Generator power oscillation damping controller based on energy storage device

A technology for generator power and energy storage devices, which is applied in the direction of reducing/preventing power oscillations, and can solve problems such as technical solutions that have not yet appeared

Inactive Publication Date: 2014-09-10
WUHAN UNIV
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  • Abstract
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Problems solved by technology

Therefore, although the energy storage device has a variety of power system applications, its normal operation and effective utiliz

Method used

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  • Generator power oscillation damping controller based on energy storage device
  • Generator power oscillation damping controller based on energy storage device
  • Generator power oscillation damping controller based on energy storage device

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Embodiment Construction

[0048] The technical solution of the present invention will be described in detail below in conjunction with the drawings and embodiments.

[0049] The embodiment provides a generator power oscillation damping controller based on an energy storage device. The controller adopts a dual-CPU cooperative processing hardware structure with real-time response characteristics. Through the independent operation of input state acquisition and damping control, the controller's The control period is reduced to the maximum value of the sampling period and the control program period. The controller takes the steady-state deviation of the output power of the generator as input, and uses a nonlinear proportional-integral-derivative controller to generate a power regulation control command for the energy storage device. The energy storage device suppresses the power oscillation of the generator.

[0050] In the aforementioned energy storage device-based generator power oscillation damping cont...

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Abstract

The invention relates to a generator power oscillation damping controller based on an energy storage device. The generator power oscillation damping controller comprises two micro processing units MCU1 and MCU2, wherein the MCU1 is used for collecting input states, and the MCU2 is used for performing damping control which includes collecting the output power of generators collected by the MCU1, obtaining preset active regulating signals of the power regulation system of the energy storage device and outputting the same. The controller utilizes a nonlinear proportion-integral-differential controller to generate a power regulation command for inhibiting power oscillation of the generator, the control strategy has the characteristic of being easy to implement and the controller has the characteristic of good robustness; through the cooperative work of the two CPU, real time of the controller is effectively improved, execution cycle of the complex control algorithm is greatly shortened; other applications of the energy storage device in the electric system can also be achieved by modifying the control strategy, and the generator power oscillation damping controller has the characteristics of simple structure and easiness in implementation in engineering.

Description

technical field [0001] The invention relates to the technical field of power system power oscillation damping control, in particular to a controller that uses dynamic unbalanced power compensation of an energy storage device to provide oscillation damping for the power system to suppress generator power oscillation. Background technique [0002] Under the situation of my country's west-to-east power transmission, north-south mutual supply, and national networking, the possibility of low-frequency power oscillations occurring on long-distance, heavy-duty transmission lines or connecting lines between regional power grids will greatly increase. When low-frequency power oscillation occurs in the power system, the power and power angle of the generator will continue to oscillate for a long time at a frequency of 0.2-2.5Hz, and because the rotors of the units involved in the oscillation will swing relative to each other, the power of the transmission line will be transmitted back ...

Claims

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Application Information

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IPC IPC(8): H02J3/24
Inventor 宋萌彭晓涛王达达胡南南周勇周歧林张彬谷志华
Owner WUHAN UNIV
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