Four-quadrant power grid simulator connected in parallel through high-speed optical fibers

• Main Authors: GUO ZIYONG, WANG JIHAO, SUN XIANDA, ZHOU XIAOLIANG, GAO JINXIN, YANG YANG, WANG FEIYI, WEI HONGSHI, ZHANG KUN
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2022
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

The utility model provides a four-quadrant power grid simulator connected in parallel through a high-speed optical fiber, which comprises a first power grid simulator and a second power grid simulator, the input ends of the first power grid simulator and the second power grid simulator are connected with an AC 10kV incoming bus, and the output ends of the first power grid simulator and the second power grid simulator are respectively connected with a tested system; the power grid simulator comprises an input circuit breaker, a phase-shifting transformer, a cascade frequency conversion power unit, an output filter, an output circuit breaker and a step-down transformer. The control ends of the cascade frequency conversion power units of the two power grid simulators are connected with each other through a high-speed optical fiber. And the output ends of the output filters of the two power grid simulators are connected through an output parallel circuit breaker QF3. The two power grid simulators are used for par