Advancing genset control

CRE Technology has launched what it claims is the most advanced genset control unit on the market, its Gensys 2.0.

Gensys 2.0 in its standard version allows static paralleling, also known as black start synchronization, which enables a power plant to go from a stand-by position and be up and running in parallel in less than 10 seconds.

This Gensys 2.0 feature is particularly useful when a fast response to a heavy load request is required, such as for large electric motors or turbines. It is also useful when it is not possible to shed load in situations such as hospitals or in certain heavy industries.

In less sensitive industries, static paralleling also allows the use of smaller uninterruptible power sources, reducing investment and maintenance costs, without extra investment on the genset power plant side.

The second main advantage of static paralleling is the magnetization of the step-up transformers without any amps rush. The transformer can be magnetized with a low voltage before it receives power from the genset.

Power plant benefits from important cost gains (i.e. less cabling, lower transformer consumption) and a better efficiency (quick power plant availability and more stable power).

Static paralleling, which is widely used in some European countries, is now being requested worldwide. CRE Technology has been familiar with this particular specification for a long time, enabling it to develop the necessary functions that have been incorporated into the Gensys 2.0.

With dynamic synchronization, the first genset closes on a dead bus before other genset enter into the synchronization mode to close their breakers. The synchronizers will individually adjust frequency, phase and voltage to match those of the first genset. This can take time due the engine, generator and other installation-related factors, thus, a delay cannot be removed.

With static paralleling, all sets are ready to take the load right after the starting phase, reducing the time to have 100 per cent of the power plant nominal capacity available.

The Gensys 2.0 unit can control both modes. The dynamic synchronization is even available as a back-up to static paralleling, if required.

According to CRE technology, Gensys 2.0 is the only unit available with a diverse programming capacity.

Shahjibazar Power orders 32 GE Jenbacher engines

Independent electricity generator Shahjibazar Power has ordered 32 of GE’s natural gas-fuelled J620 GS Jenbacher engines, which will be installed at a site, located about 180 km north of Dhaka, Bangladesh.

The project will be developed by independent power producers (IPPs) who are rapidly building new power plants, with government support, to improve electricity supplies in rural areas of Bangladesh that do not have reliable transmission grids.

The units for the Shahjibazar project will be contained in two powerhouses and will generate 92.8 MW of electricity for the local grid. The engines are scheduled to be commissioned by the beginning of 2009.

Prady Iyyanki, CEO of GE Energy’s Jenbacher gas engine business, said: “As Bangladesh’s economy continues to grow, the government and private sectors are seeking solutions to improve the country’s energy infrastructure.

“GE’s fuel-flexible Jenbacher engines are a cost efficient, highly reliable power generation solution, making them suitable for a variety of projects in Bangladesh and throughout South Asia.”

Tognum expands Asian and on-site energy business with order

Tognum group is expanding their Asian business in the area of on-site energy generation with a substantial contract: a consortium led by Tognum subsidiary MTU Friedrichshafen GmbH will deliver ten emergency power supply gensets for two Chinese nuclear power stations.

The order value is at approximately €65 million. Consortium partners include the Joint Venture between MTU and the Chinese Norinco Group, Shanxi North MTU Diesel Co. Ltd., and energy generation supplier AREVA NP. Before this contract was awarded by the Chinese nuclear power plant operator, it was important to ensure the necessary local content: the Joint Venture agreed in December 2007 by MTU, and their Chinese partner Norinco Group ensured that MTU complied with this particular prerequisite. The MTU consortium can command a significant share in the highly coveted Chinese market for emergency power supply gensets in nuclear power plants. The Chinese nuclear power station market is buzzing – a considerable number of new plants are scheduled to be built in the near future.

“This contract both serves to expand our on-site energy business, as well as providing a significant contribution to our Asian operations,“ explains Volker Heuer, Chairman of the Executive Board and CEO of Tognum AG. “It goes to show that our strategic growth initiatives are paying off.“ Other strategic Tognum group drivers include the expansion of the product portfolio in drive and propulsion systems and the focus on high-margin after sales business.

At the core of the MTU On-site Energy emergency power supply gensets there are Series 20V956TB33 diesel engines with an electrical power output of 6000 kW. Upon the start signal, the gensets run up to their nominal speed within ten seconds, ready to pick up maximum performance. This is how they ensure the power supply for coolant pumps or the electronic control system of the nuclear power plant in a potential emergency scenario.