Method for optimizing transmitting end grid power supply structure in consideration of channel constraints

A technology of grid power supply and optimization method, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., and can solve problems such as unconsidered energy abandonment, impact on results, random output of renewable energy, and consideration of random fluctuations in loads, etc.

Active Publication Date: 2019-02-26
国家电网有限公司西南分部 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method focuses on the analysis of the matching degree of source and load, but does not consider the random output of renewable energy and the random fluctuation of load, which will have a certain impact on the final result
At the same time, the invention is mainly aimed at the power supply planning of the receiving-end power grid with UHV access, and insufficient consideration is given to the power supply planning of the sending-end power grid with large-scale hydropower, and each model does not consider the energy abandonment problem generated after random production simulation, which will cause A large amount of potential energy is wasted

Method used

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  • Method for optimizing transmitting end grid power supply structure in consideration of channel constraints
  • Method for optimizing transmitting end grid power supply structure in consideration of channel constraints
  • Method for optimizing transmitting end grid power supply structure in consideration of channel constraints

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Embodiment

[0230] In this embodiment, the method for planning the power supply structure of the sending-end power grid considering channel constraints is applied to a certain region A in my country to achieve the power expansion demand in this region in 2020, focusing on channel constraints, while considering new energy participation in peak shaving and local load peak shaving Capacity, clean energy abandonment cost, peak shaving demand, demand response and other factors. Hydropower accounts for the majority in this region. In 2017, the various types of machine assembly machines are as follows: hydropower 85.97 million kilowatts, thermal power 33.61 million kilowatts, wind power 2.24 million kilowatts, solar 2.26 million kilowatts, and other types of generating units of 260,000 kilowatts, totaling 124.54 million kilowatts. The capacity of the units that can be increased by 2020 is planned to be as follows: thermal power 23.8 million kilowatts, hydropower 120.25 million kilowatts, wind power...

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Abstract

The invention relates to a method for optimizing a transmitting end grid power supply structure in consideration of channel constraints, comprising the following steps of acquiring unit data, load related data and price information data; establishing a power supply structure optimization model in consideration of channel constraints; obtaining a unit overhaul plan, and in consideration of adding an energy storage wind farm, the output of a solar power plant, a local peak load regulation capacity and a key section transmission capacity, performing random production simulation of wind, solar, water, fire and pumped storage power generation; and solving the power supply structure optimization model by using a hybrid particle swarm optimization algorithm to obtain an optimal power supply structure optimization solution. Compared with the prior art, the method considers the transmission capacity constraint of the key section, ensures that the newly-introduced unit does not limit the outputdue to insufficient section transmission capacity, and ensures the economical efficiency and rationality of a planning scheme.

Description

Technical field [0001] The invention relates to the technical field of power system power supply structure optimization, in particular to a method for optimizing the power supply structure of a transmission-end power grid considering channel constraints. Background technique [0002] Power planning refers to the investigation and implementation of the site and construction conditions of each power plant based on the predicted power load demand and load characteristics during the planning period, and under the premise of ensuring the specified power supply reliability indicators. Based on the coordination of fuel sources and transportation conditions, simulation calculations, reliability analysis, and technical and economic analysis of various possible planning schemes are carried out to determine the most reasonable power supply structure and the best power supply planning scheme. Among them, determining a reasonable power supply structure is the content of power supply structure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/381H02J2203/20
Inventor 路亮周全魏明奎江栗程浩忠蔡绍荣柳璐张程铭袁杨
Owner 国家电网有限公司西南分部
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