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    • 2. 发明申请
    • Electrical Generation Protection System
    • 发电保护系统
    • US20090160260A1
    • 2009-06-25
    • US12226863
    • 2007-05-02
    • Christopher Graham Bright
    • Christopher Graham Bright
    • H02J3/42
    • H02J3/38Y10T307/724Y10T307/735
    • Distributed generation systems incorporate a distribution network and typically a number of distributed generators. It is possible that power islands may be created in substations incorporating a generator when that substation and generator is isolated from the distribution network by a circuit breaker. A problem arises when the power island is re-connected to the distribution network when the phase of electrical power supply in the previous power island is not synchronised with the power supply on the distribution network. Identifying such an out of phase nature is achieved utilising application of test reactances, both capacitative and inductive, across the whole distribution network such that such test reactances are substantially unbalanced within a particular substation and in particular a distribution path for a generator so that there is a test reactance load imbalance which will identify out of phase operation and therefore control activation of the circuit breaker.
    • 分布式发电系统采用分布式网络,通常采用多个分布式发电机。 当该变电站和发电机通过断路器与配电网络隔离时,可能在并入发电机的变电站中产生功率岛。 当前一个电源岛的电源相位与配电网络上的电源不同步时,电源岛被重新连接到配电网络时出现问题。 通过在整个分布网络中应用电容和电感的测试电抗来确定这种异相性质,使得这种测试电抗在特定变电站内基本上不平衡,特别是用于发电机的分配路径, 测试电抗负载不平衡,它将识别异相操作,从而控制断路器的启动。
    • 4. 发明授权
    • Electrical generation protection system
    • 发电保护系统
    • US08080902B2
    • 2011-12-20
    • US12226863
    • 2007-05-02
    • Christopher Graham Bright
    • Christopher Graham Bright
    • H02J1/00
    • H02J3/38Y10T307/724Y10T307/735
    • Distributed generation systems incorporate a distribution network and typically a number of distributed generators. It is possible that power islands may be created in substations incorporating a generator when that substation and generator is isolated from the distribution network by a circuit breaker. A problem arises when the power island is re-connected to the distribution network when the phase of electrical power supply in the previous power island is not synchronized with the power supply on the distribution network. Identifying such an out of phase nature is achieved utilizing application of test reactances, both capacitative and inductive, across the whole distribution network such that such test reactances are substantially unbalanced within a particular substation and in particular a distribution path for a generator so that there is a test reactance load imbalance which will identify out of phase operation and therefore control activation of the circuit breaker.
    • 分布式发电系统采用分布式网络,通常采用多个分布式发电机。 当该变电站和发电机通过断路器与配电网络隔离时,可能在并入发电机的变电站中产生功率岛。 当前一个电源岛的电源相位与配电网络上的电源不同步时,电源岛被重新连接到配电网络时出现问题。 通过在整个分布网络中应用电容和电感的测试电抗来确定这种异相性质,使得这种测试电抗在特定变电站内基本上不平衡,特别是用于发电机的分配路径, 测试电抗负载不平衡,它将识别异相操作,从而控制断路器的启动。