输电网瓶颈的影响

H. Koch
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引用次数: 2

摘要

输电网中的瓶颈问题严重影响着电网的可靠性和输电成本。由于输电线路过载关闭的可能性更大,可靠性降低。更高的成本来自高负荷的架空线路,那里的热极限温度可以达到80摄氏度或90摄氏度,甚至更高。这种热传输损失大大增加了传输成本。瓶颈也是电力传输增加和输电网络升级太慢的结果。在某些情况下,负载可以达到架空线传输能力的极限,即额定电流约为3000 A。为了改善输电网络的瓶颈状况,可以采用一些技术解决方案,如新建或升级架空线路、潮流控制(FACTS)、功率因数补偿、额外的地下输电系统(电缆和GIL)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influences of bottle-necks in the transmission network
Bottle-necks in the transmission network are strongly influencing the net reliability and the cost for transmission. Reliability is reduced because of the more likeliness of shut downs of overloaded transmission lines. Higher cost are coming from the high loaded overhead lines where thermal limit temperatures of 80degC or 90degC or even more can be reached. This thermal transmission losses are increasing the transmission cost significantly. Bottle-necks are also a consequence of increasing power transmission and the too slow upgrade of the transmission network. In some cases the load can reach values which are at the limits of transmission capability of overhead lines, which is at rated currents of about 3000 A. To improve the bottle-neck situation in a transmission network some technical solutions are available like new or upgraded overhead lines, power flow control (FACTS), power factor compensation, additional underground transmission systems (cables and GIL)
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