缩短继电保护整定计算时间的措施

在进行整定计算时最大、最小零序电流以及最小助增系数的计算都要考虑各种电网运行方式、故障点和故障类型。为了减少最大、最小零序电流的计算工作量，作者提出了如何合理地选择电网运行方式、故障点和故障类型的方法，以及如何选择运行方式和故障点以减少最小助增系数计算工作量。这些方法有助于减少计算时间、提高计算能力以及整定计算程序的开发。

MEASURES TO QUICKEN CALCULATION SPEED OF SETTINGS OF PROTECTIVE DEVICES

In the setting of protective devices the maximum and minimum zero sequence currents and minimum sideline current addition coefficients must be calculated when the various operating modes of power network, the fault positions and the fault types should be considered. In order to reduce the calculation workload of maximum and minimum zero sequence currents and that of sideline current addition coefficients, the methods for rational selection of the operating modes and fault positions are put forward. For setting of protective devices these methods would be helpful in reducing calculation time, enhancing the calculation capability and in the development of programs for calculating settings.