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铜价上涨背影下高压开关柜母线设计与制造

Design and Manufacturing of Busbars for High-Voltage Switchgear Under Rising Copper Prices

  • 摘要: 为解决铜价快速上涨背景下,高压开关柜母线铜材消耗大、成本居高不下的问题,文章提出一种兼顾经济性与可靠性的设计与制造策略。结合高压开关柜母线的运行特性,分析了不同截面母线的性能差异、母线系统布置的优化以及接地母线的合理选型,并通过数据对比与标准核算验证了该策略的可行性。管型母线相较于矩形母线可减少约40%的附加损耗,4000 A开关柜采用管型母线每台可节省铜材成本约6270元;合理设计接地母线可避免铜材浪费,例如接地回路采用3 × 20 mm 铜排即可满足安全要求。通过优化母线截面、改进布置方式、精准选型接地母线,可在保证开关柜运行可靠性的前提下,显著降低铜材消耗与制造成本,适应铜价高位运行的现状。

     

    Abstract: To address the problems of high copper consumption and persistently high costs of busbars in high voltage switchgear amid the rapid rise in copper prices, this paper proposes design and manufacturing strategies that balance cost effectiveness and reliability. Based on the operating characteristics of busbars in high voltage switchgear, the performance differences among busbars with different cross sections, the optimization of busbar system layout, and the rational selection of grounding busbars are analyzed. The feasibility of the proposed strategies is verified through data comparison and calculations based on relevant standards. The results show that tubular busbars can reduce additional power loss by 40% compared with rectangular busbars. For 4,000 A switchgear, the use of tubular busbars can save CNY 6,270 in copper cost per unit. Rational design of grounding busbars can avoid copper waste. For example, a 3 × 20 mm copper busbar in the grounding circuit can meet safety requirements. By optimizing the busbar cross section, improving the layout, and accurately selecting grounding busbars, copper consumption and manufacturing costs can be significantly reduced while ensuring the operational reliability of switchgear, making the design suitable for the current high copper price environment.

     

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