When a small system is in on-load operation in the early stage of black start, unit paralleling may fail due to reverse power protection.

黑启动初始阶段，小系统空载运行的情况下，由于逆功率保护而往往发生机组并车失败问题。

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The biggest starting current unit for rated current operation unit nearly 1.5 times, which reduces the unit to start the impact of the power grid.

机组的最大启动电流近为机组额定运行电流的1.5倍，从而降低了机组启动对电网的冲击。

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The optimal unit start-up strategy of modern power system restoration is a complex, multi-stage decision optimization problem.

现代电力系统恢复控制中的机组优化启动问题是一个复杂的多阶段决策优化问题。

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The 787 has two identical lithium-ion batteries, one of which is located toward the front of the plane and powers cockpit electrical systems, the other toward the rear and used to start an auxiliary power unit while the plane is on the ground, among other functions.

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The ES is critical to aircraft operation it distributes power around the aircraft from the engines and the Auxiliary Power Unit (APU) which provides the power to operate the air conditioning and to start the engines at the gate to all the systems requiring electricity.

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