Implementation of Control Performance Standards in Southern African Power Pool

Abstract

The number and size of interconnected electric power systems is growing in the world, promoting electricity trading necessary for socio-economic growth. Interconnections are generally more reliable than isolated power systems. The increased reliability is rarely achieved without shared responsibility among System Operators. In this regard, implementing and adhering to common power system operations standards is very important. This paper presents the implementation of Control Performance Standards (CPS1 and CPS2) in the Southern African Power Pool (SAPP) Interconnection. These standards were adopted from North American Electric Reliability Corporation (NERC) of the US. The paper presents how input parameters for calculation of CPS1 and CPS2 were determined in SAPP. Based on real one-month data from year 2018, all SAPP Control Area Operators passed CPS1 and CPS2, except for one which failed CPS1 only. Lessons learnt from implementing CPS1 and CPS2 in SAPP are discussed in this paper.