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Sending end power grid power source structure planning method considering local load peak regulation capacity

A technology of local load and grid power, applied in wind power generation, energy storage, AC network with energy trade/energy transmission authority, etc., can solve the random output of renewable energy and random load fluctuation consideration, not considering the problem of energy abandonment, It can solve problems such as waste of power generation energy to achieve low-carbon environmental protection, reduce the peak-to-valley difference of the system, and achieve good environmental protection.

Active Publication Date: 2019-04-09
国家电网有限公司西南分部 +2
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  • 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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  • Sending end power grid power source structure planning method considering local load peak regulation capacity
  • Sending end power grid power source structure planning method considering local load peak regulation capacity
  • Sending end power grid power source structure planning method considering local load peak regulation capacity

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Embodiment

[0214] In this embodiment, the power structure planning method of the power grid at the sending end considering the local load peak-shaving capability is applied to a region A in my country to realize the power supply expansion demand in this region in 2020, focusing on the local load peak-shaving capability, and at the same time taking into account the participation of new energy in regulation. Peak, clean energy curtailment cost and peak shaving demand, channel constraints, demand response and other factors. Hydropower accounts for the majority in this area. In 2017, various types of units were installed as follows: 85.97 million kilowatts of hydropower, 33.61 million kilowatts of thermal power, 2.44 million kilowatts of wind power, 2.26 million kilowatts of solar power, and 260 thousand kilowatts of other types of units, totaling 124.54 million kilowatts. In 2020, it is planned to increase the unit capacity as follows: 23.8 million kilowatts of thermal power, 120.25 million k...

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Abstract

The invention relates to a sending end power grid power source structure planning method considering local load peak regulation capacity. A power source structure planning model is established in combination with various actual constraint conditions such as peak regulation constraints on the basis of considering wind and light storage peak regulation capacity and local load peak regulation capacity. The method comprises the following steps: establishing a power source structure planning model considering local load peak regulation capacity; obtaining a unit maintenance plan, considering to addthe power and local load peak regulation capacity of an energy storage wind power plant and a solar power station, and carrying out random production simulation of wind, solar energy, water, fire andpumping storage power generation; and obtaining hybrid particle swarm optimization to solve the power source structure planning model, and thus obtaining an optimal power source structure planning scheme. Compared with the prior art, the method has the advantages that users and electric automobiles are considered to serve as local load to participate electric power system peak regulation actively, the difference between peak and valley of the system can be reduced effectively and the difficulty of electric power system peak regulation is relieved.

Description

technical field [0001] The invention relates to the technical field of power system structure planning of electric power systems, in particular to a power structure planning method of a power grid at a sending end in consideration of local load peak-shaving capabilities. Background technique [0002] Power supply 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 within the planning period and on the premise of ensuring the specified power supply reliability indicators, fully considering the operating characteristics of each power plant, and the system. Based on factors such as the coordination of fuel sources and transportation conditions, simulation calculations, reliability analysis, and technical and economic analysis are carried out on various possible planning schemes, and the most reasonable power supply structure and the best power supply ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/46H02J3/28
CPCH02J3/383H02J3/386H02J3/008H02J3/28H02J3/46H02J2310/14H02J2203/20Y02E70/30Y02E10/56Y02E10/76
Inventor 路亮魏明奎周全江栗柳璐蔡绍荣程浩忠张程铭袁杨
Owner 国家电网有限公司西南分部
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