DISTRIBUTED GENERATION SYSTEM AND POWER SYSTEM STABILIZING METHOD
First Claim
1. A distributed generation system, comprising:
- a distributed generation connected with a power system,a static var compensator connected with the power system at a point of connection between the distributed generation and the power system, andcontrol means for detecting an output of the distributed generation and for controlling the static var compensator according to the detected output in such a manner that a voltage fluctuation developed at the point of connection attributable to the distributed generation is compensated.
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Abstract
A distributed generation system that can suppress a voltage fluctuation caused by a distributed generation by an apparatus of a small power capacity in the distributed generation itself and stabilize the power system voltage without inserting interharmonic voltage or current into the power system and without interference among a plurality of distributed generations. Parameter α(t) varying with time is estimated based on fluctuating component ΔP of the active power P generated by the distributed generation and the voltage fluctuating component ΔV attributable to the distributed generation developed at the point of connection between the distributed generation and power system. The distributed generation produces reactive power Q=−αP or Q=−αΔP, to thereby suppresses only the voltage fluctuation of the power system attributable to the distributed generation.
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Citations
7 Claims
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1. A distributed generation system, comprising:
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a distributed generation connected with a power system, a static var compensator connected with the power system at a point of connection between the distributed generation and the power system, and control means for detecting an output of the distributed generation and for controlling the static var compensator according to the detected output in such a manner that a voltage fluctuation developed at the point of connection attributable to the distributed generation is compensated. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification