Method and device for wind turbine generators participating in power grid emergency control

A wind turbine and emergency control technology, applied in circuit devices, electrical components, AC network circuits, etc., can solve problems such as the inability to further increase DC power, excessive or insufficient control measures, and limiting the application of emergency control means for wind turbines.

Active Publication Date: 2019-12-17
NARI TECH CO LTD +3
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Problems solved by technology

On the one hand, the new energy grid-connected power is coupled with the DC transmission capacity, showing a "seesaw" relationship; on the other hand, the multi-DC transmission power is constrained by the shortage of emergency control resources, and the DC power cannot be further improved
Two factors lead to the limitation of new energy grid-connected power and DC output capaci

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  • Method and device for wind turbine generators participating in power grid emergency control
  • Method and device for wind turbine generators participating in power grid emergency control
  • Method and device for wind turbine generators participating in power grid emergency control

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Embodiment Construction

[0065] The present invention will be further described below in conjunction with the accompanying drawings. 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.

[0066] Incorporating wind power rapid power control into grid emergency control can effectively increase emergency control resources and increase the power of DC transmission of new energy. Increase the network capacity and increase the grid-connected power. At the same time, replacing rigid cut-off with new energy control can reduce the impact on the power grid, reduce the secondary hazards or cascading failure probability of the power grid caused by power flow transfer and voltage changes, and increase the grid-connected power of new energy during failures.

[0067] A system for wind turbines participating in power grid emergency control of the present invention, see figure 1 As shown, from ...

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Abstract

The invention discloses a method and device for a wind turbine generators participating in power grid emergency control. The emergency control system comprises a plurality of wind turbine generators and an energy storage system. The emergency control method comprises steps that the control measure quantity of the emergency control system is determined according to the different fault information;the control measure quantity is distributed to each wind turbine generator to obtain the measure quantity corresponding to each wind turbine generator; the adjustment quantity of an energy storage system is determined according to the execution condition of each wind turbine generator on the measure quantity. The device and the method are advantaged in that the active and reactive power rapid adjustable capabilities of a wind turbine generator inverter are utilized, the wind turbine generators are incorporated into the power grid emergency control system, and the power grid emergency control resources can be improved.

Description

technical field [0001] The invention relates to the technical field of electric power system automation control, in particular to a method and device for wind turbines to participate in emergency control of a power grid. Background technique [0002] At present, the transmission and consumption of hydropower, wind power, and photovoltaic power generation have begun to appear. Therefore, it is urgent to establish a long-term mechanism to promote the development and consumption of renewable energy power. [0003] my country's wind power is mainly concentrated in the Northwest, Northeast, and North China regions, and some provinces in the Northwest have more than 50% of their wind power output. Gansu, Xinjiang, and Qinghai have large centralized photovoltaic installed capacity, and Qinghai's photovoltaic / solar thermal installed capacity accounts for 34.7%. In 2018, China's average wind curtailment rate was 7%, a year-on-year decrease of 5 percentage points, and the average sol...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/00Y02E10/76
Inventor 郄朝辉刘福锁李威李兆伟石渠朱玲黄慧胡阳吴雪莲常海军王超张倩赵彦丽常潇樊瑞肖莹
Owner NARI TECH CO LTD
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