Category Archives: Tools and Guidelines

The following test cases can be used to test the load flow assessment tool. The parameter for each network are given together with the expected results for each scenario (CSIR, 2021).

This user guide is a reference for use of the Load Flow Assessment tool for Small Scale Embedded Generation (SSEG) into medium and low voltage networks. It is intended for small radial distribution networks with a maximum of four buses and a minimum of two buses. Its purpose is to calculate steady-state currents, bus voltages, real and reactive power flows through branches in a network. It offers insight into how a network performs in a various operating conditions. The tool also gives insight into over and under voltage situations and thermal limit violations (CSIR, 2021).

The Load Flow Assessment tool is for Small Scale Embedded Generation (SSEG) in medium and low voltage networks. It is intended for small radial distribution networks with a maximum of four buses and a minimum of two buses. Its purpose is to calculate steady-state currents, bus voltages, real and reactive power flows through branches in a network. It offers insight into how a network performs in a various operating conditions. The tool also gives insight into over and under voltage situations and thermal limit violations (CSIR, 2021).

This document describes how municipal distributors can adjust to a future where SSEG is a more significant part of their network. It starts by outlining the high-level institutional and operational changes that are necessary, and then moves to the practicalities of the processes, requirements, documents, and capacity needed to accommodate SSEG onto the network. It refers to documents endorsed by SALGA and the AMEU for this purpose, as well as noting the capacity building support available.

A table comparing different power system simulation software characteristics. Compiled by the CSIR (CSIR, 2019).

An overview of the PV Green Card quality assurance programme for installers, the benefits of engaging in this programme, as well as how to apply for such Green Card accreditation (South African Photovoltaics Industry Association, 2018).

Provides an overview of the PV Green Card quality assurance programme, the benefits the programme for prospective PV SSEG customers, as well as how to go about engaging with PV GreenCard installers. (South African Photovoltaics Industry Association, 2018)

City of Cape Town’s form for declaring any off-grid generators and UPS systems (City of Cape Town, 2019).

The Grid Impact Study guideline provides a hand calculation method to assess whether any network changes are required to enable the connection of generators (such studies are often required if systems exceed the parameters in NRS097-2-3). Covers low and medium voltage connections (MPE, 2018).