Active power control method of wind power plant
A control method and active power technology, which is applied in the field of active power control of wind farms, can solve problems such as limited fan power, achieve the effects of reducing power loss, avoiding low pass rate, and increasing fan power
Inactive Publication Date: 2020-10-27
山西粤电能源有限公司
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Problems solved by technology
[0006] In order to overcome the deficiencies in the prior art, the present invention provides an active power control method for wind farms, which can solve the problem of limited power of wind turbines caused by defects in the existing AGC system power distribution method
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[0035] A wind farm has two phases of wind turbines, the first phase has 24 2.0MW wind turbines with a capacity of 48MW, cluster control; the first phase has 33 1.5MW wind turbines with a capacity of 49.5MW, and single control. Then the installed capacity of the wind farm is 97.5MW, the adjustable upper limit of the wind farm is set to 97.5MW, 5% of the installed capacity is about 5MW, and the actual active power of the wind farm at this time is 60MW.
[0036] If the dispatching target command is 100MW at this time, the dispatching target value is greater than or equal to the adjustable upper limit of the AGC system of 97.5MW, then the AGC system issues a full command to the wind turbines, and 24 centralized control wind turbines get a power allocation value of 48MW; 33 single-control wind turbines 1.5MW wind turbine, the power allocation value of each wind turbine is 1.5MW.
[0037] If the target command for dispatching at this time is 70 MW, the target command is less than th...
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The invention belongs to the technical field of wind power plant power control, and particularly relates to an active power control method of a wind power plant, which comprises the following steps: enabling an AGC system to receive a target value and compare the target value with an adjustable upper limit, and sending a full instruction to a fan cluster if the target value is greater than or equal to the adjustable upper limit; if the actual active power of the wind power plant is smaller than the adjustable upper limit, comparing the actual active power of the wind power plant with 5% of thesum of the installed capacities of the wind power plant, and if the actual active power of the wind power plant is greater than or equal to the sum of the installed capacities of the wind power plant, issuing a power instruction I to the fan cluster; if the sum is smaller than the sum of the actual active power of the wind power plant and 5% of the installed capacity of the wind power plant, comparing with the actual active power of the wind power plant; if so, issuing a power instruction III to the fan cluster; enabling the AGC system to determine that the power is dispatched and limited, and displays 'power limitation'. The method solves the problem of fan power limitation caused by AGC system power distribution method defects, and can be widely applied to various wind power plant places.
Description
technical field [0001] The invention belongs to the technical field of wind farm power control, and in particular relates to a method for controlling active power of a wind farm. Background technique [0002] In the existing active power control technology of wind farms, the automatic generation control system (AGC system) usually distributes the fan load according to the predicted output value of the fan. If the fan fails to reach the power distribution value, the AGC system will reduce The fan load distribution is a control method for adding excess load to other fans whose power distribution value is smaller than the actual power value. The power distribution scheme is intended to make a reasonable distribution of power, and distribute the power to the wind turbines with strong generating capacity as much as possible. [0003] However, in actual operation, it is found that this power allocation scheme has defects. The AGC system will always reduce the load of the fans who...
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IPC IPC(8): H02J3/48H02J3/38
CPCH02J3/48H02J3/381H02J2300/28Y02E10/76
Inventor 刘宏亮刘宁宁仇祖得陈哲闫旭张孝鹏许世英季梦泽李艺桥
Owner 山西粤电能源有限公司