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Three phase parameter data logging and fault detection using gsm technology
1.
INTERNATIONAL JOURNAL OF
ELECTRONICS AND International Journal of Electronics and Communication Engineering & Technology (IJECET), ISSN COMMUNICATION ENGINEERING & TECHNOLOGY (IJECET) 0976 – 6464(Print), ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), © IAEME ISSN 0976 – 6464(Print) ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), pp. 324-332 IJECET © IAEME: www.iaeme.com/ijecet.asp Journal Impact Factor (2012): 3.5930 (Calculated by GISI) ©IAEME www.jifactor.com THREE PHASE PARAMETER DATA LOGGING AND FAULT DETECTION USING GSM TECHNOLOGY 1 2 Sushama S. Kagde Prof. Deshmukh B. T. (M.E. Student) (Assistant Professor) E & TC Department E & TC Department JNEC, Aurangabad, India JNEC, Aurangabad, India 1 2 sush_sanju@rediffmail.com BAPU_DESH@rediffmail.com ABSTRACT World’s 90-95% industry works on power. Power is the heart of today’s industrial and commercial revolution. It is generated conventionally as well as some natural resources are used in order to fulfil today’s power wants. The hydro power stations are the main resources of the electricity and power. Wind power station and solar power generation are some of another source. Bio gas power station may also be there. Still as for as the usage increases, the generation cannot be increased in that proportion. Hence there is always shortage of electricity. Hence we have to manage the usage of electricity in order to minimize the shortages. Hence the voltage, current and power factor are to be monitored. This will help to minimize the power loss due to poor power factor. Keywords- GSM, Power Factor, Microcontroller, ADC, ALP I. INTRODUCTION In day to day life how much electricity is important is very well known to all. Energy utilization gets increased but generation has some limits. In such conditions it is must to save the energy in any way. Today the use of electricity is increased in a great extent but generation of energy is not in that proportion. So whatever the energy is there we have to save it which was the primary need. Generally saving of energy depends on the “power factor”. So by improving power factor we can save energy. But how it can be done? So it is accomplished using a circuit which is used to control and improve the power factor. Mainly Power factor describes the relationship between real and apparent power of alternating current (AC) power systems. In an AC power system, current may flow into and back out of a load without delivering any energy. This reactive current gives rise to 324
2.
International Journal of
Electronics and Communication Engineering & Technology (IJECET), ISSN 0976 – 6464(Print), ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), © IAEME “apparent power” which is larger than the actual power consumed. Power factor is expressed as the ratio of the actual power to the apparent power. A power factor of 1.0, or “unity” is desirable because it means that all the power delivered to the load is “real power” and there is no reactive current component to the load. As the reactive current and apparent power increase, power factor is expressed as a smaller decimal. Also the various parameters of the three phase motoring and controlling is also important. But it is not possible to monitor the parameters continuously by human being. So full fill both the requirements the “The three phase data logging and fault detection using wireless technology” is developed. II. DEVELOPMENT OF SYSTEM Mainly the system consists of the two parts one is the master station part and other is the slave station part. And the data transfer is done by using the master slave communication protocol. For the fast and efficient data transferring the serial data communication is used. This accomplished by using RS 485 and RS 232 serial interference IC’s. The data analysis and processing is done with the help of assembly language programming. For displaying the measured values of the three phase parameters the 7 segment display is used at the both stations. The type of the display is 16*2 character display which is able to show the values of the voltage, current, power factor energy units distributed at master station and consumed energy units at slave stations. According to the difference in the units of master and slave station the message was send to the authorised person. Figure 2.1: Block Diagram of 3- phase parameter Data Logging using wireless Technology- Master Station Above figure shows the system developed for the measurement of the parameters of the three phases that is voltage, current and power factor at master station .The system consist of the major functioning blocks which are used to perform the specific functions. Following are the major blocks 325
3.
International Journal of
Electronics and Communication Engineering & Technology (IJECET), ISSN 0976 – 6464(Print), ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), © IAEME 1) Potential transformer 2) Current transformer 3) Signal Conditioning 4) Analog to Digital Converter 5) Microcontroller 6) Master-Slave Communication Protocol The potential transformer and current transformer are used to sense the voltage and current of the three phases. The sensed voltage and current are then given to the signal conditioning block at which the main three operations takes place- filtering, amplifying and provides the isolation between the previous and next stage of the system. The output of the signal conditioning is in the analog form for further processing it is necessary to convert the analog signal into digital one. To perform the same function analog to digital converter is used. The digital output is then processed by the microcontroller. At the microcontroller with the help of the assembly language programming the data send to the specific authenticate person on his/her mobile. So at the far distance also we can be able to monitor the parameters of the three phases. It also possible to detect the electricity theft using the same system. The slave station system is also same as per the master station so the same working will be taken place at the master station also. Following figure shows the slave station block diagram. For the data transferring from slave to master RS 485 ModBus Communication is used while at the Master station for the communication RS 232 is used. Figure 2.1: Block Diagram of 3- phase parameter Data Logging using wireless Technology- Slave Station III. COMPLETE BASE UNIT ROUTINE The assembly programming is used for the base unit functioning. It controls the flow of data from the transducer level to the wireless communication module. The complete Base Unit Flow chart at master and slave station is as follows: 326
4.
International Journal of
Electronics and Communication Engineering & Technology (IJECET), ISSN 0976 – 6464(Print), ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), © IAEME 3.1 At master station 327
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International Journal of
Electronics and Communication Engineering & Technology (IJECET), ISSN 0976 – 6464(Print), ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), © IAEME 328
6.
International Journal of
Electronics and Communication Engineering & Technology (IJECET), ISSN 0976 – 6464(Print), ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), © IAEME 3.2 At Slave Station 329
7.
International Journal of
Electronics and Communication Engineering & Technology (IJECET), ISSN 0976 – 6464(Print), ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), © IAEME IV. SYSTEM PERFORMANCE Below are some of the possible faulty conditions monitored, analysed and tabularised. A. Case 1 Table 4.1 Voltage, current and power factor readings. Phase Master energy units Slave energy units SMS status on (kW/hr) (kW/hr) SIM Phase R 20 18 Phase Y 21 21 YES Phase B 22 22 In the above table, Phase R exceeds the limit of tolerance at the slave end i.e. slave reading is less than master. It indicates that there is some power theft or illegal use of electricity at that phase. Hence SMS status becomes active and is send to a responsible number. B. Case 2 Table 4.2 Voltage, current and power factor readings. Phase Master energy units Slave energy units SMS status on (kW/hr) (kW/hr) SIM Phase R 22 22 Phase Y 23 22 YES Phase B 24 24 In the above table, Phase Y exceeds the limit of tolerance at the slave end that is salve reading is 1 unit less than master. It indicates that there is some power theft or illegal use of electricity at that phase. Hence SMS status becomes active and is send to a responsible number. C. Case 3 Table 4.3 Voltage, current and power factor readings. Phase Master energy units Slave energy units SMS status on (kW/hr) (kW/hr) SIM Phase R 19 19 Phase Y 22 22 YES Phase B 20 18 In the above table, Phase B exceeds the limit of tolerance at the slave end that is slave reading shows that it has 2 units less than master. It indicates that there is some power theft or illegal use of electricity at that phase. Hence SMS status becomes active and is send to a responsible number. 330
8.
International Journal of
Electronics and Communication Engineering & Technology (IJECET), ISSN 0976 – 6464(Print), ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), © IAEME D. Case 4 Table 4.4 Voltage, current and power factor readings. Phase Master energy units Slave energy units SMS status on (kW/hr) (kW/hr) SIM Phase R 22 20 YES Phase Y 21 17 YES Phase B 20 18 YES In the above table, all the three phases exceed the limit of tolerance at the slave end. It indicates that there is some power theft or illegal use of electricity at that phase. Hence SMS status of all the phases become active and is send to a responsible number. E. Case 5 Table 4.5 Voltage, current and power factor readings. Phase Master energy units Slave energy units SMS status on (kW/hr) (kW/hr) SIM Phase R 24 23 Phase Y 20 18 YES Phase B 20 20 In the above table, phase R and Y exceed the limit of tolerance at the slave end. It indicates that there is some power theft or illegal use of electricity at that phase. Hence SMS status becomes active and is send to a responsible number. F. Case 6 Table 4.2 Voltage, current and power factor readings. Phase Master energy units Slave energy units SMS status on (kW/hr) (kW/hr) SIM Phase R 22 22 Phase Y 20 19 YES Phase B 19 17 In the above table, phase Y and B exceed the limit of tolerance at the slave end. It indicates that there is some power theft or illegal use of electricity at that phase. Hence SMS status becomes active and is send to a responsible number. V. CONCLUSION Due to the system hardware it is possible to locate the area of illegal use of the electricity. Also Power factor monitoring provision is available which is responsible for energy saving. For collecting the information regarding to the parameters and energy utilization Mod-Bus 485 is used which gives fast and efficient serial communication remotely. The system hardware is user friendly and flexible as per our application requirement. We can increase the number of slave stations connected easily. 331
9.
International Journal of
Electronics and Communication Engineering & Technology (IJECET), ISSN 0976 – 6464(Print), ISSN 0976 – 6472(Online) Volume 3, Issue 3, October- December (2012), © IAEME REFERENCES Journal Papers: [1] G M Gear, J T Gleaves “Versatile automatic data logging and real-time analysis system” . [2] V. Konstantakos, Th. Laopoulos “Self-Evaluation Configuration for Remote Data Logging Systems”, 1-4244-1348- 6/07/$25.00 ©2007 IEEE. Proceedings Papers: [3] Wen-yun H u a n g , z h e n - z h o n g Wang “Application of The Signal Processor In data Process” proceedings of ICSP ’ 96-0-7803-2912-0 Books: [4] Muhammad Ali Mazidi, Janice Gillispie Mazidi, Rolin D. Mckinlay “The 8051 Microcontroller and Embedded Systems” Second Edition,Prentice Hall, Pp 181-403. [5] Greg Pery, “Visual Basic 6 in 21 Days”, First Edition, SAMS Techmedia, Pp 96-114, 261-314 . 332
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