 Aluminiumindustrie |
| Chemische Industrie |
| Wasserversorgung |
| Elektroantrieb für Kräne |
| Energiewirtschaft |
| Dosier-und Wägeeinrichtungen |
| Turbokompressoraggregate |
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Zeya HPP provides a frequency regulation of the Far East Integrated Power Grid. Zeya HPP has the responsibility for adjustment of daily load for Amur and Khabarovsk Power Systems and dynamic compensation for load variations in the Far East Power Grid. The Process Control System (PSC) of Zeya HPP, used on the plant at the beginning of 2004, being out of date with its equipment being worn out, was far behind the current level of developments in computer technologies and software. In February 2004 Zeya HPP announced a contest to select the contractor for carrying out the modernization of the PCS Information Subsystem. As many as 37 companies were invited, 8 of which submitted their offers. The contract was won by Sinetic. In March Sinetic and Zeya HPP signed the contract for modernization of PCS Information Subsystem. In April adjustment of the source information for engineering project was completed. PCS Information Subsystem of Zeya HPP is primarily intended for process optimization of energy production with the specified quality, achieved by the volume increase, quality and convenience enhancement of the information on the process equipment status and HPP water power operation mode that is provided to the plant operating personnel and engineering managers. The PCS is a unified open modular system, and thus its extension can be performed in stages by enlargement of processed signals and automation control functions of HPP primary and additional equipment when operated in normal, emergency and fault recovery modes. System structure:  Structure diagram of PCS Information Subsystem for Zeya HPPSignals from each turbine generator unit are processed by S7-414 H redundant controllers. Temperature monitoring cabinets are provided for handling of the information received from temperature sensors and shaft runout sensors that are installed on the frame of the turbine generator unit. Communication between controller cabinets and temperature monitoring cabinets is established via optical cable (Profibus DP network). Simeas P universal measuring device carries out direct reading of voltages, currents, active and reactive power, as well as values of turbine generator unit frequency. On TP 270 touch panel, mounted on the control cabinet door, all measured values and the information on states of circuit components (switches, breakers, earthing devices) are displayed. Two redundant controllers S7-414 H perform signals processing from ODS 220 and ODS 500, one controller for each of ODS. In a similar way as in generating unit cabinets, TP 270 touch panels are mounted on doors of ODS cabinets, displaying the information on circuit components conditions and measured power parameters for the respective ODS. General HPP signals are linked to the CPU redundant controller. All controllers are connected together in the redundant optical ring network (Industrial Ethernet). The network also includes WinCC server, engineering stations and GPS receiver, which provides time synchronization of all controllers and WinCC servers accurate to 10 mcs using SICLOCK TM. All the computer systems (WinCC server, gateway server, operator and engineering stations) are incorporated into the local area network, implemented as a redundant optical ring. The information from controllers is transmitted to the redundant WinCC server. The server has six WinCC client stations connected to it. Redundant server comprises two computers, one of which operates as "Master". WinCC client stations receive necessary information from "Master". In case the "Master" fails, the second computer becomes "Master" and client stations are automatically routed to it. The information is displayed on WinCC client stations in forms of messages, mnemonic diagrams of circuit components states or temperature monitoring. Gateway server ensures safe bi-direction communication between the PCS and the LAN in the plant administrative building.
Main mnemonic diagrams of the PCS provide the operator with information on states of earthing devices, breakers and switches, as well as temperature, measured in different points of generator, bearing and thrust bearing. The displayed information also includes values of voltages between phases, phase currents, active and reactive power, both for each generating unit separately and total capacity of the Power Plant. When alarm or warning limits, preset for parameters, are violated, respective messages are generated and parameter values are highlighted with red (emergency) or yellow (warning) color. All messages are recorded in the archive. Information from the message archive can be exported to the text file. Reports of two types can be generated by the PCS: "HPP daily report" and "Generator room daily report".
Values of measured by the system parameters are automatically registered. Those parameters that are not measured by the system can be entered in manual mode by the operator. During the day the curve of HPP output capacity is generated. The curve, which has been estimated by the operator and sent by e-mail, is drawn on the same axes. All measured parameters are stored in the archive. Measured values for any time period with adjustable sampling interval can be also exported to the text file.
Diagnostics of the PCS hardware has been implemented. Diagnostics mnemonic diagram shows all PCS elements and highlights faulty elements with red color. PCS Information Subsystem has been designed in such a way, so that in the future it could be expanded by additional equipment and would provide a ground for creation of the control system. Works on PCS development were carried with an active assistance from Zeya HPP engineers. Start-up and adjustment works were performed by Sinetic together with Zeya HPP technicians during the period from August to September 2004. Zeya HPP PCS Information Subsystem was put into commercial operation on November 30th, 2004. However tight the schedule was for implementation of that complicated integrated object, and despite the requirement for commissioning works to be completed within 10 days while routine maintenance was being performed on the plant primary equipment, commissioning works were accomplished in full correspondence with the time schedule without any delays in equipment delivery or works execution. Photo gallery |
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HPP building adjoining the power dam;
Representation of parameters set.