Control device for grid-connection point of photovoltaic power station preventing inverted power transmission

• Main Authors: SUN WENHUA, YANG ZHENGPING, QIN YONGMING, ZHU GEXUAN
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2014
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The utility model provides a control device for a grid-connection point of a photovoltaic power station preventing inverted power transmission. The device comprises a closing coil HJ, a first normally open contact HJ1, a second normally closed contact FJ2, a remote control closing contact K1, a closing control circuit, and an opening control circuit. The closing control circuit is formed by an end of a manual closing button AH and a first normally closed switch position auxiliary contact DL1. The opening control circuit is formed by an opening coil FJ, a remote control opening contact K2, a first normally closed contact HJ3, a manual opening button AF and a second normally open switch position auxiliary contact DL2. The structure is characterized by also comprising a locking contact BS and a controller connected in series between the first normally closed switch position auxiliary contact DL1 and the closing coil HJ. The locking contact BS controller is electrically connected with the locking contact BS by co