure optimization model; and 3, outputting a data result optimized by the power grid structure optimization model. According to the invention, problems that complex, diverse and highly-uncertain planning requirements in the future are difficult to adapt, renewable energy consumption cannot be solved, and the system cost is too high can be solved.

Description

technical field [0001] The invention relates to the technical field of power grid planning, in particular to a grid structure optimization method and system for large-scale new energy grid connection. Background technique [0002] After a high proportion of renewable energy is connected to the grid, the form of the grid will gradually transform from "quantitative change" to "qualitative change", and the system's load and generation balance, stability mechanism, and security boundaries will all undergo essential changes. The existing power system planning theories and methods based on typical operation modes are difficult to adapt to the complex, diverse and highly uncertain planning needs in the future, and cannot solve the problems of renewable energy consumption and high system costs. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a grid structure optimization method and system suitable for large-scale new ene...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/38G06F30/18G06F30/20G06F111/04G06F113/06G06F113/04
CPCH02J3/00H02J3/381G06F30/18G06F30/20H02J2203/20H02J2300/24H02J2300/28G06F2111/04G06F2113/06G06F2113/04Y02E10/56
Inventor 胡晓燕张文嘉许偲轩彭竹弈赵菲菲谢珍建刘梅罗欣祁万春王荃荃李辰孙文涛韩杏宁
Owner STATE GRID JIANGSU ECONOMIC RES INST
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