| 一种求解同电压等级交流架空线路并行间距的方法 |
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| 引用本文：周文武1,施西2,李小亭1,江岳1,张小力1,朱永平1.一种求解同电压等级交流架空线路并行间距的方法[J].电网与清洁能源,2020,36(2):62~67 |
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| 基金项目:国家电网公司总部科技项目资助（GY 71-17-018） |
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| 中文摘要:为求解同走廊同电压等级交流线路的并行间距，考虑架空线路并行时的电磁环境、风偏下的安全间隙及施工控制距离，得出多回交流线路并行间距的经验公式，并分析公式在理论和工程运用中的正确性和适用性。结果表明，并行间距由地面工频电场强度或电气安全距离控制，并可按经验公式确定。工程运用中，经验公式在各电压等级常规杆塔规划下均适用，在个别大档距下，需校核塔位异步布置时的电气安全距离，同塔双回路并行间距可借鉴此经验公式，110~330 kV电压等级线路并行间距可根据实际情况缩小。 |
| 中文关键词:同走廊交流线路 并行间距 电磁环境 经验公式 |
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| A Calculation Method of Parallel Spacing between HVAC Overhead Transmission Lines in Same Voltage Grade |
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| Abstract:In order to solve the parallel spacing of AC lines at the same voltage level in the same corridor， the empirical formula on parallel spacing under multi-circuit parallel transmission lines is obtained by considering the electromagnetic environment， the safety clearance under windage yaw and the construction control distance when the overhead lines are parallel， and the correctness and applicability of the formula are analyzed in theory and engineering application. The results show that the parallel spacing is controlled by ground power frequency electric field intensity or electrical safety distance and can be determined by the empirical formula. In engineering application， the empirical formula is applicable to the planning of conventional poles and towers at various voltage levels. In a few cases of large spans， the influence of horizontal distances between the phase conductors under asynchronous tower arrangement should be checked. The parallel spacing between double circuits on the same tower can also use this formula and the parallel spacing for 110~330 kV lines can be reduced according to the actual conditions. |
| keywords:multiple circuit AC transmission lines in the same corridor parallel spacing electromagnetic environment empirical formula |
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