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Transmission Line Protection
PCS-9583 Static Synchronous Compensator
The static synchronous compensator (STATCOM) is currently the most advanced technology in reactive power compensation. It is based on a voltage-source converter and can act as a source. The STATCOM can automatically output inductive or capacitive power, and follow the demand on load side or in the power system network.
NR Electric’s PCS-9583 STATCOM adopts a cascading scheme of multi-level topology. This topology consists of several H-bridge power units with monopole multiplier modulation to achieve three-level output on the AC side. Each phase uses the carrier phase modulation method to obtain better voltage output waveform with more levels. The use of industrial grade components significantly improves the entire system’s reliability. The multi- level output voltage has low harmonics, which can effectively reduce the voltage distortion at the interconnection point and decrease the harmonic current flowing into the outside grid.
NR Electric's H-bridge cascading STATCOM is composed of power units, reactors, starting units and control units. Control units regulate the control of normal operations, running mode switching and data exchange with the substation automation system. The advantages are shown as follow:
- Faster response time
- High voltage flicker reduction
- Wide operating range
- Various compensation functions
- Lower harmonic
- Small site space
The H-bridge cascading STATCOM provides direct dynamic reactive power compensation for HV busbar. The compensation is composed by a series cascading connections of full-controlled converter bridges.