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Power system dispatching method based on flexible direct current transmission and pumped storage power station energy storage

A technology for power system dispatching and flexible DC transmission, which can be applied in electrical energy storage systems, general control systems, AC network circuits, etc., and can solve problems such as increased adjustment costs, no consideration of wind power in pumped-storage power stations, and increased adjustment loads.

Active Publication Date: 2020-12-11
TSINGHUA UNIV +2
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, for systems fed by large-scale renewable energy, the traditional active power control method does not consider soft, direct and flexible modulation, and the traditional deterministic method cannot better adapt to the strong random fluctuation of large-scale high-density renewable energy, and cannot guarantee reliable consumption
[0003] In the current flexible DC transmission system of the power system, the pumped storage power station is not considered to stabilize the fluctuation of wind power, which will increase the regulation load of the traditional unit and increase the regulation cost

Method used

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  • Power system dispatching method based on flexible direct current transmission and pumped storage power station energy storage
  • Power system dispatching method based on flexible direct current transmission and pumped storage power station energy storage
  • Power system dispatching method based on flexible direct current transmission and pumped storage power station energy storage

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Embodiment Construction

[0076] The present invention proposes a power system dispatching method based on flexible direct current transmission and pumped-storage power station energy storage. The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0077] The present invention proposes a power system scheduling method based on flexible direct current transmission and pumped storage power station energy storage. The overall process is as follows figure 1 shown, including the following steps:

[0078] (1) Establish a power system dispatching model based on flexible DC transmission and pumped storage power station energy storage, which is composed of objective functions and constraints; the specific steps are as follows:

[0079] In the present invention, the power system based on flexible DC transmission and pumped-storage power station energy storage consists of a number of new energy power stations (usually referring to wind power and photovoltai...

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Abstract

The invention proposes a power system scheduling method based on flexible direct current transmission and pumped storage power station energy storage, which belongs to the technical field of power system operation control. This method is suitable for power systems including flexible direct transmission systems and pumped storage power stations. By establishing and solving the optimal dispatching model of power systems based on flexible direct current transmission and pumped storage power stations composed of objective functions and constraints, the pumped storage The ability to store energy, adjust unstable new energy output, stabilize the fluctuation of new energy power generation, make the power flowing into the load center appear in a stable ladder shape, and obtain the optimal dispatching plan. The invention considers the fluctuation of renewable energy in the power system, and utilizes the advantages of flexible direct current transmission to enable the load center to receive high-quality and stable power, reduce the regulation pressure of thermal power on the fluctuation of new energy, and improve the regulation efficiency of the power system. Flexibility ensures the security of the power system, and is suitable for scenarios such as rolling dispatch of the power system.

Description

technical field [0001] The invention belongs to the technical field of power system operation control, and specifically proposes a power system scheduling method based on flexible direct current transmission and pumped storage power station energy storage. Background technique [0002] The dispatching of the power system plays an important guiding role in the operation of the power system. It is responsible for formulating the output plan of the generator set, and achieving optimal operation under the premise of meeting the power load and ensuring the safety of the power system. In recent years, more and more wind power has been connected to the power system, and the output of wind power is fluctuating. Therefore, the pump-storage pair can be used to stabilize the fluctuation of wind power and reduce the regulation load of thermal power units. At the same time, for systems fed by large-scale renewable energy, the traditional active power control method does not consider soft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/28H02J3/48H02J3/36
CPCH02J3/28H02J3/48H02J3/36G05B13/047G05B2219/2639G05B19/042H02J15/003H02J2300/40H02J3/466Y02E60/60H02J2300/28H02J2203/20
Inventor 王彬杜延菱吴文传刘海涛孙宏斌孙为民慕宗达蔺晨晖郭庆来
Owner TSINGHUA UNIV
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