The success of black economic empowerment (BEE) is still not clear. The objective of this paper is to assess the results of BEE equity transfers and contribute to the development of a framework to assess the cost/benefit of transferring equity in this fashion. BEE data from 62 companies listed on the Johannesburg Stock Exchange were analysed using a qualitative methodology and descriptive analysis. The results indicate that respondent companies have transferred less than 25 per cent equity to BEE partners, that a majority of firms appear to support the social objectives of BEE, that external partners appear to best promote shareholder wealth, and that the primary source of funding for BEE equity transactions is third-party funding or the respondent companies themselves. Finally, the Malaysian experience of affirmative action offers some useful lessons for South Africa's BEE programme, as well as some valuable insights into the economics of wealth redistribution.

No abstract

No abstract

With the onset of renewable power sources onto the network, such as Photovoltaic power plants contributing to Total Harmonic Distortion (THD) in voltage, a methodology to quantify their contribution to the THD in voltage at the point of common coupling is needed. This paper give an overview of existing theory on the quantification of harmonic emission and in particular the method proposed by the CIGRE/CIREDC4.109 working group. It is concluded that the application of this method by single-point measurements can be improved upon by using synchronized multiple-point measurements. Discrimination to identity the harmonic currents regarded as emission is attempted in the assessment of harmonic emission at a PV plant feeding into a 22 kV distribution network

An improvement in the assessment of harmonic emissions as contributed by renewable generation such as a Photovoltaic (PV) plant, at a Point of Connection (PoC) to a distribution network, is needed. Both the generating source and the distribution network contribute to the voltage harmonic distortion at the PoC and single-point measurements cannot be used to quantify the relative contributions of each source. IEC 61000-4-30 Class A PQ measurements are used as a reference dataset for engineers and can be obtained simultaneously at different points in a network in an attempt to better understand the relative contribution by the source of distortion and the voltage supply network. The opportunity to improve the CIGRE/CIRED C4.109 approach by means of multiple-point synchronized network data is shown to be significant in the qualification of the statistical method but lacks the quantification in calculating the harmonic emission of a non-linear load. The CIGRE/CIRED method can be improved by only considering those harmonic currents identified as emission as some harmonic currents could be the result of background harmonic voltages in the supply network. Constraints in using IEC 61000-4-30 time-aggregated rms voltage and current values to support the assessment of harmonic emission using field-measured data is lastly shown as the calculation method and measurement uncertainty influence the compliance to grid code requirements on harmonic emissions.