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Power generation cost constraint-based multi-domain scheduling method considering energy storage power system

A technology of power generation cost and energy storage system, applied in wind power generation, system integration technology, information technology support system, etc., can solve problems such as inability to fully absorb wind power, high cost, redundant reserve capacity, etc.

Active Publication Date: 2020-02-21
ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved is: to provide a multi-domain scheduling method based on power generation cost constraints and taking into account energy storage power system, which is used to solve the redundancy of reserve capacity in the existing technology, the cost is too high, and the technology that cannot fully absorb wind power question

Method used

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  • Power generation cost constraint-based multi-domain scheduling method considering energy storage power system
  • Power generation cost constraint-based multi-domain scheduling method considering energy storage power system
  • Power generation cost constraint-based multi-domain scheduling method considering energy storage power system

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Embodiment

[0136] Taking the dispatching scheme of a regional power grid system in Liaoning, my country as an example, verify the effectiveness and feasibility of the model and method of the present invention, wherein the structure of the regional power grid in Liaoning is as follows Figure 5 shown. The example system includes a wind power cluster with an installed capacity of 350MW and a thermal power unit with a total installed capacity of 600MW, and is equipped with a 120MW·h energy storage system. The minimum storage capacity is 15MW h, the initial energy storage is 20MW h, the rated charging and discharging power is 40MW, and the charging and discharging efficiency is 0.92.

[0137] (1) Objective function

[0138] Considering the cost of various regulation resources under different domains comprehensively, the generation cost is calculated according to the constraints under each domain in 96 scheduling periods.

[0139]

[0140] Table 1 Control variables in different regions ...

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Abstract

The invention discloses a power generation cost constraint-based multi-domain scheduling method considering an energy storage power system and belongs to the technical field of power system scheduling. By utilizing the scheduling characteristic of a transferable load of the energy storage system, an important role of flexible scheduling can be played in the actual scheduling of the power system. The multi-domain scheduling method is provided from the perspective of flexible scheduling of source storage, influence of factors such as load, wind power output random fluctuation and system regulation capability is comprehensively considered, and all regulation capacities in the system are uniformly scheduled and redistributed into three control domains, namely a normal domain taking complete wind power consumption as a target, an abnormal domain needing to call an energy storage system to consume wind power, and an emergency domain without regulation capability and forced wind curtailment.Under different domains, through reasonable matching of a conventional thermal power generating unit and an energy storage system, multi-domain economic dispatching is achieved with maximum clean energy consumption as the target.

Description

technical field [0001] It belongs to the technical field of power system dispatching, and in particular relates to a multi-domain dispatching method based on power generation cost constraints and considering energy storage power systems. Background technique [0002] In recent years, on the energy supply side, the proportion of new energy has increased tremendously. After large-scale new energy is connected to the grid, it will have an impact on the main network, threatening the stability and security of the system. Wind power, a renewable energy source, is not only abundant in resources and widely distributed, but also clean and environmentally friendly. It develops very rapidly. However, wind power has the characteristics of randomness, indirect uncertainty and anti-peak regulation, which poses severe challenges to the power system. In order to effectively accommodate wind power, a large number of researches have been carried out on the operation and design of wind power e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/46H02J3/38H02J3/28G06Q10/06G06Q50/06
CPCH02J3/00H02J3/46H02J3/28G06Q10/06315G06Q10/06312G06Q50/06Y02E70/30Y02E10/76Y04S10/50Y02E40/70
Inventor 王顺江刘宇航刘俊德李铁贾依霖黄南天
Owner ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY
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