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Doubly-fed fan wind power plant frequency modulation capacity evaluation method considering multiple frequency modulation control strategies

A control strategy and frequency modulation capacity technology, applied in wind power generation, electrical components, circuit devices, etc., can solve the problems of a single wind turbine frequency modulation control strategy, failure to fully utilize the frequency modulation capacity of wind turbines, and conservative evaluation results

Pending Publication Date: 2020-10-16
杨正清
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Problems solved by technology

Scholars have proposed an evaluation method for the virtual inertia capability of wind farms, but the above method only considers a single wind turbine frequency modulation control strategy, and fails to give full play to the maximum frequency modulation ability of wind turbines. The evaluation results are undoubtedly conservative

Method used

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  • Doubly-fed fan wind power plant frequency modulation capacity evaluation method considering multiple frequency modulation control strategies
  • Doubly-fed fan wind power plant frequency modulation capacity evaluation method considering multiple frequency modulation control strategies
  • Doubly-fed fan wind power plant frequency modulation capacity evaluation method considering multiple frequency modulation control strategies

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specific Embodiment

[0121] We use the proposed method to evaluate the frequency modulation capacity of the wind farms shown. Figure 5 There are 100 wind turbines in the shown wind farm. The overall wind farm is arranged in a rectangular shape. The hub height of the wind turbines is 80m, and the distance between each wind turbine is 500m. The wind turbine type is W2000-87 unit produced by Shanghai Electric Company. Figure 6 Specific fan parameters are given. Figure 7 The corresponding relationship between wind speed and output power under the normal state of the fan is given.

[0122] Adopt the inventive method to carry out simulation calculation to embodiment, result is as follows:

[0123] Figure 8 The calculation results of joint probability distribution of wind speed for four kinds of predicted wind speeds are given, and the probability that any wind turbine in a wind farm in a certain predicted wind speed will be in the range of a certain initial wind speed and end wind speed when parti...

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Abstract

The invention discloses a doubly-fed fan wind power plant frequency modulation capacity evaluation method considering multiple frequency modulation control strategies. According to the method, firstly, the operation condition difference caused by different space-time distribution of each fan in a wind field is simulated, the optimal frequency modulation control strategy of the fan under differentoperation conditions is determined, modeling of different frequency modulation strategies of a fan under different wind speeds is completed, meanwhile, the maximum frequency modulation capacity of various control strategies under the corresponding wind speed condition is evaluated, and finally the maximum frequency modulation capacity evaluation result of the whole wind power plant is obtained ina weighted summation mode on the basis of the wind speed distribution probability. The method aims to quantitatively evaluate the frequency modulation capability of the fan based on the level of the wind field, and can effectively establish the relationship between the active control capability of the fan level and the system scheduling level. And the corresponding evaluation result can be used asa powerful reference basis for system scheduling or wind power plant energy storage capacity configuration.

Description

technical field [0001] The invention relates to a method for evaluating the frequency modulation capacity of a wind farm, in particular to a method for evaluating the frequency modulation capacity of a double-fed fan wind farm considering multiple frequency modulation control strategies. Background technique [0002] With the continuous expansion of the scale of wind power access in the power system, the dispatching problems and operating pressure of the power system have become increasingly prominent. The system dispatching department has to dispatch more frequency regulation capacity of traditional units to ensure the smooth consumption of wind power. On the one hand, this increases the operating pressure of traditional units and the complexity of system scheduling operation; on the other hand, it reduces or offsets the economic and environmental benefits brought by wind power grid integration. With the improvement of wind turbine control technology, wind turbines can also...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/48G06F17/18
CPCH02J3/381H02J3/48G06F17/18H02J2203/20H02J2300/28Y02E10/76
Inventor 杨正清何颖梅陈宇马伟钟宇峰耿强强丁冬钱礼明何小良张晓玲
Owner 杨正清
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