Static reactive compensator,申请号US19830476958-传众专利搜索

Static reactive compensator

申请公布号：US4503380(A)

申请号：US19830476958

申请日期：1983.02.25

申请公布日期：1985.03.05

申请人：

ASSOCIATED ELECTRICAL INDUSTRIES LIMITED

发明人：THANAWALA, HEMESH L.

分类号：G05F1/44;G05F1/70;H02J3/18;(IPC1-7):G05F1/70

主分类号：G05F1/44

摘要：PCT No. PCT/GB82/00186 Sec. 371 Date Feb. 25, 1983 Sec. 102(e) Date Feb. 25, 1983 PCT Filed Jun. 25, 1982 PCT Pub. No. WO83/00071 PCT Pub. Date Jan. 6, 1983.A polyphase static reactive compensator comprising a main saturated reactor (SR1) connected in series with a number of smaller saturated reactors (SR2-4) of graded voltage rating. The smaller reactors are shunted by respective thyristor switches (TV2-TV4) so that selected combinations of reactors can be obtained to provide control of the overall operating voltage. The slope of the overall characteristic can be controlled by switching through successive reactor combinations. Further refinement of the overall characteristic can be obtained by phase control of the smallest reactor (SR4) thyristor switches (TV3) or, in an alternative form of the invention, by the use of a single reactor (SR1) having a primary winding, a closed mesh secondary winding (19) and a phase-controlled auxiliary reactor (AR, ACR) constituting a load on the closed mesh winding. The two forms of the invention may be combined in one equipment.