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The automatic start-stop control method of wind turbines in wind farms with the smallest deviation in hours

A wind turbine, automatic start-stop technology, applied in wind power generation, single-grid parallel feeding arrangement, etc., can solve the problem of reducing the service life of wind turbines and related accessories, and achieve the effect of improving service life and avoiding frequent start and stop.

Active Publication Date: 2016-01-20
STATE GRID CORP OF CHINA +2
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, frequent startup and shutdown operations will reduce the service life of wind turbines and related accessories

Method used

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  • The automatic start-stop control method of wind turbines in wind farms with the smallest deviation in hours
  • The automatic start-stop control method of wind turbines in wind farms with the smallest deviation in hours
  • The automatic start-stop control method of wind turbines in wind farms with the smallest deviation in hours

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The method for automatic start-stop control of wind turbines in wind farms with the smallest deviation in hours proposed by the present invention comprises the following steps:

[0027] (1) Collect the real-time active power p of each wind turbine currently connected to the grid from the wind turbine monitoring system w , active upper limit and active lower limit Real-time collection and adjustment of the wind farm control command p issued by the master station from the power grid dispatching center set , the real-time value p of the active power of the grid-connected point of the wind farm is collected in real time from the monitoring system of the booster station real ;

[0028] (2) Set the wind farm active power control dead zone p dead (manual instruction, generally 1% of the capacity of the wind farm), to judge the ability of the grid dispatching master station to receive wind power:

[0029] (2.1) If p set >p real +p dead , then it is determined that the...

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Abstract

The invention relates to a method for controlling automatic starting and automatic stopping of wind turbine generators by using a wind power plant with minimum hourage deviation, and belongs to the technical field of running and controlling on a new energy connected electrical power system. According to a principle of fair-share scheduling, when control requirements can be met by continuously adjusting the active power of the grid-connected wind turbine generators, a starting and stopping mode is not used; if the wind turbine generators are required to be started, the wind turbine generators with low hourage are started; and if the wind turbine generators are required to be stopped, the wind turbine generators with high hourage are stopped preferentially. Starting and stopping of the wind turbine generators are controlled in a hourage sequencing mode; a phenomenon that a wind turbine generator is started and stopped frequently can be effectively avoided; and the service lives of the wind turbine generators are prolonged. The method can be used for substation systems running in the wind power plant, and the active power of the substation systems is automatically controlled, so that a suitable control strategy is implemented according to wind power generation running states and running states of the wind turbine generators; control instructions which are issued by a master scheduling station can be accurately traced; and the wind turbine generators can be scheduled fairly.

Description

technical field [0001] The invention relates to an automatic start-stop control method of a wind power unit in a wind farm with the smallest deviation in hours, and belongs to the technical field of power system operation and control including new energy access. Background technique [0002] In recent years, many large-scale wind power bases across the country have been built and put into operation, which has changed the original power supply structure. The impact of wind power on the power grid has gradually increased, from the reactive power and voltage of the local power grid to the peak regulation and frequency regulation of the large power grid. influences. The "Technical Regulations for Connecting Wind Farms to the Power Grid" issued by the State Grid Corporation of China pointed out: "Wind farms should have the ability to regulate active power and be able to control their active power output according to the instructions of the grid dispatching department. In order to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/48
CPCY02E10/76
Inventor 郑太一王彬孙勇吴文传蔡宏毅郭庆来范国英张伯明杨国新孙宏斌曹政潘昭光
Owner STATE GRID CORP OF CHINA
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