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Coordinated scheduling method and system for wind, fire, storage and direct current systems

A DC system, coordinated dispatching technology, applied in wind power generation, energy storage, AC network load balancing, etc., can solve problems such as non-compliance with clean energy development and utilization, weak grid framework, low load level, etc., to improve wind power consumption capacity , the effect of reducing wind power curtailment and improving utilization

Pending Publication Date: 2021-01-19
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

The wind-fired bundled delivery method requires thermal power to have a certain peak-shaving capability, but in areas rich in wind power resources, the load level is usually relatively low, and the grid framework is weak, so its peak-shaving capability is weak. The construction of supporting large-scale thermal power plants is not in line with the original intention of clean energy development and utilization

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  • Coordinated scheduling method and system for wind, fire, storage and direct current systems
  • Coordinated scheduling method and system for wind, fire, storage and direct current systems
  • Coordinated scheduling method and system for wind, fire, storage and direct current systems

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Embodiment Construction

[0094] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0095] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0096] The present invention provides a coordinated scheduling method for wind, fire, storage and DC systems, such as figure 1 As shown, the method includes:

[0097] Step 101. Determ...

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Abstract

The invention relates to a coordinated scheduling method and system for a wind, fire, storage and direct current system. The coordinated scheduling method comprises the steps: determining the optimalcharging and discharging power of an energy storage system according to the wind power output of a wind-fire bundling delivery system; determining the actual extra-high voltage direct current transmission power according to the rated extra-high voltage direct current transmission power, and determining the optimal thermal power output of the wind-thermal power bundled delivery system by using theactual extra-high voltage direct current transmission power; controlling the charging and discharging power of the energy storage system to be the optimal charging and discharging power, and controlling the thermal power output of the wind-thermal bundling delivery system to be the optimal thermal power output. According to the technical scheme provided by the invention, the advantages of charging, discharging and power response of the energy storage system are fully utilized, the energy storage system is brought into schedulable peak regulation resources, and the stability of output force ofa wind, fire and storage combined system is ensured; meanwhile, the utilization rate of a direct-current transmission channel and the wind power absorption capacity of a receiving-end power grid are improved.

Description

technical field [0001] The invention belongs to the field of coordinated dispatching of electric power systems, in particular to a method and system for coordinated dispatching of wind, fire, storage and direct current systems. Background technique [0002] With the depletion of fossil energy and the increasing pressure on the environment, the strategic adjustment of the energy structure is particularly important, and clean energy, mainly renewable energy, occupies an important position in the energy development strategies of all regions. [0003] In recent years, wind power has developed rapidly. However, wind power resources and loads are inversely distributed, and the consumption capacity of areas rich in wind power resources tends to be saturated, and wind abandonment is common. The power transmission method is the main means for large-scale wind power transmission and consumption across regions. Wind power output has the characteristics of fluctuation and intermittency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/36H02J3/38H02J3/46
CPCH02J3/28H02J3/36H02J3/46Y02E10/76Y02E60/60Y02E70/30
Inventor 崔红芬叶季蕾杨波王德顺薛金花李铁崔岱张彤黄佳伟冯鑫振周晨姜枫徐宇
Owner CHINA ELECTRIC POWER RES INST
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