Method for controlling operating conditions of D.C. transmission

Details Method for controlling operating conditions of D.C. transmission Method for controlling operating conditions of D.C. transmission

1978-08-31

1981-02-10

Shoop, William M.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 51, H02J 336

Patent

active

042505429

ABSTRACT:
A method for controlling the operating conditions of a DC transmission line includes maintaining a predetermined current value at a first substation by controlling the voltage at that substation, while the voltage at a second substation is controlled to maintain an extreme value of a specific controlled variable dependent on the operating conditions at said second substation and formed as a function of parameters which, when reaching an extreme value, ensures a maximum possible voltage at that substation, while maintaining the predetermined current value. The method is effected via a control circuit including a controlled variable former, an adder, an automatic controlled variable optimizer and a control action discriminator.

REFERENCES:
patent: 3829756 (1974-08-01), Hockstetter
patent: 3906335 (1975-09-01), Watanabe et al.
patent: 3949291 (1976-04-01), Kanngiesser et al.

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