May 17, 2013
Emissions monitoring system ensures supply of electricityBack
Engineering|Africa|Bytes Systems Integration|CoAL|Environment|Eskom|Generators|Health|Invensys Operations Management|Invensys Wonderware|Microsoft|System|Systems|Africa|South Africa|Electricity Supply|Emissions Monitoring System|Equipment|Information Technology|Systems|Environmental|Deon Van Aardt|Kristy Ross|Power|Operations|Information Technology
© Reuse this
As a result, engineering and information technology company Invensys Operations Management and information technology provider Bytes Systems Integration helped Eskom implement a comprehensive emissions monitoring system to better supervise and control its emissions.
The emissions monitoring system is based on software that was supplied by Invensys Wonderware in 2011 and currently forms part of the integrated generation control centre (IGCC) that was provided to Eskom in 2010.
Every power station has an emissions licence with which it needs to comply. This ensures that the environment and health of people in the vicinity of power stations are not affected negatively. The emissions licence specifies two limits – a normal operating limit, which states that emissions must be below this limit 96% of the time – and a cap limit, which emissions must never exceed.
Eskom senior consultant Kristy Ross says control room operators at power stations must be constantly aware of potential problems which might result in emissions exceeding the set legal limits.
“If such an event occurs, it might be necessary to exercise load loss. This will have a ripple effect, as other power stations will be required to pick up the slack by ramping up production. Given the scope of the problem and Eskom’s nationwide footprint of 13 operational coal-fired power stations, it was decided that emissions status should be centrally monitored and controlled in real time,” Ross says.
The system runs on a Microsoft platform and collects data, including emissions levels, from all Eskom’s power plants, after which it is sent to a central control room at the utility’s Megawatt Park head office, in Gauteng.
Invensys technical director Deon van Aardt says Eskom now has a central platform that provides an overall view of its fleet of generators.
The emissions monitoring system also helps stabilise the electricity grid and reduce downtime of generators, as it provides an early warning in the event of emissions exceeding the legal limits.
Van Aardt says Eskom has the ability to connect to installed equipment at each generating stack, which monitors the ash emissions in real time.
This information is then captured by a database, which the utility can use to draw a graph of the emissions. This graph is then logged into an operational historian that captures the data at a high-rate on plant level. The ArchestrA System Platform, which forms part of the main system, collects all the information and provides Web-based visuali- sation for the IGCC, which can be accessed using Internet Explorer.
At the IGCC, Eskom has set up dashboards and reports. The dashboards show a live view of the operations and provide the emissions levels. From there, Eskom can draw reports to make an analysis and strategic decisions, take corrective action or shut down the generating plants, if needed.
“You have to get the right information in the right context and, by having a mechanism that enables someone to rapidly and easily collect plant information and put it in the right context, operations can run more efficiently. In this case, it is environmental data being collected to control emissions, so Eskom can make deci- sions quickly if needed,” Van Aardt says.
The emissions information can also be accessed from mobile devices, while the monitoring system also provides a warning, should emissions begin to exceed the legal limit. This enables Eskom to quickly take preventative measures.
Edited by: Tracy Hancock© Reuse this Comment Guidelines (150 word limit)
Creamer Media Deputy Editor Online
Other Electricity News
Updated 1 hour 52 minutes ago Tanzania said on Thursday it had signed a $70.5-million loan with the African Development Bank (AfDB) to finance reforms in the east African nation’s energy sector. AfDB is among a group of donors that withheld nearly $500-million in budget support to Tanzania last...
South Africa slipped one position, from 52 to 53, in the latest world competitiveness ranking, which highlighted power and infrastructure shortfalls, high youth unemployment, as well as inadequate education and technical skills availability as key challenges to the...
Article contains comments
South African power utility Eskom faces a 17-million tonne coal shortfall by 2017 at its coal-fired power plants, a Cabinet Minister said on Wednesday. The shortfall is anticipated in 2015 at Matla, Tutuka and Hendrina power stations and in 2016 at Kriel and Arnot...
Updated 8 minutes ago European manufacturer Airbus is confident that it will win more orders for its flagship A380 Superjumbo airliner before the end of this year. "We should have some orders for the [A]380 this year," company Chief Operating Officer: Customers John Leahy told aviation...
Updated 42 minutes ago Allegations that South Africa promised a $10-million bribe to a former FIFA vice president to win its 2010 World Cup bid were unfounded, a South African Football Association (SAFA) spokesperson said on Wednesday. “We are disappointed at the allegations ... they are...
Updated 1 hour 41 minutes ago Senegal power utility Senelec on Wednesday signed a preliminary agreement with Qatar's Nebras Power and Japanese firm Mitsui & Co Ltd to build a floating liquefied natural gas (LNG) regasification terminal and a 400 MW power station. Senegal, which generates much of...
Recent Research Reports
Steel 2015: A review of South Africa's steel sector (PDF Report)
Creamer Media’s Steel 2015 report provides an overview of the key developments in the global steel industry and particularly of South Africa’s steel sector over the past year, including details of production and consumption, as well as the country's primary carbon...
Projects in Progress 2015 - First Edition (PDF Report)
In fact, this edition of Creamer Media’s Projects in Progress 2015 supplement tracks developments taking place under the Renewable Energy Independent Power Producer Procurement Programme, which has had four bidding rounds. It appears to remain a shining light on the...
Electricity 2015: A review of South Africa's electricity sector (PDF Report)
Creamer Media’s Electricity 2015 report provides an overview of State-owned power utility Eskom and independent power producers, as well as electricity planning, transmission, distribution and the theft thereof, besides other issues.
Construction 2015: A review of South Africa’s construction sector (PDF Report)
Creamer Media’s Construction 2015 Report examines South Africa’s construction industry over the past 12 months. The report provides insight into the business environment; the key participants in the sector; local construction demand; geographic diversification;...
Liquid Fuels 2014 - A review of South Africa's Liquid Fuels sector (PDF Report)
Creamer Media’s Liquid Fuels 2014 Report examines these issues, focusing on the business environment, oil and gas exploration, the country’s feedstock supplies, the development of South Africa’s biofuels industry, fuel pricing, competition in the sector, the...
Water 2014: A review of South Africa's water sector (PDF Report)
Creamer Media’s Water 2014 report considers the aforementioned issues, not only in the South African context, but also in the African and global context, and examines the issues of water and sanitation, water quality and the demand for water, among others.
This Week's Magazine
While economic forecasts for the African continent are most favourable, African airlines may not be able to benefit from the expected growth in the region’s gross domestic product (GDP), International Air Transport Association VP: Africa Raphael Kuuchi has warned....
The Automotive Production and Development Programme (APDP) will need to change substantially post 2020, says Metair Investments South African operations COO Ken Lello. “We must not make tweaks. We have to change. What we are doing is not sustainable.”
Banking group Absa’s forecast is for the rand to end the year at around R13 against the dollar, weakening further to R13.50 by 2016, says Absa sectoral analyst Jacques du Toit. He warns that possible interest rate hikes in the US may see capital being pulled from...
The Dispute Resolution Centre at the Bargaining Council for the Civil Engineering Industry (BCCEI) is now open to handle party-to-party disputes. The BCCEI represents the interests of all level four to nine Construction Industry Development Board companies.
Communications technology firm Ericsson sub-Saharan Africa head Fredrik Jejdling says the company’s commitment to sustainability and corporate responsibility has been integrated into all facets of its operations, which has provided it with sustainable revenue...