架空电力线路和高压设备的无线电干扰特性第2部分:测量方法和极限测定程序

[中文适用范围]： CISPR 18@的这一部分是一份技术报告@，适用于来自架空电力线和高压设备的无线电噪声，这些噪声可能对无线电接收造成干扰。本出版物涵盖的频率范围为 0@15 MHz 至 3 GHz。建议采用确定电源线和设备无线电噪声场限值的一般程序@以及作为示例的典型值@和测量方法。有关限制的条款集中于低频和中频段，并且只有在这些频段中，才能获得基于既定实践的充足证据@。由于测量方法和该频段问题的某些其他方面尚未完全解决，因此没有给出保护 30 MHz 至 3 GHz 频段内无线电接收的限制示例。现场测量和服务经验表明，正常工作时，频率高于300 MHz的电源线噪声水平很低，不太可能对电视接收造成干扰。作为示例给出的限制值经过计算，以便在可能最不利的条件下，为用于调幅无线电广播@的无线电频段内的适当发射机的认可服务区边界处的广播接收提供合理程度的保护一般都会遇到。这些限制旨在为线路规划阶段以及国家标准或其他规范提供指导，以便在施工后及其使用寿命期间检查线路的性能。用于检查是否符合限值的测量设备和方法应符合相应的 CISPR 规范@，例如基本标准系列 CISPR 16@ 参见[1]1。 [外文原描述]： CISPR TR 18-2:2017 which is a Technical Report, applies to radio noise from overhead power lines and high-voltage equipment which may cause interference to radio reception. The frequency range covered by this publication is 0,15 MHz to 3 GHz. A general procedure for establishing the limits of the radio noise field from the power lines and equipment is recommended, together with typical values as examples, and methods of measurement. The clause on limits concentrates on the low frequency and medium frequency bands and it is only in these bands where ample evidence, based on established practice, is available. No examples of limits to protect radio reception in the frequency band 30 MHz to 3 GHz have been given, as measuring methods and certain other aspects of the problems in this band have not yet been fully resolved. Site measurements and service experience have shown that levels of noise from power lines at frequencies higher than 300 MHz in normal operation are so low that interference is unlikely to be caused to television reception. The values of limits given as examples are calculated to provide a reasonable degree of protection to the reception of broadcasting at the boundary of the recognized service areas of the appropriate transmitters in the radio frequency bands used for a.m. radio broadcasting, in the least favourable conditions likely to be generally encountered. These limits are intended to provide guidance at the planning stage of the line and national standards or other specifications against which the performance of the line may be checked after construction and during its useful life. The measuring apparatus and methods used for checking compliance with limits should comply with the respective CISPR specifications, as e.g. the basic standards series CISPR 16, see [1]. This third edition of CISPR TR 18-2 is adapted to the modern structure and content of technical reports issued by IEC. The second edition of CISPR TR 18-2 underwent thorough edition and adaptation to modern terminology. This third edition now also covers an adequate method of measurement for radiated disturbances from HV overhead power lines and substations in the range 300 MHz to 3 GHz, since gap-type discharges can be a potential noise source disturbing modern digital radio communication. Keywords: radio noise from overhead power lines and high-voltage equipment