BS PD IEC/TS 60815-4:2016是一项技术规范，适用于 带绝缘的绝缘子所需直流统一爬电距离的确定 关于污染。为避免过度过度或欠设计，现有运行经验 应进行比较，最终可由 供应商和客户之间的协议。玻璃适用于瓷绝缘子；带有HTM或非HTM外壳的复合绝缘子和混合绝缘子。IEC 60815的这一部分给出了达成知情协议的具体指南和原则 判断特定绝缘子在特定污染环境中的可能行为。 IEC 60815本部分的结构和方法与第1部分中的说明类似， 但适用于受到污染的高压直流绝缘的具体问题。本技术规范的目的是为用户提供简化的方法:识别可能影响选择和设计过程的直流应用特有的问题；根据测量结果确定等效直流现场污染严重程度（SPS），并进行校正 静电效应、直径、污染分布和成分；确定不同候选绝缘溶液的参考USCD，考虑 账户材料、维度和风险因素；评估不同绝缘子外形的适用性； 如有必要，讨论验证所选绝缘子性能的适当方法 必修的；这一简化流程旨在用于以下情况: 现有的直流系统不完整或不可用。简化的设计方法可能会产生一个超出物理约束的解决方案 这个项目的一部分。对于此类情况，更精确的方法（例如使用统计方法）如下: 在CIGRE d.c.指南[1]中给出。在极端情况下，例如对于异常严重的现场 条件、替代解决方案，如改变线路路线、更换变流器 可能需要考虑车站或使用室内直流站。 交叉引用:IEC/TS 61245IEC/TS 60815-1:2008IEC/TS 60815-2IEC/TS 60815-3IEC/TS 62073 IGRE C4。303 CIGRE工作组33.04.01购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS PD IEC/TS 60815-4:2016, which is a Technical Specification, is applicable as first approach for the determination of the required d.c. Unified Specific Creepage Distance for insulators with respect to pollution. To avoid excessive over or under design, existing operation experience should be compared and eventually additional appropriate tests may be performed by agreement between supplier and customer.It is applicable to:Glass and porcelain insulators;Composite and hybrid insulators with an HTM or non-HTM housing.This part of IEC 60815 gives specific guidelines and principles to arrive at an informed judgement on the probable behaviour of a given insulator in certain pollution environments.The structure and approach of this part of IEC 60815 are similar to those explained in Part 1, but adapted for the specific issues encountered with polluted HV d.c. insulation.The aim of this Technical Specification is to give the user simplified means to:Identify issues specific to d.c. applications that can affect the choice and design process;Determine the equivalent d.c. Site Pollution Severity (SPS) from measurements, correcting for electrostatic effects, diameter, pollution distribution and composition;Determine the reference USCD for different candidate insulating solutions, taking into account materials, dimensions and risk factors;Evaluate the suitability of different insulator profiles;Discuss the appropriate methods to verify the performance of the selected insulators, if required;This simplified process is intended to be used when comparable operational experience from existing d.c. system is incomplete or not available.The simplified design approach might result in a solution that exceeds the physical constraints of the project. More refined approaches for such cases, e.g. using a statistical approach, are given in the CIGRE d.c. guidelines [1]. In extreme cases, e.g. for exceptionally severe site conditions, alternative solutions such as changing the line route, relocation of converter stations or using an indoor d.c. yard may need to be considered.Cross References:IEC/TS 61245IEC/TS 60815-1:2008IEC/TS 60815-2IEC/TS 60815-3IEC/TS 62073CIGRE C4.303CIGRE Taskforce 33.04.01All current amendments available at time of purchase are included with the purchase of this document.