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ABB has been selected by power utility State Grid of China Corp. (SGCC) to supply high-voltage products for its 220 kV smart substation demonstration project. According to ABB, the project is aimed at deploying and integrating intelligent solutions to enhance the efficiency and reliability of the electricity network.

It is the first time that ABB's high-voltage disconnecting circuit breaker (DCB) is being installed in China. Conventional air-insulated, high-voltage switchgear consists of the circuit breaker and disconnector as separate components, which require individual installation space. ABB says the DCB integrates the function of a disconnector within the circuit breaker, thus dispensing with the need for two separate products.

The DCBs for this project have additional condition monitoring and other control features incorporated to provide additional “intelligence” at the secondary control level, complementing the intelligence at the primary level, ABB adds.

"This demonstration project contributes to China’s vision of a stronger and smarter grid that is more intelligent, efficient and reliable,” says Giandomenico Rivetti, head of ABB’s High Voltage business. “We have worked closely with SGCC on many global innovations over the years and are pleased to continue this tradition.”




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