Hydropower station hydroelectric generating unit efficiency measuring system Xu Zhengqin, Wang Zhiguang Xu Ji Transformer Co., Ltd., Henan Xuchang 460, the softness of the water meter generator set attack rate measurement system, and its operation in the urban water supply system The meaning of the hydropower generating unit of the hydropower station is the basic power of the unit, which is the main technical and economic indicator for evaluating the advantages and disadvantages of the unit. The implementation of the power generation economic operation of the whole station of the hydropower station is based on the operational efficiency characteristics of the hydroelectric generating unit. Therefore, it is necessary to monitor the operating efficiency of the hydro-generator unit and the consumption of water flow on-line, both to monitor the flow value of the instantaneous flow rate and to calculate the flow rate for a certain period of time. Measure the price of the traffic. In order to guide the economic operation of the hydropower plant. This system is based on this need. The operating efficiency of the hydropower generating unit of the hydropower station developed. system. The large domestic and medium-sized hydropower stations in China have basically not established the measurement of the operating efficiency of the hydroelectric generating units. The reason is because it is transported in the economic mode of juice. 1+ attaches great importance to the operation of the water station; economic efficiency, large flow test, large flow path, water flow, secondary sensor manufacturing, processing and installation are all in question, so it is not well solved. 2 microcomputer hydropower station hydroelectric generating unit efficiency measurement system is the mountain In the work. Transmitter. Zhang transmitter. The pressure is a transmitter and other sensors and a microcomputer data acquisition and processing system. The principle of the whole measurement system of the principle of the water meter generator set efficiency measurement system 1. In order to solve the flow sensor of the hydro-generator unit, the function of the regularity of the pressure difference water flow of the turbine vortex 4 is adopted, and the differential pressure of the turbine is measured by the differential pressure transmitter, and then sent to the microcomputer for the differential pressure measurement. Process and numerically calculate the corresponding flow value. At the same time, the electric power transmitter integrated with the parameters such as voltage, current and power factor is used to detect the operating efficiency of energy conversion between the initial rate of the output of the hydropower station and the water consumption of the turbine. The measurement of the mouth pressure measures the hydro-generator set test in real time. The water consumption rate of power generation is the water consumption rate of power generation. The parameters of the economic and technical indicators such as the water consumption rate of the start-up, and the calculation of the proportion of the electricity and the water-children, or the calculation of the integral weight, the microcomputer's calculation function is used to accurately and quickly complete the data collected by the microcomputer through each sensor. After processing and transportation, the parameters of various economic and technical indicators can be displayed on the panel of the system measurement. The data collected by the microcomputer is often collected as a point, and 360 points are collected. The sampling period can be adjusted at will. Data 1 is stored in the soft hard disk memory of the microcomputer. You can remember to store 1 365 days of storage, and the economic parameters can be adjusted. Through the printer interface of the microcomputer. Transfer to the printer to set the various operating parameters at any time, or to print out the instantaneous, data or historical data. After the processing of the microcomputer. The data printed by the printer can appear in the form of a grid, or it can appear in the form of a coordinate, and is provided to the central dispatching room of the hydropower station for analysis and research. The microcomputer measurement system is also equipped with a 舫485 serial asynchronous communication port, which can send the economic and technical parameter data of the on-site field measurement to the system of data acquisition and observation through the microcomputer, and can measure the unit efficiency of the hydro-generator unit in real time. Cumulative power generation, daily water consumption, power generation, water consumption, water flow test, and power consumption, etc. 4 Conclusions Software and hardware development has been successfully put into operation, not only for the economic operation of large and medium-sized hydropower stations, but also for the current domestic railway sector water supply system and refining. The economic measurement control and economic operation of the Yanchang Station will play a good role. With the statistical measurement of the sub-sensor technology, the measurement and control of the accuracy meter flow will certainly progress. Liu Siyuan. Zhou Juan. Electrical Engineering Manual, Volume 1 Power System Volume. Beijing Machinery Industry Press. 19968. 2 China Electric Power Encyclopedia Editors Committee China Power Encyclopedia Hydroelectric Power Volume. Beijing China Electric Power Press, the design and development of transformers, the need to collect data to calculate the software structure calculation and control functions of the 3 system. In order to facilitate the debugging of the software, the call of the general subroutine and the expansion of the software, the application is designed as a module structure. All software can be divided into a part with different characteristics, namely system initialization and initial state display and keyboard waiting program key function application; result processing program, refer to the following program structure box. System software structure pivot 2. According to the data in the microcomputer measurement system, the cumulative amount of each parameter must be relied upon, and it is still accurate in the case of the loss of the mountain. The microcomputer vision system also has several fault diagnosis functions. It can diagnose the fault 1 of the standby sensor, including short circuit or over-range, and issue a warning sound and light accordingly. index parameter. The collection of these data is not only complete and accurate in real time. It also reflects the efficiency characteristics of the hydroelectric generating unit of the hydropower station. It reflects the economics of the hydro-generator unit, and stops the data from the computer. It can print the historical data and the current data and provide it to the central dispatching room of the hydropower station for analysis and research. At the same time, the 485 communication port can be used to transmit various technical data of the online measurement to the host computer at any time, so that the implementation of the economic operation of the hydropower station is well initialized. The initial state of the system is marked with a keyboard scan. The print program I end processing program key function is applied to the scan mode. Key Group Initialization, Technology Development and Application of High-power Uninterruptible Power Supply UPS in Start-up Relay Gan Jianghua 1. Yang Xiaohong 21. Xu Ji Group Power Co., Ltd., Xuchang, Henan 461000, China; 2 Xinjiang Electric Power Design Institute, Urumqi, Xinjiang 830002, China 1 Introduction Computer 1 network technology The development of modern global communication technology and high-precision industry is driving the information industry as never before, for example. The switching of the starting power factor compensation capacitors of the large-scale electric motor of the lightning field will directly affect the power supply quality, causing voltage fluctuation pulse interference and even power supply interruption. A large number of non-linear loads, such as phase-controlled rectifier switching power supplies, are connected to the power electronics, adding harmonics to the grid, and generating electromagnetic interference and pollution from the grid. 1 It is more and more widely used in various fields of the national economy with its high-quality AC power supply with stable voltage and stable operating frequency and continuous power supply without interruption. along with. The technology of 8 products is constantly developing and perfecting, and now the products of Zheng 8 have become increasingly mature. Especially for large ones. In terms of the power supply, the average time between failures of the single machine has reached 200 vomits. For the power supply mode with output multi-machine redundancy type, the average time between failures can reach 10001. The superior technical indicators that can be achieved in modern times ensure that the power quality requirements of the electrical equipment are guaranteed under any harsh conditions of the commercial power. These technical requirements mainly include the influence of 1 wide voltage fluctuation of the mains; (2) the influence of the mains voltage waveform distortion; 3 the influence of the phase + balance of the mains; 0 output card stability accuracy, 3 output voltage waveform distortion 3 current output frequency stability; now 3 output voltage balance; power factor current input harmonic component; 10 switching time after market power failure; 15 overload efficiency of the whole machine operating efficiency output 0 coefficient of output current; After the mains power failure, the fertilizer maintains the working time; whether the port has network management network communication and information communication based on the basis; other indicators have detailed requirements in the national standard, 84715. 2.15 system working mode development static type 5 according to its The working mode can be divided into an online backup circuit and a submerged boost isolation circuit or this output boost isolation circuit. 6 technology development from the original simple analog control method to the commonly used semi-analog control and semi-digital control methods, and now
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Hydroelectric power station hydroelectric generating unit efficiency measuring system