The Chorus Line Reliable Wind Power Control The Chorus Line, managed - PDF document

____________________________________________________________ __________________________ The Chorus Line Reliable Wind Power Control The Chorus Line, managed by its ChorusDIRECTOR application software, puts your wind turbines in perfect tune. Doc. number 61:00-1 Rev. 5 September 2006 1 _______________________________ ___

____________________________________________________________ __________________________ Quest – Introduction Quest AB – Your Partner Co-development with the Manufacturers Since the start in 1983, Quest has built up a The Chorus system is developed in close wealth of practical experience in the field of wind association with our partners, the windmill manufacturers. Our partners’ demands have power control. This ever-growing experience is used to the benefit of the wind power industry, formed a controller well suited for modern wind thus making Quest an ideal partner for turbines. development of control technology. Use of Industrial Standard Products Our customers’ requi rements that the system Strategy for Success In order to be successful we follow certain key should employ standard products, resulted in our strategies: choice to use standardised industrial bus systems (including Ethernet and CAN), wireless local  Close partnership with windmill manufacturers communication (Bluetooth) and cost-effective man- machine interface (PDA’s).  Use of industrial standard products  Open software Open Software Functionality Quest has drawn on many years of experience  Modular system when designing the control software. This know-  Cost-effective development how is now available to our partners through the open software. This means that our partners have access to the wind turbine functionality and to various toolboxes included. Hence, our customers have the freedom to create their own specific software solutions and keep them confidential. Modular System It is essential that the development time for partner projects is kept as short as possible. In order to achieve this, the control system ’s hardware and software have been made highly modular. This makes future development or modifications fast, efficient and secure. Cost-Effective Quest has been working in the field of control systems for many years. This accumulated know- how is a key ingredient when developing cost Per Stjerneman, Managing Director effective solutions for the wind power industry. Quest – Your development partner! Göteborg, September 2006 Per Stjerneman Quest Energy Control AB SE-421 66 V.Frölunda, Sweden Tel: +46 31 510010 E-mail: information@questab.com Web: www.questab.com 2 Doc. number: 61:00-1 Rev. 5 September 2006 ____________________________________________________________ ______ __

____________________________________________________________ ________________________ _ Product Family & Central Controller The Chorus Line – Quest’s Product Family Communication Our family of control system products is called The Chorus system features three high speed “The Chorus Line”. buses: The Ethernet and two CAN buses. The first CAN-bus is normally used to communicate with the distributed standard industrial I/O modules around the wind turbine, while the second one can be used to communicate with e.g. inverters, a vibration monitoring system or the generator. Additionally, there are two RS-232 ports and two RS-485 ports for e.g. user interface. Software Download The product software may easily be updated via a download procedure. Security Loop In order to achieve a high security in a wind power plant consisting of several different intelligent systems, Chorus includes a specific security feature monitoring an external loop (with e.g. stop buttons). It also offers two security outputs that The family includes the following hardware: can block external equipment in case of an  ChorusCPU emergency. Moreover, it is self supervising. Central controller  ChorusTRAFO Voltage transformer  ChorusIGNIT Thyristor driver Configuration … and the associated software: On- Max. Inputs/Outputs  ChorusOS Operating system board extension  ChorusDIRECTOR Application software Digital IN 24 512 The Chorus Line is designed in such a compact Digital OUT 16 512 way that these core products, together with a few Analog IN 9 64 complementary standard products, form the entire control system that your wind turbines need. PWM OUT 6 64 ChorusCPU Highlights Communication Number Speed  High accuracy in measurements Ethernet T-base 1 10/100 Mbit/s  Proven high reliability RS-232 2 115.2 kbit/s  I/O via standard industrial bus systems RS-485 2 115.2 kbit/s  CAN-bus 2 500 kbit/s Easy and quick configuration  Cost effective product General Data Description Data Remarks 18 – 32V Power requirements 24V DC, 3A Processor type 50 MIPS RISC Motorola MPC 555 Flash memory 8 MB EEPROM 8 KB RAM 2 MB Doc. number 61:00-1 Rev. 5 September 2006 3 _______________________________ ___

____________________________________________________________ __________________________ Hardware Modules Chorus Voltage Transformer Thyristor Driver Module The voltage and current measurements are used Thyristors are controlled by the external driver to calculate energy production, blind power and to module named ChorusIGNIT. It is typically synchronise the connection to the grid. installed close to the thyristors and communicates with the ChorusCPU module through a bus cable. Quest’s strategy is to separate all grid voltage devices from the controller and to use a standard properly scaled voltage input signal. Chorus uses external voltage trafos for the nominal grid voltage 690/400/230V and to obtain 110V signals from high voltage equipment. ChorusTRAFO Description Data Name ChorusTRAFO Type Single phase type Max Voltage 690V Accuracy 0.3 % ChorusIGNIT 0 – 10V Output Description Data Name ChorusIGNIT Industrial Standard Modules Thyristor outputs 6 When expanding the standard Chorus Output voltage, max 690V configuration, it is easy to plug in standardised industrial I/O modules from different vendors Output current, max 1A which all connect to the CAN-bus. Over-current protection Yes The amount of cabling is greatly reduced by Digital inputs 6 distributing the I/O units around the mill. A bus terminal and some I/O modules 4 Doc. number: 61:00-1 Rev. 5 September 2006 ____________________________________________________________ ______ __

____________________________________________________________ ________________________ _ User Interface Handheld User Interface + Bluetooth Central Monitoring System Chorus employs standardised hardware products Since the protocol and the software are open the also for the user interface, for example a small manufacturer can incorporate the mills in the end- customer ’s central monitoring system. handheld PDA. This terminal connects to the control system via Bluetooth wireless communication The customer benefits are obvious:  Service personnel keep and manage their individual terminal.  The personnel may for example sit in a car outside the mill monitoring the operation or updating parameters.  When working in e.g. the nacelle he may operate the plant remotely. Hence, there is no need for a second person assisting at the central control system downstairs.  The total investment cost is reduced since there is only need for a couple of handheld terminals in an entire wind park consisting of several hundred machines. Fixed Graphical Terminal The Chorus user interface may also include a fixed graphic terminal with touch screen used for demonstrations or when needed in the wind User interface through a handheld PDA turbine. Doc. number 61:00-1 Rev. 5 September 2006 5 _______________________________ ___