Method and apparatus for recognizing defects in a triggering sys

Details Method and apparatus for recognizing defects in a triggering sys Method and apparatus for recognizing defects in a triggering sys

1993-05-18

1995-01-24

Voeltz, Emanuel T.

Electricity: power supply or regulation systems

For reactive power control

Using impedance

363 54, 361 92, G05F 170, G05F 144

Patent

active

053845285

ABSTRACT:
A method and a device for recognizing defects in a triggering system of a controlled series compensator. An intervention is made in the closed-loop control of the controlled series compensator on the basis of an impedance differential (.DELTA.Z) determined from a setpoint impedance (Z.sub.S1, Z.sub.S2) and from an effective impedance (Z.sub.i) calculated from system variables (i.sub.L,u.sub.C), and in dependence upon the voltage level of a measured conduction current (i.sub.L). When the conduction currents (i.sub.L) are smaller than a limiting value (i.sub.LG), the firing is blocked in the branches, and when the conduction currents (i.sub.L) are greater than a limiting value (i.sub.LG), a firing-angle signal (S.sub..alpha.S) is generated, through which means the valve (Th1, Th2) can be protectively fired. Thus, one is able to recognize defects in the triggering system of the controlled series compensator by applying system variables (i.sub.L,u.sub.c), and this series compensator is able to be brought into such a state that disadvantages are avoided for the network operation, through which means the availability of the system and the quality of the compensation are increased.

REFERENCES:
patent: 4999565 (1991-03-01), Nilsson
IEEE Transactions on Power Delivery, vol. 4, No. 1 Jan. 1989, New York, US, pp. 241-247, N. Sadanandan et al.: Miccroprocessor-based Capacitor Bank Ccontrol and Protection System.
Ekektrie, vol. 34, No. 3, Mar. 1991, Berlin, DE, pp. 88-90, G. Thumm et al.: Geregelte Parallel-und Reihenkompensation.
IEE Meeting, 1991, London, UK, N. Christl et al.: Power System Studies and Modelling for the Kayenta 230 KV Substation Advanced Series Compensation, pp. 33-37.
Cigre Tagung, Summer 1992, N. Christl et al.: Advanced Series Compensation (ASC) with Thyristor Controlled Impedance, pp. 1-10.
EPRI Workshop, Nov. 14-16, 1990, Cincinnati, Ohio, Siemens, Munich, Germany: Advanced Series Compensation with Variable Impedance, 13 pages.

Affiliated with

Also associated with

Rating

Method and apparatus for recognizing defects in a triggering sys does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for recognizing defects in a triggering sys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for recognizing defects in a triggering sys will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1470153