CN102435871A - On-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization - Google Patents
On-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization Download PDFInfo
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- CN102435871A CN102435871A CN2011102595709A CN201110259570A CN102435871A CN 102435871 A CN102435871 A CN 102435871A CN 2011102595709 A CN2011102595709 A CN 2011102595709A CN 201110259570 A CN201110259570 A CN 201110259570A CN 102435871 A CN102435871 A CN 102435871A
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Abstract
The invention relates to an on-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization. The on-line monitoring system comprises a back-stage management server, wherein the back-stage management server is connected to a station control central unit; terminal devices are connected to the station control central unit; synchronous data of running parameters of the electric arresters which are in a network are collected by the terminal devices; power is supplied to the terminal devices by remote optical fibers of the arrester station control central unit; optical fiber communication is utilized to transmit the data; the station control central unit has a GPS time service function and is used for supplying synchronously collected pulses to the terminal devices distributed in different places, thereby realizing synchronous data collection; and inspection personnel can conveniently perform field check and state display on the running parameters of a plurality of local arresters by virtue of a man-machine interface of the station control central unit. Meanwhile, the collected data can be transmitted to the back-stage management server through the optical fibers or in a backup GPRS (General Packet Radio Service) wireless manner; therefore, the system has the characteristics of reducing the working strength of maintenance personnel and finding out potential hidden dangers of the arresters in time and is high in safety.
Description
Technical field
The invention belongs to power equipment on-line monitoring technique field, be specifically related to a kind of based on the synchronous electric power lightning arrester data acquisition on-line monitoring system of GPS.
Background technology
In recent years; Cause circuit breaker trip for reducing transmission line of electricity or transformer station's Lightning Over-voltage; Voltage levels transmission line of electricity lightning arrester has been brought into play enormous function, has obtained using widely, and the quality of metal oxide (MOA) lightning arrester performance directly influences safe operation of power system.Because the MOA lightning arrester under the high-tension effect of power frequency, can wear out for a long time gradually, be in operation punch through damage possibly take place; Protection feature descends; Then will produce extremely serious consequence,, must carry out strict on-line monitoring the MOA lightning arrester for ensureing the safe operation of MOA lightning arrester.
At present; Monitoring MOA lightning arrester method adopts lightning arrester monitor to realize on-line monitoring; Its principle of work is under normal working voltage; The variation of the leakage current through lightning arrester is recorded by reometer, when flowing through powerful action current, will be transferred to counter loop from the leakage current measurement loop, and the action utilization of counter realizes the number of times of operation of recording through the energy of action current.Yet because lightning arrester monitor is installed in the shaft tower eminence, the lightning arrester parameter is checked meter bigger with the service work difficulty.Existing method is to adopt the lightning arrester of rotating at regular intervals, and shaft tower inspection in annual standard maintenance, cleaning lightning arrester and earthing device.This method lightning arrester renewal cost is high, labor intensity is big and it is long in time limit to need application to have a power failure, and is unfavorable for the economy and the stable operation of transmission line of electricity.At present most of lightning arrester monitor on-line monitoring that adopts all is independent installation, regularly checks or write down lightning arrester ruuning situation do not have the data remote function to the scene by the personnel of patrolling and examining; Can not form data sharing; To the substation that lightning arrester is relatively concentrated, also be unfavorable for management, the mode that also has part producer to adopt the terminal to add GPRS wireless data module realizes data remote; Centralized management; But because complicacy and the GPRS stability of data transmission and the terminal powerup issue of high-voltage fence and transformer station's electromagnetic environment, the reliability of this monitoring mode is had a greatly reduced quality, moreover each on-line monitoring device data acquisition does not realize clock synchronization; The data of being gathered are not the data of same time, the reference property variation of statistical study.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art; The object of the present invention is to provide a kind ofly, as the synchronous acquisition signal, adopted the Optical Fiber Transmission data with the gps clock pulse based on the synchronous electric power lightning arrester data acquisition on-line monitoring system of GPS; Supply power to monitoring terminal through optical fiber; As subsequent use communication mode, monitor near a plurality of electric power lightning arresters of high-voltage fence or transformer station with GPRS wireless data module in real time, have the work of maintenance personnel of reduction intensity; Can in time find the potential risk of lightning arrester existence and safe characteristics, and in monitoring electric power lightning arrester parameter, line voltage and harmonic wave carried out synchronous monitoring.
To achieve these goals; The technical scheme that the present invention adopts is: a kind of based on the synchronous electric power lightning arrester data acquisition on-line monitoring system of GPS; Include back-stage management server, back-stage management server links to each other with station control center cell, is connected with end device on the control center cell of standing;
Described station control center cell includes power supply unit; The electrical interface of power supply unit is connected with multi-channel optical fibre interface unit, first microprocessing unit and optical fiber remote power supply unit respectively; The NIU end of first microprocessing unit is connected with the multi-channel optical fibre interface unit; The PB port of first microprocessing unit links to each other with the optical fiber remote power supply unit, and the PA port of first microprocessing unit links to each other with the LCD display unit, and the serial port B interface end of first microprocessing unit links to each other with the GPRS interface unit; The serial port C port of first microprocessing unit links to each other with the RS232 communication interface, and the serial port D port of first microprocessing unit links to each other with the gps clock unit;
Described first microprocessing unit (6) all adopts RCM6700 embedded microprocessor module with second microprocessing unit (12).
Described first microprocessing unit (6) all adopts RCM6700 embedded microprocessor module with second microprocessing unit (12).
Described end device includes second microprocessing unit; The digital input/output terminal PA port of second microprocessing unit is connected with data acquisition unit with the PB port; The aanalogvoltage mutual inductor input port of data acquisition unit is connected with voltage transformer (VT); Data acquisition unit the analog current input end be connected with low current sensor, the temperature survey end of data acquisition unit is connected with temperature sensor, the power end of data acquisition unit is connected with optical fiber power taking and power circuit; Optical fiber power taking and power circuit link to each other with the power end of second microprocessing unit; Optical fiber power taking and power circuit link to each other with the power end of optical fiber communication and power supply interface unit, and optical fiber communication and power supply interface unit link to each other with the network-side of second microprocessor unit again, and the serial interface circuit end of second microprocessing unit links to each other with the RS232 interface circuit.
The quantity of the end device that connects on the described station control center cell has one at least.
Described station control center cell can also synchronous monitoring line voltage and harmonic voltage in monitoring lightning arrester parameter.
Described first microprocessing unit and second microprocessing unit all adopt RCM6700 embedded microprocessor module.
The invention has the beneficial effects as follows:
1) the control center cell of standing adopts the GPS time service, for the end device of a plurality of lightning arresters in part provides the synchronous acquisition pulse, realizes the synchronous data collection of the lightning arrester parameter of a plurality of end devices, can carry out data transmission through optical fiber with a plurality of lightning arrester monitoring terminals;
2) the control center cell of standing supplies power for far-end lightning arrester monitoring terminal set through remote power feeding end and optical fiber remote power supply unit, has improved the Signal Spacing of arrester on-line monitoring system itself, has improved the reliability of system itself;
Simultaneity factor adopts high performance microprocessor; Has data acquisition unit; Realized that to arrester resistance current and capacity current, voltage harmonic, discharge time, discharge time, the isoparametric monitoring of temperature the performance of anticipation lightning arrester is in advance found the lightning arrester of incipient fault;
3) through the special-purpose lightning arrester on-line monitoring management software on the back-stage management server, realized the unified management to the lightning arrester operational factor that is distributed in different regions, the fault lightning arrester of anticipation potential risk avoids electric power accident to take place in advance;
4) realized the unified field management of lightning arrester on-Line Monitor Device in the transformer station or in the high-voltage fence zone is convenient to patrol and examine personnel's local search through station control center cell, in time understood the lightning arrester duty;
5) the control center cell built-in MODBUS communication protocol of standing can be connected with complex automatic system, and arrester on-line monitoring system is included in; Control center fixture and the back-stage management server of standing also has the GPRS wave point simultaneously normally through Optical Fiber Transmission, can Monitoring Data be sent to remote control center through wireless mode; Standing the control center fixture can cascade, so that the lightning arrester monitoring terminal number that expansion can be monitored; The control center cell of standing has subsequent use RS232 communication interface, the wireless connections of support and lightning arrester monitoring terminal.
6) have optical fiber communication and power supply interface unit and GPRS interface unit through station control center cell, can Monitoring Data be sent to the remote background management server through optical fiber or wireless mode.
7) through the employing of this product, can greatly improve the reliability of electrical network and transformer station's lightning-protection system, make up a strong intelligent grid.
With the gps clock pulse as the synchronous acquisition signal; Adopt the Optical Fiber Transmission data, supply power to monitoring terminal through optical fiber, with GPRS wireless data module as subsequent use communication mode; Monitor near a plurality of electric power lightning arresters of high-voltage fence or transformer station in real time; Have and reduced work of maintenance personnel intensity, in time find the potential risk that lightning arrester exists, safe characteristics.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of control center cell 2 in station of the present invention.
Fig. 3 is an end device 3 of the present invention.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are done further explain.
Referring to Fig. 1, a kind ofly include back-stage management server 1 based on the synchronous electric power lightning arrester data acquisition on-line monitoring system of GPS, back-stage management server 1 links to each other with station control center cell 2, and standing to control on the center cell 2 is connected with end device 3; Realize that through the end device 3 that is distributed in high-voltage fence or high voltage substation lightning arrester on-line monitoring on every side its acquisition parameter comprises: arrester resistance current and capacity current, voltage harmonic, discharge time, discharge time, temperature etc. to the synchronous acquisition in net circuit lightning arrester operational factor; The end device 3 of lightning arrester on-line monitoring is by the remote fiber power supply on the station control center cell 2 of lightning arrester on-line monitoring; Data transmission adopts optical fiber communication simultaneously; The control center cell 2 of standing has GPS time service function, can the synchronous acquisition pulse be provided for the end device 3 that is distributed in everywhere, realizes synchronous data collection; The control center cell 2 of standing has man-machine interface; The personnel that can conveniently patrol and examine realize the scene inquiry of a plurality of lightning arrester operational factors in part is shown with state, simultaneously can also perhaps backing up the GPRS wireless mode is sent to lightning arrester back-stage management server 1 through optical fiber with the data of gathering; Lightning arrester moves on back-stage management server 1 has special-purpose lightning arrester on-line monitoring management software; The supporting database function; Can be distributed in the lightning arrester operational factor of each point through software query, the data of the end device collection of a plurality of lightning arresters are managed; The lightning arrester that has hidden danger in the discovery system in advance improves intelligent grid reliability of operation and security;
The quantity of the end device 3 that connects on the described station control center cell 2 has one at least.
Referring to Fig. 2; Described station control center cell 2 includes power supply unit 4; The electrical interface of power supply unit 4 is connected with multi-channel optical fibre interface unit 5, first microprocessing unit 6 and optical fiber remote power supply unit 7 respectively; Adopt the fiber optic data communication at 5 realizations of multi-channel optical fibre interface unit and each lightning arrester on-line monitoring terminal of this transformer station; For each lightning arrester on-line monitoring terminal of this transformer station power supply is provided through optical fiber remote power supply unit 7 and multi-channel optical fibre interface unit 5 simultaneously, the NIU end of first microprocessing unit 6 is connected with multi-channel optical fibre interface unit 5, and the PB port of first microprocessing unit 6 links to each other with optical fiber remote power supply unit 7; The PA port of first microprocessing unit 6 links to each other with LCD display unit 8; The serial port B mouth end of first microprocessing unit 6 links to each other with GPRS interface unit 9, and the serial port C mouth end of first microprocessing unit 6 links to each other with RS232 communication interface 10, and the serial port D mouth end of first microprocessing unit 6 links to each other with gps clock unit 11; The lightning arrester data that each lightning arrester on-line monitoring terminal sends through optical fiber are delivered to the first microprocessor unit 6 of station control center cell 2; Through software algorithm, analysis, statistical treatment; Send LCD display unit 8 to show result, also can deliver to platform management server 1 or deliver to local electric integrated automatic system simultaneously through multi-channel optical fibre interface unit 5 through RS232 communication interface 10; These data can also be delivered to long-range platform management server 1 through subsequent use GPRS interface unit 9 simultaneously, realize sharing of lightning arrester online monitoring data; Power supply unit 4 provides inner required various DC voltages for station control center fixture, and its externally fed is provided by transformer station's accumulator or transformer station's 220V AC power; The data that each station control center cell 2 can be gathered maximum No. 12 lightning arrester on-line monitoring end devices simultaneously; Stand control center cell 2 can cascade so that the number of the end device 3 of expansion lightning arrester on-line monitoring; Electric power lightning arrester on-line monitoring intelligent terminal through these station 2 pairs of transformer stations of control center cell carries out local collecting and distributing control and management; Lightning arrester parameter to transformer station is carried out real time on-line monitoring; Fault and hidden danger that discovery is in time caused by lightning arrester parameter deterioration; The personnel that conveniently patrol and examine regularly patrol management transformer station lightning arrester at the network operation state, improve intelligent grid reliability of operation and security.
Referring to Fig. 3; Described end device 3 includes second microprocessing unit 12; The digital IO port PA of second microprocessing unit 12 is connected with data acquisition unit 13 with the PB end; The aanalogvoltage mutual inductor input port of data acquisition unit 13 is connected with voltage transformer (VT) 14, and voltage transformer (VT) 14 is gathered the voltage and the harmonic voltage of the relevant lightning arrester end of substation equipment, and the analog current input end of data acquisition unit 13 is connected with low current sensor 15; Low current sensor 15 acquisition stream are crossed the leakage current of the relevant lightning arrester of substation equipment; The temperature survey end of data acquisition unit 13 is connected with temperature sensor 16, and temperature sensor 16 is gathered working temperature and the environment temperature on the relevant lightning arrester of substation equipment, then the simulating signal that collects is delivered to data acquisition unit 13 and carries out signal condition; Signal transformation and then deliver to second microprocessing unit 12; Handle through software algorithm, to measuring to such an extent that data such as current in resistance property, capacity current are proofreaied and correct, to improve the measuring accuracy of device; Then the data that measure are compared with the industry standard threshold value; Judge whether it exists incipient fault hidden danger, simultaneously corresponding data and information are sent to control center through optical fiber communication and power supply interface unit 18 or RS232 interface circuit 19, the power end of data acquisition unit 13 is connected with optical fiber power taking and power circuit 17; Optical fiber power taking and power circuit 17 link to each other with the power end of second microprocessing unit 12; Optical fiber power taking and power circuit 17 link to each other with the power end of optical fiber communication and power supply interface unit 18, and optical fiber communication and power supply interface unit 18 link to each other with the network service end of second microprocessing unit 12 again, and the serial line interface end of second microprocessing unit 12 links to each other with RS232 interface circuit 19.Through optical fiber communication and power supply interface unit 18, combine optical fiber power taking and power circuit 17 to realize opto-electronic conversion again, convert light signal to current signal, through needed various DC voltages of generator such as power converting circuits.Electric power lightning arrester on-line monitoring intelligent terminal through this optical fiber power supply carries out real time on-line monitoring to the lightning arrester parameter of transformer station, in time finds the fault and the hidden danger that are caused by lightning arrester parameter deterioration.
Principle of work of the present invention is:
End device is captured in the synchrodata of net electric power lightning arrester operational factor; End device is by the power supply of lightning arrester station control center cell remote fiber, and data transmission adopts optical fiber communication, and the control center cell of standing has GPS time service function; For the end device that is distributed in everywhere provides the synchronous acquisition pulse; Realize synchronous data collection, the man-machine interface of the control center cell of stand is is conveniently patrolled and examined personnel the scene inquiry of a plurality of lightning arrester operational factors in part is shown with state, simultaneously can also perhaps backing up the GPRS wireless mode is sent to back-stage management server through optical fiber with the data of collection; Operation has special-purpose lightning arrester on-line monitoring management software on the back-stage management server; The supporting database function can be distributed in the lightning arrester operational factor of each point through software query, and the data of a plurality of end device collections are managed; The lightning arrester that has hidden danger in the discovery system in advance improves intelligent grid reliability of operation and security;
Stand and control center cell
Stand the control center cell with the synchronizing pulse of gps clock pulse unit as each end device data acquisition of this transformer station; The fiber optic data communication of the end device of multi-channel optical fibre interface unit and this each lightning arrester of transformer station; For the end device of this each lightning arrester of transformer station power supply is provided through optical fiber remote power supply unit and multi-channel optical fibre interface unit; The lightning arrester data that end device sends through optical fiber are delivered to the microprocessor unit at control center, station; Through software algorithm, analysis, statistical treatment; Send the LCD display unit to show result, also can deliver to remote monitoring backstage central server or deliver to local electric integrated automatic system simultaneously through the multi-channel optical fibre interface unit through the RS232 communication interface; These data can also be delivered to long-range wireless back-stage management server through subsequent use GPRS interface unit simultaneously, realize sharing of lightning arrester online monitoring data;
End device
Voltage transformer (VT) on the end device is gathered the voltage and the harmonic voltage of the relevant lightning arrester end of substation equipment; The low current sensor acquisition stream is crossed the leakage current of the relevant lightning arrester of substation equipment, and temperature sensor is gathered working temperature and the environment temperature on the relevant lightning arrester of substation equipment, then the simulating signal that collects is delivered to data acquisition unit and carries out signal condition; Signal transformation; Deliver to microprocessor unit again, handle through software algorithm, measuring to such an extent that data such as current in resistance property, capacity current are proofreaied and correct; To improve the measuring accuracy of device; Then the data that measure are compared with the industry standard threshold value, judge whether it exists incipient fault hidden danger, simultaneously with corresponding data and information through optical fiber communication and power supply interface or the transmission of the RS232 communication interface control center cell that arrives at a station.
Claims (3)
1. one kind based on the synchronous electric power lightning arrester data acquisition on-line monitoring system of GPS; It is characterized in that; Comprise including back-stage management server (1), back-stage management server (1) links to each other with station control center cell (2), is connected with end device (3) on the control center cell (2) of standing;
Described station control center cell (2) includes power supply unit (4); The electrical interface of power supply unit (4) is connected with multi-channel optical fibre interface unit (5), first microprocessing unit (6) and optical fiber remote power supply unit (7) respectively; The NIU end of first microprocessing unit (6) is connected with multi-channel optical fibre interface unit (5); The PB port of first microprocessing unit (6) links to each other with optical fiber remote power supply unit (7); The PA port of first microprocessing unit (6) links to each other with LCD display unit (8); The serial port B interface end of first microprocessing unit (6) links to each other with GPRS interface unit (9), and the serial port C port of first microprocessing unit (6) links to each other with RS232 communication interface (10), and the serial port D port of first microprocessing unit (6) links to each other with gps clock unit 11;
Described end device (3) includes second microprocessing unit (12); The digital input/output terminal PA port of second microprocessing unit (12) is connected with data acquisition unit (13) with the PB port; The aanalogvoltage mutual inductor input port of data acquisition unit (13) is connected with voltage transformer (VT) (14); Data acquisition unit (13) the analog current input end be connected with low current sensor (15); The temperature survey end of data acquisition unit (13) is connected with temperature sensor (16); The power end of data acquisition unit (13) is connected with optical fiber power taking and power circuit (17), and optical fiber power taking and power circuit (17) link to each other with the power end of second microprocessing unit (12), and optical fiber power taking and power circuit (17) link to each other with the power end of optical fiber communication and power supply interface unit (18); Optical fiber communication and power supply interface unit (18) link to each other with the network-side of second microprocessing unit (12) again, and the serial interface circuit end of second microprocessing unit (12) links to each other with RS232 interface circuit (19).
2. according to claim 1 a kind ofly it is characterized in that based on the synchronous electric power lightning arrester data acquisition on-line monitoring system of GPS, the quantity that described station control center cell (2) is gone up the end device (3) that connects has one at least.
3. according to claim 1 a kind ofly it is characterized in that based on the synchronous electric power lightning arrester data acquisition on-line monitoring system of GPS, described first microprocessing unit (6) all adopts RCM6700 embedded microprocessor module with second microprocessing unit (12).
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