1、ATMAR: ANSYS Based Temperature Monitoring and Alarm System for RingMain UnitMa Zhi Hao Shao Ya Ning Yi Chen Hui Yu Meng TingSchool of electrical engineering School of electrical engineering Computer School College of Foreign Language Central WuHan University WuHan University WuHan University China N

2、ormal University Wuhan 430072 China Wuhan 430072 China Wuhan 430072 China Wuhan 430079 China437079557 shinley900815 386061587 792151894AbstractPower 10KV ring main unit is an important part of power supply network of city. The running status of the equipment inside is directly related to the reliabi

3、lity of city power supply system. The space of RMUs cabinet is relatively small and the equipment inside usually operates at high temperature. Checking the equipment status by manually opening the ring counter one by one is not realistic and automation deployment of ATMAR must be designed. This pape

4、r apply the ANSYS analysis to the Temperature monitoring alarm system for RMU and developed a ANSYS Based Temperature Monitoring and Alarm method for Ring Main Unit(ATMAR, the structure and the workflow of ATMAR is described details. Experimental results show that ATMAR can not only accurately monit

5、or but also timely warn the overheating for RMU.Keywords- ANSYS analysis, Ring Main Unit, Temperature MonitoringI.I NTRODUCTIONWith the rapid development of market economy, urban high-rise buildings and the continuous construction of large buildings, electricity load is more and more concentrated; t

6、he requirements from users regarding the quality and reliability of power supply are also increasing. It has been more and more difficult for the traditional Radiation-and trunk-type networked power supply method to meet the requirements of automatic power distribution. The use of ring power distrib

7、ution network has become a promising solution for this conflict. Ring Main Unit(RMU1, 2, a type of Ring network switching equipment, is widely used in Industrial and mining enterprises, High-rise buildings, Residential and schools for the power supply of 10kv distribution system and Final distributi

8、on.However, Most RMUs do not have temperature control mechanism. Overheating and other problems hinder the further application of RMUS. So how to automate the temperature control3 for RMU becomes the primary problem for solution.ANSYS4 is a large general-purpose finite element analysis software, whi

9、ch can be widely used in financial structure, fluid, electric field, magnetic field, and the sound field analysis. This paper apply the ANSYS analysis to the Temperature monitoring alarm system for RMU and developed a ANSYS Based Temperature Monitoring and Alarm method for Ring Main Unit(ATMAR, whic

10、h can not only accurately monitor but also timely warn the overheating for RMU.II.S UMMARY OF ATMARATMAR for the protection of data sources5, in the design phase has been Fixed, if you need new data in the field, according to the RMU, the use of existing data and computing components, custom output

11、node Fruit. all the known data into telemetry analog form, with the Provide a standard computing components include add, subtract, multiply, divide, take the absolute Value, square root, square and so on, the user needs of the proposed algorithm, by the works of people Members of the agreement set t

12、he modular computing, and this is the original modular algorithm Management.A.The deployment of ATMARThe space of RMUs cabinet is relatively small and the equipment inside usually operates at high temperature. Checking the equipment status by manually opening the ring counter one by one is not reali

13、stic and automation deployment of ATMAR must be designed. Generally speaking, The ATMAR system can be distributed deployed like figure 1._ 978-1-61284-240-0/11/$26.00 ©2011 IEEEFigure 1. The deployment of ATMARATMAR sensor is installed in the RMU, continuously collecting temperature signal and

14、sending them to Monitoring center through internet with GPRS technology. The monitoring center collects the temperature signals received and analyzes them using ANSYS technology. B. The structure of ATMAR sensorThe ATMAR sensor6, 7 contains Multiple temperature probes(TP like figure 2 using infrared

15、 technology. temperature sensor used by the U.S. company's new temperature-sensing device DSl8820. Temperature detection circuit produced by Dallas 1-Wire Digital Temperature Sensor Interface DSl88208, it uses a 3-pin T0-92 package: Temperature measurement range -55 +125 . Programmable 9 to 12-b

16、it resolution. Field 1-Wire temperature directly transmitted figures. Greatly improve the system interference. More DSl8820 Parallel to 3 or 2 bus. Just a port line CPU can communicate with multiple DSl8820, less occupied port microprocessor can save a lot ofleads and logic circuits. Temperature det

17、ection circuit shownin Figure 2, the host control DSl8820 realize temperatureconversion, DSl8820 using an external power supply mode,the VDD side with 3 v 5.5 V power supply. thesetemperature probes distributed among the cabinet of RMU,are concentrated to data collection and transceiver module(DCT,

18、which is responsible for gathering data from probes and transferring them to monitoring center for further analysis.Figure 2. The stureture of ATMAR sensor The GRPS module is attached to DCT for Internet accessing. GPRS DTU for a variety with a RS-232, RS-485 standard communication interface, sensor

19、s, smart devices and industrial control equipment to provide transparent data transmission channel. It does not upload and equipment issued to interpret the data packets and processing, only the implementation of user data packets TCP / UDP data packets with the unpacking processing, enabling transp

20、arent data transmission capabilities.C. The structure of Monitoring CenterThe Monitoring Center contains some function modules, which are interconnected like figure 3, including Data Fusion Module(DFM, ANSYS based Data analysis module(ADAM, Display and output modules(DOM, and Temperature Alarm Modul

21、e(TAM. The workflow ofMonitor center holds linear features. First, DFM collects the data received and integrates them according to the prescribed format. Then the ADAM analyzes the output of DFM using ANSYS. Finally, the result is sent to DOM for displaying and TAM for alarm. DOM provides three outp

22、ut models: Location display shows the location of the overheated RMUwith map data. Screen Display shows the state information on the screen. Printing outputs the state description in paper.Figure 3. the structure of Monitoring center ANSYS software9 includes three modules: pre-treatment module, Calc

23、ulation module and post-processing module. Pre-treatment module provides A powerful solidmodeling and meshing tools, the user can Facilitate theconstruction of the finite element model; analysis andcalculation modules include structural Analysis, fluiddynamics, electromagnetic field analysis, sound

24、fieldanalysis, Piezoelectric analysis and coupled multi-physics analysis, can simulate a variety of The interaction of physical media, with a sensitivity analysis and optimization analysis. Post-processing modules can result in color contour Show that gradient display, vector display, particle flow

25、trace shows three-dimensional cut Film shows, transparent and translucent display etc. Graphically displayed results can also be a chart, song Line form of display or output. Parametric Design Language (ANSYS Parametric Design Language, APDL, user interface design language (User Interface Design Lan

26、guage, UIDL and user-programmable features (User Programmable Features, UPFs. Among them, the first two can be classified as standard with features, the latter used for the non-standard features. In ATMAR, the thermal analysis Sub-function module and APDLis employed.III. T HE WORKFLOW OF ANSYS IN AT

27、MARThe thermal analysis of ANSYS10 can be divided into three steps: modeling, ANSYS model the Scene according to the data collected. Applying the load and getting the solution. Finally display the result through multiple methods.1 The modeling process can be further divided into five stepsaParameter

28、 determination. in this step, the critical parameters for ANSYS modeling is determined.bType definition. In this step, the pretreatment is executed, and some related types are defined.cDetermining the real constant used in the model.dDefinition of the thermal properties.It can be a constant or the o

29、ne varys with temperatureeCreate a geometric model and Mesh2Applying the load and getting the solution contains six steps:aDefine the analysis type. In this step, There are two options if the new thermal analysis is executed, then command ANTYPE, STATIC, NEW is available.and the GUI Order is Main me

30、nuSolutionAnalysis TypeRestart. Else command ANTYPE, STATIC RESET is executedbApplying the load. In this step five different loads can be appliedcDetermining the load choice available in this step.dDefining the analyzing optioneSave the model using SAVE commandfUse command SOLVE to find solution for

31、 the model described3Result display can be divided into two steps:a ANSYS writes the result to the .nrh filebProvide three types of visualization methods for result view.IV.CONCLUSIONRMU will be the development direction of the city grid, ring Network cabinet as the main ring power supply equipment,

32、 its role and importance becomes increasingly apparent. Research paper list some smart ring counter terminal unit, A centralized structure to the core digital signal processor can quickly Speed real-time power collection, analysis, computation and processing, in the far end Side to complete the basi

33、c requirements of many practical features, the flexibility to Used does not exceed the size of any two-four ring counter, and achieving, Temperature Monitoring. Experimental results show that ATMAR can not only accurately monitor but also timely warn the overheating for RMU.R EFERENCES1Wagenaars, P.

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