Electromagnetic hybrid device and method for synergetic compensation of high-speed railway multi-station electric energy quality

Abstract

The invention discloses an electromagnetic hybrid device and a method for synergetic compensation of the high-speed railway multi-station electric energy quality. Active power three-phase transfer of a multi-station traction power supply system is achieved by the aid of an RPC (railway power conditioner), reactive power of designated capacity is outputted for compensation, bus negative sequence components are further reduced with power factor guaranteed, and an MSVC (magnetic-control static var compensator) outputs reactive power to compensate residual bus negative sequence current. By the aid of multi-station synergetic optimum compensation and RPC power transfer characteristics, installed capacity of the MSVC is effectively saved, local dynamic response speed is increased, manufacture cost of the whole device are reduced, and running reliability of the whole device is improved. The device and the method can be used for compensating the electric energy quality of the electrified railway traction power supply system and particularly used for negative sequence compensation, reactive compensation and harmonic wave filtering, and have good application prospect on the occasions that high-speed railways are extremely unbalanced in load.

Description

technical field

[0001] The invention belongs to the technical field of power quality analysis and control of electrified railways, and in particular relates to an electromagnetic hybrid high-speed railway multi-site power quality collaborative compensation device and method. Background technique

[0002] Electrified railway has become one of the transportation modes that my country has focused on in recent years due to its advantages of high passenger capacity, large transportation capacity, high speed, safety and energy saving. From the perspective of the operating characteristics of electrified railway locomotives, they can be divided into two categories: conventional electrified railway locomotives and high-speed railway locomotives. Among them, the conventional electrified railway locomotive mainly adopts the AC-direct transmission mode. Our country has relatively mature research in this technical field, but the power of the DC motor is proportional to the volume, which ...

Examples

Embodiment Construction

[0040] The invention aims at ensuring that the power supply bus for the traction substation complies with the national power quality standard, and achieves the purpose of reducing the installation capacity of the compensation devices at each station through the mutual coordination of the hybrid compensation devices on multiple traction substations on the same bus. In order to achieve the above object, the present invention adopts the multi-stage magnetic valve type magnetron reactor (MSMCR) as the basic device of the magnetically controlled static var compensation device (MSVC), and adopts the MSMCR to improve the reliability of the entire MSVC system, which can reach 20 years Maintenance free. The present invention combines large-capacity MSVC and small-capacity RPC, and uses MSVC and RPC to perform multi-site collaborative compensation. On the same power supply bus, multiple sites generally do not reach the maximum load at the same time, so the multi-site power quality collab...

technical field

[0001] The invention belongs to the technical field of power quality analysis and control of electrified railways, and in particular relates to an electromagnetic hybrid high-speed railway multi-site power quality collaborative compensation device and method. Background technique

[0002] Electrified railway has become one of the transportation modes that my country has focused on in recent years due to its advantages of high passenger capacity, large transportation capacity, high speed, safety and energy saving. From the perspective of the operating characteristics of electrified railway locomotives, they can be divided into two categories: conventional electrified railway locomotives and high-speed railway locomotives. Among them, the conventional electrified railway locomotive mainly adopts the AC-direct transmission mode. Our country has relatively mature research in this technical field, but the power of the DC motor is proportional to the volume, which ...

Examples

Embodiment Construction

[0040] The invention aims at ensuring that the power supply bus for the traction substation complies with the national power quality standard, and achieves the purpose of reducing the installation capacity of the compensation devices at each station through the mutual coordination of the hybrid compensation devices on multiple traction substations on the same bus. In order to achieve the above object, the present invention adopts the multi-stage magnetic valve type magnetron reactor (MSMCR) as the basic device of the magnetically controlled static var compensation device (MSVC), and adopts the MSMCR to improve the reliability of the entire MSVC system, which can reach 20 years Maintenance free. The present invention combines large-capacity MSVC and small-capacity RPC, and uses MSVC and RPC to perform multi-site collaborative compensation. On the same power supply bus, multiple sites generally do not reach the maximum load at the same time, so the multi-site power quality collab...

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