Electric energy conversion and switching system for multiple buses

A technology for electric energy conversion and switching systems, applied in control systems, electrical components, AC motor control, etc., can solve the problems of reducing the life of the motor, requiring relatively high system capacity, and having a large impact
CN106887992APending Publication Date: 2017-06-23上海申能电力科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海申能电力科技有限公司
Publication Date
2017-06-23

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Abstract

The invention provides an electric energy conversion and switching system for multiple buses in a thermal power plant. The frequency and / or the voltage of at least one connection end can be adjusted by an electric energy converter. Meanwhile, the electric energy is controlled to flow among the buses of the thermal power plant, wherein the buses are different in frequency. Or, the electric energy is controlled to flow among the buses of the thermal power plant, wherein the buses are the same in frequency or are different in frequency. Moreover, the throttling loss is reduced and even eliminated. The performance of a frequency-conversion generator set is fully played and the overall efficiency of the system is improved. As a result, the energy consumption is reduced and higher economic benefits are created. Meanwhile, a bus is divided into a plurality of segments for power supply, so that the running safety and the running reliability of the auxiliary machine of the frequency-conversion system are improved. In addition, through improving the motor starting and switching method of the auxiliary machine of the thermal power plant, the flexibility of the overall operation mode of the system is improved.
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Description

technical field

[0001] The invention relates to a multi-bus electric energy conversion and switching system, which can control the flow of electric energy between plant buses of different frequencies in a thermal power plant, or can control electric energy at different frequencies and control electric energy at the same frequency The flow between the plant busbars can help the electric motors of the plant auxiliary machines of the thermal power plant to start and / or switch. Background technique

[0002] Energy conservation and emission reduction are not only the external requirements put forward by the state and society for thermal power plants, but also the internal requirements for thermal power plants to reduce costs, increase profits, and fulfill social responsibilities. Therefore, thermal power plants are actively tapping internal potentials and carrying out energy-saving transformation , innovative design, or adopt new technologies and new equipment, do everything poss...

Claims

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