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

Active Publication Date: 2019-08-23
CORONA WIND EQUIP BEIJING CO LTD +1
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  • Application Information

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Problems solved by technology

The above two frequency modulation control methods are only control strategies for full

Method used

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

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[0069] The present invention will be further described below with reference to the drawings and specific embodiments.

[0070] figure 1 It is a schematic diagram of the primary frequency modulation coordinated control system of the present invention. Such as figure 1 As shown, the control system of the present invention includes a proportional-differential regulator module, a filter module, a target active power calculation module, and an optimal rotation speed calculation module, and each module is connected in series according to the signal flow direction. The proportional-differential regulator module calculates the additional active reference value ΔP of the primary frequency modulation f , Add the calculated additional active power reference value ΔP f Sent to the filter module; filter module pair ΔP f Carry out filtering process to separate low frequency signal ΔP fL And high frequency signal ΔP fH , And this low-frequency signal ΔP fL And high frequency signal ΔP fH Sen...

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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.

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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Application Information

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IPC IPC(8): H02J3/38H02J3/32H02J3/24H02J3/48
CPCH02J3/382H02J3/32H02J3/24H02J3/48H02J2203/20
Inventor 徐浩许洪华吕佃顺冯成邵桂萍武鑫
Owner CORONA WIND EQUIP BEIJING CO LTD
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