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Direct-current-bus-voltage-based adaptive coordination control method for distributed power supply

A technology of DC bus voltage and distributed power supply, applied in the direction of DC network circuit devices, electrical components, circuit devices, etc., can solve the problems of complex control algorithms and control strategies, frequent communication, system paralysis, etc., and achieve simple control and scheduling strategies. , the cost of power generation is expensive, and the effect of reducing the burden

Inactive Publication Date: 2012-05-02
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

This control method has great disadvantages: too much reliance on centralized coordination control and management equipment, frequent communication, once the management equipment or communication lines fail, it is easy to cause system paralysis, the increase or decrease of equipment in the system needs to modify the control algorithm and control strategy, and control Algorithms and control strategies are complex

Method used

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  • Direct-current-bus-voltage-based adaptive coordination control method for distributed power supply
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  • Direct-current-bus-voltage-based adaptive coordination control method for distributed power supply

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Embodiment Construction

[0014] DC power generation equipment such as photovoltaic cells are connected to the DC bus through DC / DC devices; AC power generation equipment such as wind turbines and gas generators are connected to the DC bus through AC / DC; energy storage batteries are connected to the DC bus through bidirectional DC / DC; bidirectional The DC / AC side of the inverter is connected to the DC bus, and the other side is connected to the AC bus or the public power grid. Each device on the DC bus determines its own working mode and power by detecting the voltage on the DC bus, and sets the priority level of each device by assigning different voltages to each device. The structure of distributed power generation based on DC bus is as follows: figure 1 According to the distributed power supply structure based on the DC bus according to the method of the present invention, the DC bus connected to the power control cabinet is used for the power control cabinet to monitor the DC bus voltage. The dire...

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Abstract

The invention belongs to the technical field of power supplies of power systems, and relates to a direct-current-bus-voltage-based adaptive coordination control method for a distributed power supply. Direct current bus voltage is allowed to fluctuate, and each piece of equipment on a direct current bus adaptively regulates running power according to the direct current bus voltage and a voltage threshold value which is preset in the equipment. Therefore, dependence on centralized coordination management equipment is reduced, the independence of each piece of equipment in the distributed power supply is enhanced, and the aim of realizing the plug and play of each piece of equipment is fulfilled.

Description

technical field [0001] The invention belongs to the technical field of power supply of electric power system, and relates to an adaptive coordination control method of distributed power supply based on DC bus voltage. Background technique [0002] At present, distributed power sources are composed of photovoltaic cells, wind power generators, gas generators, energy storage batteries and other equipment in China, and generally have centralized coordination control management equipment, which is used in the system to coordinate and control each power generation equipment in each The power generation power of the time period, the charging and discharging power of the energy storage battery, and the charging and discharging time period. This control method has great disadvantages: too much reliance on centralized coordination control and management equipment, frequent communication, once the management equipment or communication lines fail, it is easy to cause system paralysis, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/00
Inventor 田世明
Owner CHINA ELECTRIC POWER RES INST
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