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Motor series system with reactive compensation and active power flow control functions and control method

A series system, power flow control technology, applied in the directions of reactive power compensation, reactive power adjustment/elimination/compensation, and AC networks with the same frequency from different sources, can solve the problems of uneven power flow distribution of power transmission and transformation equipment, etc. Achieve voltage stability, power flow control, and active power control

Inactive Publication Date: 2021-07-02
NANJING NARI GROUP CORP +1
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Problems solved by technology

[0003] In order to deal with the impact and challenge brought by the massive access of distributed power sources on the safe and stable operation of the system, and to solve the problem of uneven power flow distribution of power transmission and transformation equipment, the present invention proposes a MGP with both reactive power compensation and active power flow control and control method

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  • Motor series system with reactive compensation and active power flow control functions and control method
  • Motor series system with reactive compensation and active power flow control functions and control method
  • Motor series system with reactive compensation and active power flow control functions and control method

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Embodiment Construction

[0050] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0051] The invention provides an MGP (Motor-Generator Pair) system with reactive power compensation and active power flow control, which is composed of a synchronous motor and a synchronous generator coaxially connected, and the synchronous motor drives the synchronous generator to rotate. The synchronous motor side is the power supply side, and the synchronous generator side is the grid side.

[0052]At least one of the synchronous motor and the synchronous generator is a double-field-winding synchronous motor. Double excitation winding synchronous motor means that the number of excitation windings is twice the number of pole pairs. In particular, when the number of pole pairs of the motor excitation winding P=1, it refers to dual-axis ex...

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Abstract

The invention discloses a motor series system with reactive power compensation and active power flow control and a control method. A synchronous motor is coaxially connected with a synchronous generator, and the synchronous motor drives the synchronous generator to rotate to form the motor series system, which is called an MGP system for short. At least one of a synchronous motor and a synchronous generator in the MGP system is a double excitation winding synchronous motor. Reactive power is adjusted by changing exciting current of a main exciting winding and an auxiliary exciting winding of the synchronous motor, and reactive compensation is achieved. The active power of the line where the MGP is located is adjusted by changing the position of a double-excitation-winding resultant magnetic field of the synchronous motor, and therefore active power flow control over the line is achieved. Double-shaft excitation is adopted, reactive power control is achieved, meanwhile, active power control can be directly achieved, and other devices are not needed.

Description

technical field [0001] The invention relates to the technical field of power system stability and control, in particular to a motor series system and control method with both reactive power compensation and active power flow control. Background technique [0002] Vigorously developing renewable energy is a practical and feasible way to solve the energy shortage in the world today. However, the problem of uneven distribution of renewable energy means that the generated electric energy needs to be transmitted to the load center over long distances. UHV AC and DC transmission is an effective technical solution for long-distance large-capacity power transmission. With the comprehensive promotion and application of UHV AC-DC transmission technology, the power grid is not only a carrier of electric energy transmission in the traditional sense, but also a powerful energy conversion, efficient configuration and interactive service platform. Through this platform, primary energy suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/06H02J3/38H02J3/01H02J3/24H02J3/40
CPCH02J3/01H02J3/06H02J3/18H02J3/381H02J3/40H02J3/241H02J2203/10H02J2300/20Y02E40/30Y02E40/40
Inventor 许其品杨玲刘国华朱宏超谢燕军史玉华孙竞轩
Owner NANJING NARI GROUP CORP
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