本文件旨在推荐一套确定和验证高压直流（HVDC）换流站总损耗的标准程序。本程序适用于换流站的所有部分，包括备用、部分负载和满载损耗以及计算和测量方法。高压直流换流站由许多不同的设备组成，如图1所示。各种设备的损耗机制各不相同，行业一致认为，单靠工厂或现场测试无法轻易确定总损耗。在额定条件下运行时，这些换流站的损耗通常在换流站额定值的每单位0.005到0.01之间。因此，通过将部件测试和计算得出的每件设备的损耗相加（如适用），确定整个HVDC换流站的损耗已成为公认的做法。 由于整个换流站的复杂性以及在其运行中遇到的非线性电压和电流波形，采用了不同的方法来确定全站仪损耗，有时会得出不同的结果。本标准中包含的建议适用于公用系统中用于电力交换的所有线路换流站。在某些应用中，同步补偿器或静态无功补偿器（SVC）可连接至HVDC换流站的交流母线。但是，本文件不包括此类设备的损失确定程序。

It is the purpose of this document to recommend a set of standard procedures for determining and verifying the total losses of a high-voltage direct-current (HVDC) converter station. The procedures are applicable to all parts of the converter station and cover standby, partial-load, and full-load losses and methods of calculation and measurement. HVDC converter stations consist of a number of different pieces of equipment, as shown in Fig 1. The loss mechanisms vary among various pieces of equipment, and it is the consensus of the industry that the total losses cannot readily be determined by either factory or field testing alone. When in operation at rated conditions, these stations develop losses typically in the range of 0.005 to 0.01 per unit of the converter station rating for each conversion. Therefore, it has become an accepted practice to establish the losses of the total HVDC converter station by adding the losses from each piece of equipment as derived from component tests and calculations, as applicable. Due to the complexity of the overall converter station and to the nonlinear voltage and current waveforms encountered in its operation, different methods have been used for establishing total station losses, sometimes giving differing results. The recommendations contained in this standard apply to all line-commutated converter stations used for power exchange in utility systems. In some applications, synchronous compensators or static var compensators (SVC) may be connected to the ac bus of the HVDC converter station. However, loss determination procedures for such equipment are not included in this document.