Jiejie Zhang, the vice director of department of HVDC, World Power Grid Research Institution, China, says that ‘Although VSC-HVDC as a technology has vast advantages, HVDC circuit breaker technology is a bottleneck in the electric engineering field."
VSC-based HVDC transmission networks, especially those based on the half-bridge MMC topology has no reliable ability to clear faults on the dc-side. Especially in the current implementation of the MTDC project, a partial fault in one converter station results in blackout in all converter stations leading to a reduced ability in avoiding cascading faults.
Developments have progressed in the HVDC circuit breaker technology, such as the ZhangBei Project--the first and largest 550kV DC meshed grid project in the world and is intended to deliver power to Beijing from a variety of renewable sources including wind and solar.
Maxwell said the main challenge of this project is the development of DC circuit breakers with a new switching system capable of opening DC currents.
To meet this need, Maxwell is developing four types of new CONDIS-branded capacitor products for these DC breakers.
"Demand for meshed DC grids is growing and these new developments are opening an increased need for high voltage capacitors," said Gérard Lopez, vice-president and general manager of the high voltage product line at Maxwell, which is headquartered in San Diego.
Lijiang Chi, chief engineer at Chinese energy technology group XJ – which is involved in the project – said the ZhangBei scheme “will supply enough power on the grid to manage the increasing demand for high energy without breakdown of the grid”.
More at HVDC Belt and Road 2019 China Conference
VSC-based HVDC transmission networks, especially those based on the half-bridge MMC topology has no reliable ability to clear faults on the dc-side. Especially in the current implementation of the MTDC project, a partial fault in one converter station results in blackout in all converter stations leading to a reduced ability in avoiding cascading faults.
Developments have progressed in the HVDC circuit breaker technology, such as the ZhangBei Project--the first and largest 550kV DC meshed grid project in the world and is intended to deliver power to Beijing from a variety of renewable sources including wind and solar.
Maxwell said the main challenge of this project is the development of DC circuit breakers with a new switching system capable of opening DC currents.
To meet this need, Maxwell is developing four types of new CONDIS-branded capacitor products for these DC breakers.
"Demand for meshed DC grids is growing and these new developments are opening an increased need for high voltage capacitors," said Gérard Lopez, vice-president and general manager of the high voltage product line at Maxwell, which is headquartered in San Diego.
Lijiang Chi, chief engineer at Chinese energy technology group XJ – which is involved in the project – said the ZhangBei scheme “will supply enough power on the grid to manage the increasing demand for high energy without breakdown of the grid”.
More at HVDC Belt and Road 2019 China Conference
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