Primary frequency modulation coordination control system for full power variable speed pumping storage unit

A pumped storage unit and a coordinated control system technology, applied in the direction of reducing/preventing power oscillation, AC network circuits, electrical components, etc., can solve problems such as lack of coordination and optimal control
CN110165702AActive Publication Date: 2019-08-23CORONA WIND EQUIP BEIJING CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CORONA WIND EQUIP BEIJING CO LTD
Publication Date
2019-08-23

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Abstract

The invention relates to a primary frequency modulation coordination control system for a full power variable speed pumping storage unit. The system includes a proportional differential regulator module, a filter module, a target active power calculation module and an optimal speed calculation module, wherein the modules are connected in series in the signal flow direction, the proportional differential regulator module calculates an additional active reference value deltaPf of primary frequency modulation of the full power variable speed pumping storage unit, the filter module performs filtering processing of the additional active reference value deltaPf of primary frequency modulation, a low frequency signal deltaPfL and a high frequency signal deltaPfH are separated, a first active reference value 1 and a second active reference value 2 of the full power variable speed pumping storage unit are calculated by the target active calculation module according to the low-frequency signal deltaPfL and the high-frequency signal deltaPfH separated by the filter module, and the optimal running speed of the full power variable speed pumping storage unit is calculated by the optimal speed calculation module according to the first active reference value 1 and transmitted to the full power variable speed pumping storage unit as a speed reference value of a governor of the full power variable speed pumping storage unit.
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Description

technical field

[0001] The invention relates to a control system of a full-power variable-speed pumped storage unit. Background technique

[0002] The large-scale development of wind power, photovoltaic and other renewable energy power generation systems has brought enormous pressure to the frequency regulation and peak regulation of the power system. The power system needs to be equipped with pumped storage units of a certain scale to compensate for changes in active power and adapt to the large-scale development of new energy. The full-power variable-speed pumped storage unit can realize full-range changes in speed, has strong power regulation capabilities, can effectively improve the frequency of the grid, suppress fluctuations in renewable energy generation, and solve the stability problems faced by the grid.

[0003] The full-power variable-speed pumped storage unit is connected between the motor-generator stator and the grid with a converter with the same power as the...

Claims

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