Electricity: single generator systems – Automatic control of generator or driving means – Antihunting or rate of change
Patent
1986-04-04
1987-10-20
Beha, Jr., William H.
Electricity: single generator systems
Automatic control of generator or driving means
Antihunting or rate of change
307102, 322 58, 361 20, 361113, H02P 914
Patent
active
047016892
ABSTRACT:
The present invention relates to an automatic device for depressing low frequency oscillation of power system. It consists of an electronic circuit incorporated in the original excitation regulator of a synchronous generator. This circuit can turn the input deviation of voltage .DELTA.V into simulating state variable deviations of angular frequency .DELTA..omega., of power .DELTA.P and of power angle .DELTA..delta., and then outputs the sum of them according to the principle of optimal control. With the device of the present invention, the output capability of a remote power station may double, a whole set of measurement and feedback devices may be spared and the distortions in measurement may be avoided. The present device has further advantages of being small in size, cheap in cost, easy to establish and high in reliability.
REFERENCES:
patent: 1376400 (1921-05-01), Chubb
patent: 3916291 (1975-10-01), Raczkowski
patent: 4080559 (1978-03-01), Wright et al.
patent: 4377780 (1983-03-01), Bjorklund
patent: 4412171 (1983-10-01), Kaufhold
Dake Huang
Guojiu Li
Quanzhong Sun
Xianzhi Chen
Yongli Zhang
Beha Jr. William H.
Huazhong Institute of Technology
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