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Purpose

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.

Abstract

New IEEE Standard - Inactive-Withdrawn. Withdrawn Standard. Withdrawn Date: Jan 10, 2002. No longer endorsed by the IEEE. A set of standard procedures for determining and verifying the total losses of a high-voltage direct-current (HVDC) converter station is recommended. 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. All line commutated converter stations used for power exchange in utility systems are covered. Loss determination procedures for synchronous compensators or static var compensators are not included.