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Method and device for suppressing subsynchronous resonance of double-fed induction generator-series compensation power transmission system

A sub-synchronous resonance, doubly-fed fan technology, applied in the field of electric power, to achieve the effect of convenient transformation, more flexible transformation and low cost

Active Publication Date: 2017-05-31
NORTH CHINA ELECTRICAL POWER RES INST +2
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Problems solved by technology

[0004] The invention provides a method and device for suppressing subsynchronous resonance of a double-fed fan series compensation transmission system to solve one or more deficiencies in the prior art

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  • Method and device for suppressing subsynchronous resonance of double-fed induction generator-series compensation power transmission system
  • Method and device for suppressing subsynchronous resonance of double-fed induction generator-series compensation power transmission system
  • Method and device for suppressing subsynchronous resonance of double-fed induction generator-series compensation power transmission system

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0037] Aiming at problems such as complex implementation of existing additional damping control, complex calculation of control in the DQ coordinate system, inconvenient implementation, large influence of the implementation of centralized suppression measures on the grid side, and long implementation period, the present invention provides a double-fed fan series compensation The method for suppressing the subsynchronous resonance of the power transmission system can simplify the calculation, implement it flexibly, and shorten the implementation period.

[0038] figur...

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Abstract

The invention provides a method and a device for suppressing subsynchronous resonance of a double-fed induction generator-series compensation power transmission system. The method includes converting current of the double-fed induction generator-series compensation power transmission system into a current component under a stationary alpha-beta coordinate system of a rotor; subjecting the double-fed induction generator-series compensation power transmission system to proportional resonant control, and regulating resonance frequency points under proportional resonant control into the subsynchronous resonance of the current component under the alpha-beta coordinate system of the rotor so as to suppress the subsynchronous resonance in the double-fed induction generator-series compensation power transmission system on a generator side. Based on the proportional resonant control under the alpha-beta coordinate system of the rotor, the method and the device are capable of simplifying computation, improving computation efficiency and suppressing the subsynchronous resonance on the generator side, thereby being flexible to implement and short in implementation cycle.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method and device for suppressing subsynchronous resonance of a doubly-fed fan series compensation power transmission system. Background technique [0002] Large-capacity long-distance power transmission is the main feature of the development of wind power generation in my country. Wind power series compensation is an important means to improve power transmission capacity and has been widely used in China. The operating characteristics of the cluster wind power transmitted through the series compensation transmission system are complex, and may face risks such as sub-synchronous resonance; Texas, a certain area in North China, and a certain area in Northeast China have successively occurred wind power sub-synchronous resonance (Sub-synchronous Resonance, SSR) , of which North China is the most typical because of the large scale of wind power grid-connected and the frequ...

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Application Information

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IPC IPC(8): H02J3/24
CPCH02J3/24
Inventor 胡应宏邓春李雨刘辉蔡巍彭珑
Owner NORTH CHINA ELECTRICAL POWER RES INST
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