Case Study: De Aar Wind Farm Facility Protection, Control, Automation and DC Solution

Adenco Construction was awarded the electrical construction for two wind farms in De Aar, Northern Cape South Africa by Longyuan South Africa Renewables.

De Aar 1 is a 100MW, 67 WTG wind farm. De Aar 2 is a 140MW, 96 tower wind farm. Longyuan will invest a total of R 5 billion into the two projects. The construction start date was 11 January 2016.

Adenco had the construction abilities but did not have the capabilities or the experience to tackle the electrical substation Protection, Control, Automation, DC system supply, testing and commissioning.

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Case Study: Duvha – EMDAS

Each power station has its own individual needs as there may be legacy equipment and systems already in place. It may not be in the plant’s best interest to replace all legacy devices and several aspects should be reviewed for the change-over process and requirements between systems. Topics for consideration include:

New EMDAS Eskom Standard
Metering best practices
Bus communication architecture
Equipment life expectancy
Effective use of available equipment and infrastructure
Outage schedules for installation of new equipment
IT/OT Interfacing
System Ownership within Eskom

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Case Study: ESKOM – Capacitor Bank Protection

ESKOM had a requirement to have a National Transmission Contract for capacitor bank protection schemes that will be able to protect, monitor and control their capacitor banks for voltages ranging from 88 kV to 400 kV and for capacitor banks ranging from reactive power of 36MVAr to 150MVAr.

Eskom is a National South African electricity public utility, established in 1923.

The utility is the largest producer of electricity in Africa is among the top seven utilities in the world in terms of generation capacity and among the top nine in terms of sales.

The company is divided into Generation, Transmission and Distribution divisions and together Eskom generates approximately 95% of electricity used in South Africa.

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Case Study: eThekwini Integrated Protection & Control

eThekwini Municipality had the need to upgrade and refurbish their existing 132/11kV substations to IEC 61850 compliance. This included the upgrade of various IEDs to IEC 61850 to perform both protection and control.

eThekwini Municipality is a Category A municipality found in the South African province of KwaZulu-Natal. The area is topographically hilly, with many gorges and ravines, and almost no true coastal plain. Durban has a turbulent history dating from ivory hunters in the 1820s and their conflict with the local Zulu monarchs. By 2030 eThekwini Municipality will enjoy the reputation of being Africa’s most caring and liveable City, where all citizens live in harmony.

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