UK’s largest waste-to-energy plant will be equipped with Clyde Bergemann’s on-load boiler cleaning systems

Von Roll Inova, the Swiss subsidiary of the international conglomerate A-TEC Industries, has awarded Clyde Bergemann with the turnkey delivery of three SCS Shower Cleaning Systems to be installed in the 72 MW Riverside facility.

The SCS systems will be equipped to clean second and third open pass of all three combustion lines. Each combustion line processes 31.8 tonnes of municipal and commercial waste per hour to generate enough electricity to serve roughly 66 000 households.

The use of waste as fuel is a procedural challenge, as the range of material delivered to a plant can vary from well-sorted domestic refuse, through mixed waste fractions to fuel mixtures that may additionally contain various types of biomass. By using Clyde Bergemann technology, the open passes are kept free of deposits so that the heat transfer is maintained constantly. Subsequently, deposit formation and high-temperature corrosion will be avoided resulting in optimized plant availability and reliability.

The SCS system uses water as the cleaning medium. The cleaning nozzle is mounted on a flexible, temperature-resistant metal hose. The nozzle enters the boiler guided by a flange. The SCS systems for the Riverside plant will be fully automated multiple-row units.

The term “multiple-row” refers to the flange arrangement in multiple rows across the boiler roof. By using a crane runway, SCS enters these flanges to clean different sections of the boiler.

The scope of this turnkey supply comprises erection and commissioning as well as all works for laying of pipes and cables.



Megger adapts relay test sets for the future

With Megger’s GOOSE (Generic Object Oriented Substation Event) Message Interface, it is now possible to use existing conventional test sets for testing protective relays and other items of substation equipment that communicate via the IEC 61850 networking protocol.

The new interface makes possible big savings, as there is no longer a need to purchase costly new test equipment for networked substations. Additional key benefits of the GOOSE Message Interface are that it allows engineers and technicians to continue using equipment with which they are familiar, and also that it avoids the early obsolescence of test sets that are not IEC 61850 compatible, many thousands of which are currently in use.

In substations where IEC 61850 is used, relays, circuit breakers and other devices communicate with each other by means of GOOSE messages transmitted via the network. GOOSE intercepts these messages and translates them into binary (on/off) signals that are compatible with conventional test sets. Likewise, the unit translates binary signals from the test set into GOOSE messages.

All messages are processed by the interface in less than 0.5 mS, which that no noticeable time delays are introduced into test sequences. GOOSE has ten binary inputs and ten binary outputs, and a port for connecting it to the IEC 61850 substation network. The relationship between the inputs, outputs and the GOOSE messages is freely programmable by the user. The GOOSE Message Interface therefore acts as a universal adaptor that can be used with any type of relay test set ” it is not limited to test sets from a specific manufacturer.

As the binary outputs of the GOOSE Message Interface provide sufficient power to drive external electromechanical relays directly, the unit is also an invaluable aid in the testing of substation control and interlocking systems and, in this application, it can be used as a standalone device, without the need for a relay test set.

A further advantage of the new unit is that it provides a complete solution to network security problems related to the testing of substations, as it does not require a PC to be connected to the substation network. It can even be used as a GOOSE firewall, allowing standard network analysis software running on a PC to be used to analyze traffic on the substation network.



De-skew correction enhances accuracy of power measurements

High-frequency power measurements can now be carried out with greatly enhanced accuracy using a de-skew correction signal source, along with voltage and current probes, in conjunction with the /G4 power measurement option on the Yokogawa ranges of digital and mixed-signal oscilloscopes.

Even though power measurement using an oscilloscope is fundamentally less accurate than using a digital power meter, it offers much higher bandwidth. It is particularly suitable for measuring high-frequency switching losses in switched-mode power supplies.

It also provides a power measurement capability using a general-purpose product which has other uses, an option that may be more acceptable to users who are not ready to invest in a true power meter or have limited budgets for test equipment. The de-skew correction signal source is an accessory which is specifically designed to maximize the measurement accuracy of oscilloscopes when they are used for power measurements involving fast switching devices and high-frequency waveforms.

To correctly measure power-supply parameters such as power, impedance, power factor, watt-hours and ampere-hours from the voltage and current under analysis, the voltage and current signals must be applied to the signal input terminals of the oscilloscope with no difference in the transfer time. The signal source corrects the potential delays between voltage and current channels in combination with the auto de-skewing function.

The unit produces an output voltage from 0 to 5 V and an output current of 0-100 mA (for low-current measurements) or 0-1 A (for high-current measurements). It has a fall time of approximately 25 ns (low current) or 250 ns (high current). The fixed time difference between voltage and current is 2.3 à‚± 0.5 ns (low current) or 14.5 à‚± 1.0 ns (high current). Its power supply of 5 V DC/100 mA is taken from the oscilloscope via USB.



Innovative solar inverters make more efficient use of solar energy

Siemens is extending its range of solar inverters for commercial photovoltaic plants for the power range up to 500 kW.

A thin-film photovoltaic plant with an output of 500 kW covers the equivalent area of about three football fields. The energy produced by such a system can meet the annual energy demand of about 250 households. For such plants Siemens now offers the modified Sinvert PVM17 solar inverter with improved efficiency and extended maximum power point range.

The Sinvert PVM20 solar inverter supplements the Sinvert PVM series in the 20 kW power class. Using the new Sinvert PVM Control Box, energy supply companies can limit the system output during peak periods by remote control, thereby avoiding a grid overload.

Operators of photovoltaic plants now have a choice of four power classes of 10, 13, 17 and 20 kilowatts for the compact Sinvert PVM inverters. The four power classes as well as the extended maximum power point range facilitate even more flexible and precise system planning.

The Sinvert PVM17 and Sinvert PVM20 solar inverters achieve a new peak efficiency level of 98.2 per cent and a weighted efficiency of 97.8 per cent according to eta EU. Thanks to the higher efficiency, a significantly higher yield can be achieved over the operating life of a photovoltaic plant. In addition, the Sinvert PVM17 and PVM20 can now deliver their full output at ambient temperatures of up to 45 à‚°C.

Even at very high temperatures therefore, optimum plant efficiency is assured. The new Sinvert PVM Control Box enables operators to comply with the legal requirements of the German Renewable Energy Sources Act (EEG) and the guideline on “Generating Systems on the Medium-Voltage Power Grid” issued by the German Association of Energy and Water Industries.

The guideline provides the option for systems with an output of 100 kW or more to reduce output by the energy supplier with the aim of eliminating grid overloads. The Sinvert PVM Control Box permits communication with as many as 2 x 31 solar inverters as well as a connection to the Sinvert Webmonitor web portal. The specified limitation of output is stored in the Sinvert PVM Control Box. The Sinvert PVM Control Box and the Sinvert Webmonitor provide customers with an overview of the infeed power, enabling them to check the power limitation by the energy suppliers.



China’s first utility-scale thin film solar farm will use 5 MW of SunFab 5.7m2 panels

Applied Materials, Inc. and China Energy Conservation and Environmental Protection Group (CECEP), a leading new energy company in China, have signed a memorandum of understanding (MOU) to explore projects for accelerating the development and deployment of solar photovoltaic (PV) technology.

The non-binding MOU forms a framework for Applied Materials and CECEP to work together on a range of activities to further CECEP’s solar PV industry strategy and roadmap.

CECEP plans to build a 5 MW utility-scale PV power plant in Inner Mongolia using silicon-based thin film solar modules for the first time. ENN Solar Energy Co., Ltd. has won the bid to supply modules for this project and will use 5.7m2 tandem junction, thin film, solar modules manufactured on ENN’s SunFab line which was supplied by Applied Materials.

“The collaboration between CECEP and Applied Materials will further advance the deployment of the latest PV technologies in China,” said Mr. Li Junfeng, Deputy Director of the Energy Research Institute of the National Development and Reform Commission. “The 5 MW solar farm that CECEP plans to build in Inner Mongolia, using Applied’s SunFab technology, will be the largest thin film, utility-scale solar farm in China when completed.”

The announcements were made during the US-China Renewable Energy Forum in Beijing which was attended by Mr. Zhang Guobao, Chairman of China’s National Energy Administration (NEA), and Mr. David Sandalow, Assistant Secretary of the US DoE.



RuggedCom and Itron announce partnership for wireless smart grid solutions

RuggedCom, a leading provider of rugged communications networking solutions designed for mission-critical applications in harsh environments and Itron, a leading technology provider to the global energy and water industries, have forged a partnership to expand the scope of their smart grid offerings.

RuggedMAX, an IEEE 802.16-2005 (WiMAX 802.16e) certified solution, will be integrated into Itron’s OpenWay smart metering solution as an additional WiMAX backhaul communications option for utilities. RuggedMAX recently passed interoperability and communications testing with OpenWay.

RuggedCom’s utility-grade, flexible RuggedMAX solution provides high-speed, secure, prioritized, and long-range broadband wireless connectivity. It offers fixed and mobile connectivity ࢀ” where permitted by FCC and Industry Canada rules ࢀ” by supplying a comprehensive solution of base stations and subscriber units for fixed and vehicular deployments. The RuggedMAX solution provides advanced metering backhaul as well as distribution automation and field force communications using a single infrastructure ࢀ” ensuring dedicated bandwidth for mission-critical applications with full quality of service (QoS) implementation.

Itron smart grid technologies are demonstrating how built-in, high-speed two-way communications give consumers more information about their energy usage, allow utilities to offer their customers greater choice in rate plans, and provide higher reliability at lower cost.



British princess opens Doosan Power Systems’ carbon capture emissions reduction test facility

Doosan Power Systems says it has made a step towards accelerating the UK’s ability to deliver carbon capture technology after HRH The Princess Royal opened the company’s post-combustion plant test facility at Renfrew, Scotland.

The Doosan Babcock test facility features Post Combustion Carbon Capture (PCCC) technology and will be a key component in what is now the world’s largest carbon capture research facility. Doosan Babcock is a part of Doosan Power Systems.

The PCCC facility simulates the entire process of modern coal fired power generation. It will burn real coals and biomass, and includes a range of gas clean-up systems, before carbon dioxide capture takes place. Doosan Power Systems will be ready to deliver very low carbon emission power technology to their customers in both the UK and other global markets, as soon as the market for these products becomes available.

The new facility makes the Renfrew site a global centre for carbon capture research, complementing the OxyCoal Clean Combustion Test Facility; opened by Doosan Babcock in Renfrew, Scotland, in July 2009, which remains the world’s largest OxyCoal test facility.

HRH The Princess Royal, originally visited the Doosan Babcock site ten years ago, and revisited Renfrew to meet employees on site and find out more about their pioneering activities in carbon capture.

Iain Miller, CEO of Doosan Power Systems, said, “The new facility places Doosan Power Systems at the forefront of carbon capture research and we are honoured to welcome HRH The Princess Royal to Renfrew to open the facility. This opening is testament to the hard work of the team at Renfrew, and will enable Doosan Power Systems to cement its status as a key carbon capture innovator on both a UK and global level in the future.”

The new facility uses Solvent Scrubbing Technology to capture CO2 from coal fired flue gases, through a process of absorption and regeneration. Doosan Power Systems has been developing and will continue to develop this technology in partnership with the Canadian based HTC Purenergy and the University of Regina.

Carbon capture and storage (CCS) is a vital part of the ongoing balanced energy portfolio and will play a large role in achieving the UK’s targets of 80 per cent CO2 emission reduction by 2050. This project marks an important milestone in the development of CCS and will help the UK secure its share of the estimated à‚£2-4bn ($3-6bn) a year created by the global CCS market
by 2030.



Metso adds twenty years to power plant in Finland

Metso has signed an agreement with Tampereen Energiantuotanto Oy for the renewal of the automation, field devices and electrification at the Lielahti power plant in Tampere, Finland.

The original installations dating back to 1988 when the plant went on stream will be replaced by modern technology to extend the plant’s operational life by about twenty years. The project will be completed in the autumn of 2011.

“In the future, one operator will be able to control and monitor the operation of the Lielahti power plant as well as the production and distribution of district heat in Tampere, which is a city of over 200 000 inhabitants. Also, it will be easier to find the causes of disturbances,” says Sales Director Heikki Myllàƒ¤ri of Metso.

The natural gas fueled Lielahti co-generation plant produces electricity with a capacity of 147 MW and district heat with a capacity of 160 MW. Metso’s delivery scope includes removing the old automation system and installing a new-generation automation system with integrated steam turbine controls.

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