Method for controlling operating conditions of d.c....

Details Method for controlling operating conditions of d.c.... Method for controlling operating conditions of d.c....

H - Electricity

02

M

321/22

H02M 5/42 (2006.01) H02J 3/36 (2006.01)

Patent

CA 1132193

METHOD FOR CONTROLLING OPERATING CONDITIONS OF D.C. TRANSMISSION LINE AND CONTROL DEVICE FOR EFFECTING SAME ABSTRACT OF THE DISCLOSURE According to the invention, the method for controlling operating conditions of a d.c. transmission line consists in maintaining a predetermined current value at a first substa- tion by controlling voltage at that substation, while at a sec- ond substation voltage is controlled to maintain an extreme value of a certain controlled variable dependent on the opera- ting conditions at said second substation and formed as a func- tion of parameters which, when reaching an extreme value, en- sures a maximum possible voltage at that substation, while maintaining the predetermined current value. The method is effected with the aid of a control device comprising a control- led variable former, an adder, an automatic controlled variable optimizer and a control action discriminator.

309485

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