CN205209534U - Distribution transformer network management system based on zigbee and RFID technique - Google Patents
Distribution transformer network management system based on zigbee and RFID technique Download PDFInfo
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- CN205209534U CN205209534U CN201520905439.9U CN201520905439U CN205209534U CN 205209534 U CN205209534 U CN 205209534U CN 201520905439 U CN201520905439 U CN 201520905439U CN 205209534 U CN205209534 U CN 205209534U
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Abstract
The utility model provides a distribution transformer network management system based on zigbee and RFID technique, including setting up the sensor of gathering transformer working parameter in a plurality of transformer substations, on -the -spot execution control mechanism, zigbee data acquisition module, zigbee data processing module, zigbee router node, zigbee network coordination ware, the zigbeeModbus gateway, PLC, the industrial computer, RFID electronic tags and RFID read write line, the sensor of gathering transformer working parameter is connected with zigbee data acquisition module respectively, and zigbee data acquisition module connects gradually data processing module, zigbee router node, zigbee network coordination ware, zigbee modbus gateway, PLC and industrial computer, RFID electronic tags and the communication of RFID read write line looks. But the working parameter of the real -time supervision of this system transformer to the self identification information of being furnished with each transformer realizes data acquisition information management more clearly, and to provide more accurate data parameter basic for intelligent substation and remote management.
Description
Technical field
The utility model relates to a kind of substation transformer network management system, particularly a kind of substation transformer network management system based on Zigbee and RFID technique, this supervisory system can be used to the running parameter monitoring transformer in transformer station, and in the information of transmission, have the information of each transformer.
Background technology
Box-type substation comprises transformer, high-voltage switch gear, low voltage equipment and mutual connection thereof and utility appliance, by transformer, high-voltage switch gear, low voltage equipment and mutual connection thereof and utility appliance compact package, different with components and parts by main electrical scheme, centralized arrangement is in one or several airtight case shell in a certain way.
Along with the development of automatic technology, the running parameter of the working environment parameter (parameter etc. is put in temperature, humidity parameter, office) of remote real-time monitoring box-type substation and transformer (the oil temperature parameter of oil-filled transformer, pressure parameter, vibration parameters, etc.), to the environment improving box-type substation, the fault getting rid of transformer is of great benefit to.
In prior art, the information management for transformer does not also realize the information management of networking, and transformer efforts parameter is transmitted together with RFID information, and the technology realizing networking unified management is not also reported.
Summary of the invention
The utility model provides a kind of substation transformer network management system based on Zigbee and RFID technique, can the running parameter (the oil temperature parameter, pressure parameter, vibration parameters etc. of oil-filled transformer) of Real-Time Monitoring transformer, and be furnished with the self identification information of each transformer, realize definitely data acquisition information management, realize network management, for intelligent substation and telemanagement provide data parameters basis more accurately.
For achieving the above object, the utility model is achieved through the following technical solutions:
Based on the substation transformer network management system of Zigbee and RFID technique, comprise the sensor being arranged at and gathering transformer running parameter in multiple transformer station, on-the-spot execution control gear, Zigbee data acquisition module, Zigbee data processing module, Zigbee router node, Zigbee network telegon, ZigbeeModbus gateway, PLC, industrial computer, RFID and rfid interrogator, the sensor of described collection transformer running parameter is connected with Zigbee data acquisition module respectively, Zigbee data acquisition module is connection data processing module successively, Zigbee router node, Zigbee network telegon, ZigbeeModbus gateway, PLC and industrial computer, described RFID and rfid interrogator communicate, rfid interrogator is connected with industrial computer, industrial computer is provided with wireless communication interface or optical communication interface, and industrial computer is communicated by wireless communication interface or optical communication interface and remote management center,
Sensor involving vibrations sensor, oil temperature sensor, the pressure transducer of described collection transformer running parameter; Described vibration transducer is fixed on transformer oil box top by magnet adsorption, directly over the centre position of every phase winding; Described oil temperature sensor is used for measuring the oil temperature of oil-filled transformer, is positioned at the top of oil tank of transformer, gos deep into 50mm-80mm in oil; Described pressure transducer is positioned at transformer oil box top, is used for the oil-air pressure of measuring transformer; Described RFID is arranged at the sidepiece of transformer; In the transformer station of transformer place, be provided with the blower fan regulating humiture, when ambient temperature and humidity exceeds normal range, perform control gear by scene and control the next automatic adjusting ambient temperature and humidity of blower fan running.
Described Zigbee data processing module comprises signal access unit, signal conversion unit, isolation amplifying unit and embedded micro computer, signal access unit successively with signal conversion unit, isolate amplifying unit and be connected with embedded micro computer order, embedded micro computer is provided with field-bus interface and communicates with industrial computer, and the gating signal of signal access unit, signal conversion unit and isolation amplifying unit is all from embedded micro computer;
Described signal access unit is made up of UIN1, UIN2, UIN3 tri-list 8 passage numeral control simulation electronic switches, and the signal of access is exported respectively by A1, A2, A3 tri-output terminals after gating;
Described signal conversion unit is made up of resistance, impedance transformer and electronic switch, exported respectively by B1, B2, B3 tri-output terminals, latch SC is provided with in unit, BX is the gating signal of latch SC, and the state of electronic switch S1 ~ S7 is determined by the state of latch SC output terminal D0, D1, D2;
Described isolation amplifying unit is made up of Capacitor apart assembly, amplifier, resistor network, and wherein Capacitor apart assembly is by electronic switch Kc
11, Kc
12, Kc
21, Kc
22, electric capacity C6, C7 composition, electronic switch Kc
11, Kc
12, Kc
21, Kc
22switch between input and output with fixing fast frequency, realize the isolation of sensor circuit and amplifying circuit;
Embedded micro computer comprises A/D converter, reference voltage source, dsp controller, temperature compensation sensor, network interface and storer, reference voltage source is connected with A/D converter, and A/D converter is connected with dsp controller with address bus AB1 by data bus DB1; Dsp controller one end is by data bus DB
2with address bus AB
2be connected with the network interface of band fieldbus function, one end is by data bus DB
3with address bus AB
3be connected with storer; Temperature compensation sensor is connected with dsp controller, for measuring thermocouple cold junction environment temperature and cold junction auto-compensation or surveying its elsewhere temperature; The output signal V of A/D converter reception amplifier
out.
Compared with prior art, the beneficial effects of the utility model are:
1) based on the substation transformer network management system of Zigbee and RFID technique, can the running parameter (the oil temperature parameter, pressure parameter, vibration parameters etc. of oil-filled transformer) of Real-Time Monitoring transformer, and the self identification information of being furnished with each transformer is (as transformer model, position label, managerial personnel etc.), realize definitely data acquisition information management, for intelligent substation and telemanagement provide data parameters basis more accurately.
By the substation parameter that gathers and transformer parameter and digital sampling and processing, data basis is accurately provided to the intelligentized control method of transformer station, for the Temperature and Humidity Control of transformer station's environment, the fault analysis of transformer provides effective especially data.
2) the substation transformer network management system of RFID technique is adopted, can be read and write being greater than the position beyond 10 meters by rfid interrogator, make transformer running parameter be transferred to administrative center together with the every terms of information (managerial personnel, model, geographic position etc.) of transformer, be convenient to long-range unified management and monitoring.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of the substation transformer network management system based on Zigbee and RFID technique.
Fig. 2 is the structured flowchart of digital sampling and processing.
Fig. 3 is signal access unit schematic diagram.
Fig. 4 is signal conversion unit schematic diagram.
Fig. 5 is isolation amplifying unit schematic diagram.
Fig. 6 is embedded micro computer structural drawing.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
See Fig. 1, based on the substation transformer network management system of Zigbee and RFID technique, comprise the sensor being arranged at and gathering transformer running parameter in multiple transformer station, on-the-spot execution control gear, Zigbee data acquisition module, Zigbee data processing module, Zigbee router node, Zigbee network telegon, ZigbeeModbus gateway, PLC, industrial computer, RFID and rfid interrogator, the sensor of described collection transformer running parameter is connected with Zigbee data acquisition module respectively, Zigbee data acquisition module is connection data processing module successively, Zigbee router node, Zigbee network telegon, ZigbeeModbus gateway, PLC and industrial computer, described RFID and rfid interrogator communicate, rfid interrogator is connected with industrial computer, industrial computer is provided with wireless communication interface or optical communication interface, and industrial computer is communicated by wireless communication interface or optical communication interface and remote management center.
Sensor involving vibrations sensor, oil temperature sensor, the pressure transducer of described collection transformer running parameter; Described vibration transducer is fixed on transformer oil box top by magnet adsorption, directly over the centre position of every phase winding; Described oil temperature sensor is used for measuring the oil temperature of oil-filled transformer, is positioned at the top of oil tank of transformer, gos deep into 50mm-80mm in oil; Described pressure transducer is positioned at transformer oil box top, is used for the oil-air pressure of measuring transformer; Described RFID is arranged at the sidepiece of transformer; In the transformer station of transformer place, being provided with the blower fan regulating humiture, when ambient temperature and humidity exceeds normal range, carrying out automatic adjusting ambient temperature and humidity by controlling blower fan running.
See Fig. 2, described Zigbee data processing module comprises signal access unit, signal conversion unit, isolation amplifying unit and embedded micro computer, signal access unit successively with signal conversion unit, isolate amplifying unit and be connected with embedded micro computer order, embedded micro computer is provided with field-bus interface and communicates with industrial computer, and the gating signal of signal access unit, signal conversion unit and isolation amplifying unit is all from embedded micro computer.
See Fig. 3, signal access unit is made up of UIN1, UIN2, UIN3 (as CD4051 or CC4051) three list 8 passage numeral control simulation electronic switches, the signal of access is exported respectively by A1, A2, A3 tri-output terminals after gating, IN11, IN21 and IN31 are the 1st road signal input part, in like manner, IN18, IN28 and IN38 are the 8th road signal input part.QH is signal access unit gating signal, and low level is strobe state, and D2, D1 and D0 are input end selectivity signal, and input signal is that timesharing accesses in order.Its gating and the embedded micro computer controlling to believe from digital sampling and processing, all export to signal conversion unit by A1, A2 and A3 after the access of its signal gating.
See Fig. 4, signal conversion unit is made up of resistance R1 ~ R11, impedance transformer GS1 ~ GS6 and electronic switch S1 ~ S7, exported respectively by B1, B2, B3 tri-output terminals, latch SC is provided with in unit, BX is the gating signal of latch SC, and the state of electronic switch S1 ~ S7 is determined by the state of latch SC output terminal D0, D1, D2;
Various signals conversion (omnipotent conditioning) from signal access unit are become standard voltage signal by signal conversion unit.Signal conversion unit Received signal strength access unit output terminals A 1, A2 and A3 end signal, convert the output signal of output terminal B1, B2 and B3 of regulation to by the conditioning of signal conversion unit.Vout is additional reference voltage, and D2, D1 and D0 are the selectivity signals of the embedded micro computer from digital sampling and processing, with the conversion of control inputs signal.
Under the control of embedded micro computer, can by signal Direct Transform specified standard signals such as mV, mA, thermal resistance, thermocouple, during enforcement, this standard signal can be 5V;
See Fig. 5, isolation amplifying unit is by Capacitor apart assembly U
1, amplifier U
2, resistor network U
3composition, wherein Capacitor apart assembly U
1by electronic switch Kc
11, Kc
12, Kc
21, Kc
22, electric capacity C6, C7 composition, electronic switch Kc
11, Kc
12, Kc
21, Kc
22switch between input and output with fixing fast frequency, realize the isolation of sensor circuit and amplifying circuit; GL is capacitance switch formula isolation gating signal, and low level is gating, and D0 is capacitance switch control signal, amplifies selectivity signal all from embedded micro computer; This capacitance switch formula isolation, has highly reliable isolation characteristic, programmable amplifier, good linearity, and basis signal is selected range automatically, especially can ensure that faint data-signal amplifies undistorted.
During D0 low level, KC11 ~ KC22 is combined in the left side, and namely electric capacity C1 and C2 is stored in signal, and during D0 high level, signal passes to operational amplifier U
2; U
2and U
3form programmable amplifier, namely under the amplification selectivity signal of embedded micro computer, regulate the resistance of digital regulation resistance SD1, SD2 and SD3, realize the change of enlargement factor, namely change the range of signal, and then improve the precision of signal conversion; Isolation amplifying unit achieves the reliable isolation by conditioning unit and amplifying circuit, disturbs with ride gain amplifying circuit and front end, and simultaneously according to the size of letter, the gain of its amplifying circuit selected, namely selects range, be referred to as programmable-gain automatically.
See Fig. 6, embedded micro computer comprises A/D converter U4, reference voltage source, dsp controller U5 (as TMS320C54X), temperature compensation sensor DS18B20, network interface U6 and storer U7, reference voltage source is connected with A/D converter, and A/D converter is connected with dsp controller with address bus AB1 by data bus DB1; Dsp controller one end is by data bus DB
2with address bus AB
2be connected with the network interface of band fieldbus function, one end is by data bus DB
3with address bus AB
3be connected with storer; Temperature compensation sensor DS18B20 is connected with dsp controller, for measuring thermocouple cold junction environment temperature and cold junction auto-compensation or surveying its elsewhere temperature; The output signal V of A/D converter reception amplifier
out.In order to eliminate the impact that environment temperature produces thermocouple measuring accuracy, dsp controller U5 connects a DS18B20 one-wire bus formula digital temperature sensor; Network interface U6 can adopt Profibus-DP and Modbus fieldbus, realizes the communication with industrial computer; USB interface can be used for the renewal of program.
In embodiment, A/D converter adopts ± 18 high resolution A/D converters, as Maxim product MAX132MRC chip, and serial, low-power consumption, temperature range-55 DEG C ~+125 DEG C; Dsp controller is the core component of data acquisition process, adopts the TMS320C2407 of moral thirty instrument (TI), 16 bit DSPs; Storer is ROM (read-only memory); Network interface is exclusively used in Profibus-DP and Modbus fieldbus; Reference voltage source provides reference voltage for A/D converter, generally adopts the high precision of 5V or 2.5V, and galvanic current source; USB interface is that unloading arranges or exports necessary information.
Claims (3)
1. based on the substation transformer network management system of Zigbee and RFID technique, it is characterized in that, comprise the sensor being arranged at and gathering transformer running parameter in multiple transformer station, on-the-spot execution control gear, Zigbee data acquisition module, Zigbee data processing module, Zigbee router node, Zigbee network telegon, ZigbeeModbus gateway, PLC, industrial computer, RFID and rfid interrogator, the sensor of described collection transformer running parameter is connected with Zigbee data acquisition module respectively, Zigbee data acquisition module is connection data processing module successively, Zigbee router node, Zigbee network telegon, ZigbeeModbus gateway, PLC and industrial computer, described RFID and rfid interrogator communicate, rfid interrogator is connected with industrial computer, industrial computer is provided with wireless communication interface or optical communication interface, and industrial computer is communicated by wireless communication interface or optical communication interface and remote management center,
Sensor involving vibrations sensor, oil temperature sensor, the pressure transducer of described collection transformer running parameter; Described vibration transducer is fixed on transformer oil box top by magnet adsorption, directly over the centre position of every phase winding; Described oil temperature sensor is used for measuring the oil temperature of oil-filled transformer, is positioned at the top of oil tank of transformer, gos deep into 50mm-80mm in oil; Described pressure transducer is positioned at transformer oil box top, is used for the oil-air pressure of measuring transformer; Described RFID is arranged at the sidepiece of transformer; In the transformer station of transformer place, being provided with the blower fan regulating humiture, when ambient temperature and humidity exceeds normal range, carrying out automatic adjusting ambient temperature and humidity by controlling blower fan running.
2. the substation transformer network management system based on Zigbee and RFID technique according to claim 1, it is characterized in that, described Zigbee data processing module comprises signal access unit, signal conversion unit, isolation amplifying unit and embedded micro computer, signal access unit successively with signal conversion unit, isolate amplifying unit and be connected with embedded micro computer order, embedded micro computer is provided with field-bus interface and communicates with industrial computer, and the gating signal of signal access unit, signal conversion unit and isolation amplifying unit is all from embedded micro computer.
3. the substation transformer network management system based on Zigbee and RFID technique according to claim 2, it is characterized in that, described signal access unit is made up of UIN1, UIN2, UIN3 tri-list 8 passage numeral control simulation electronic switches, and the signal of access is exported respectively by A1, A2, A3 tri-output terminals after gating;
Described signal conversion unit is made up of resistance, impedance transformer and electronic switch, exported respectively by B1, B2, B3 tri-output terminals, latch SC is provided with in unit, BX is the gating signal of latch SC, and the state of electronic switch S1 ~ S7 is determined by the state of latch SC output terminal D0, D1, D2;
Described isolation amplifying unit is made up of Capacitor apart assembly, amplifier, resistor network, and wherein Capacitor apart assembly is by electronic switch Kc
11, Kc
12, Kc
21, Kc
22, electric capacity C6, C7 composition, electronic switch Kc
11, Kc
12, Kc
21, Kc
22switch between input and output with fixing fast frequency, realize the isolation of sensor circuit and amplifying circuit;
Embedded micro computer comprises A/D converter, reference voltage source, dsp controller, temperature compensation sensor, network interface and storer, reference voltage source is connected with A/D converter, and A/D converter is connected with dsp controller with address bus AB1 by data bus DB1; Dsp controller one end is by data bus DB
2with address bus AB
2be connected with the network interface of band fieldbus function, one end is by data bus DB
3with address bus AB
3be connected with storer; Temperature compensation sensor is connected with dsp controller, for measuring thermocouple cold junction environment temperature and cold junction auto-compensation or surveying its elsewhere temperature; The output signal V of A/D converter reception amplifier
out.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905439.9U CN205209534U (en) | 2015-11-12 | 2015-11-12 | Distribution transformer network management system based on zigbee and RFID technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905439.9U CN205209534U (en) | 2015-11-12 | 2015-11-12 | Distribution transformer network management system based on zigbee and RFID technique |
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| Publication Number | Publication Date |
|---|---|
| CN205209534U true CN205209534U (en) | 2016-05-04 |
Family
ID=55847244
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520905439.9U Active CN205209534U (en) | 2015-11-12 | 2015-11-12 | Distribution transformer network management system based on zigbee and RFID technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107832687A (en) * | 2017-10-27 | 2018-03-23 | 武汉大学 | Fault diagnostic method for transformer winding based on wireless identification sensing |
| CN109348449A (en) * | 2018-10-26 | 2019-02-15 | 南京乾能信息工程有限公司 | A kind of interior environment on-line monitoring method in change station |
-
2015
- 2015-11-12 CN CN201520905439.9U patent/CN205209534U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107832687A (en) * | 2017-10-27 | 2018-03-23 | 武汉大学 | Fault diagnostic method for transformer winding based on wireless identification sensing |
| CN109348449A (en) * | 2018-10-26 | 2019-02-15 | 南京乾能信息工程有限公司 | A kind of interior environment on-line monitoring method in change station |
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