CN103668224A - Cathode protection test pile of transformer station earthing device - Google Patents
Cathode protection test pile of transformer station earthing device Download PDFInfo
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- CN103668224A CN103668224A CN201310656978.9A CN201310656978A CN103668224A CN 103668224 A CN103668224 A CN 103668224A CN 201310656978 A CN201310656978 A CN 201310656978A CN 103668224 A CN103668224 A CN 103668224A
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Abstract
A cathode protection test pile of a transformer station earthing device is characterized by comprising a test management module, a potential measurement module, a wireless signal transmit-receive module and a power supply module which are fixed by a clamping groove in the pile body; the test management module comprises a single-chip microcomputer electrically connected with the potential measurement module, the wireless signal transmit-receive module and the power supply module; the potential measurement module comprises a power frequency signal isolation circuit and an analog-to-digital converter, wherein the power frequency signal isolation circuit inputs potential signals, the output terminal of the power frequency signal isolation circuit is electrically connected with the input terminal of the analog-to-digital converter, and the output terminal of the analog-to-digital converter is electrically connected with the single-chip microcomputer of the test management module; and the wireless signal transmit-receive module comprises a transmitter module and a receiving module which are in signal connection, and the transmitter module is electrically connected with the single-chip microcomputer of the test management module. The cathode protection test pile is capable of realizing integral control and monitoring on cathode protection effect by users.
Description
Technical field
The invention belongs to metal corrosion and protection technical field, relate to a kind of cathodic protection test pile that is applicable to substation grounding device, for the monitoring and evaluation of substation grounding device galvanic protection effect.
Background technology
Substation grounding device has " working grounding ", " grounding for lightening ", " protective ground " three large Main Functions, is the important barrier of substation and network system safe operation.Along with the increase of substation capacity and the raising of voltage range, the security and stability of grounding device is required also just more and more higher.The corrosion of substation grounding device may cause the generation in power equipment " lost territory ", and primary equipment is damaged, and when serious, also may cause substation out of service, even can destroy whole network system stable.
Galvanic protection anticorrosion technique is a kind of electrochemical method that can effectively prevent metallic corrosion, and its principle is to make metal generation cathodic polarization, makes metal enter steady state or passive state, thereby stops or delaying the generation of corrosion.Substation grounding device is implemented to galvanic protection and can effectively prevent that it from corroding, and it is applied, to protect the quality of effect after galvanic protection be to need the problem paid close attention to.When high-voltage transforming stands in work, due to three load imbalances, have alternating current to leak into the earth by grounding device, the mensuration of the existence meeting anticathode protection corrosion potential of alternating current has an immense impact on always; The mensuration of conventional cathode protection corrosion potential need to arrive on-site point-by-point measurement in addition, and efficiency is low, and cost is high, and does not have continuity and ageing.
Summary of the invention
The problem existing in measuring for above-mentioned substation grounding device cathodic protection potential; the invention provides a kind of cathodic protection test pile that is applicable to substation grounding device; can get rid of the interference of alternative stray current to potential measurement; and can be continuously; in real time the cathodic protection potential recording is launched by wireless mode, facilitated user's anticathode protection effect to carry out integral body and control and monitoring.
For achieving the above object by the following technical solutions: a kind of cathodic protection test pile of substation grounding device, it comprises power supply module, it is characterized in that, it also comprises pile body, test and management assembly, potential measurement assembly, wireless signal transmitting-receiving subassembly and power supply module, described test and management assembly, potential measurement assembly, wireless signal transmitting-receiving subassembly, power supply module are by being fixed in pile body at the built-in draw-in groove of pile body, described test and management assembly comprises micro-chip, and micro-chip is electrically connected to potential measurement assembly, wireless signal transmitting-receiving subassembly, power supply module respectively; Described potential measurement assembly comprises power frequency component buffer circuit and analog to digital converter, power frequency component buffer circuit input electric potential signal, power frequency component buffer circuit output terminal is electrically connected to analog to digital converter input terminus, and analog to digital converter output terminal is electrically connected to the micro-chip of test and management assembly; Described wireless signal transmitting-receiving subassembly comprises: transmitter module is connected with receiver module signal, and transmitter module is electrically connected to the micro-chip of test and management assembly by serial ports.
Described pile body is plastics pile body.
The micro-chip of described test and management assembly adopts the micro-chip that model is AT89C2051.
The power frequency component buffer circuit of described potential measurement assembly comprises that capacitor C 23～26, inductance L 5～6, discharge tube G are electrically connected to.
It is AD7705 modulus conversion chip that the analog to digital converter of described potential measurement assembly adopts model, and AD7705 modulus conversion chip is electrically connected to quartz oscillator Y1 and decoupling capacitor C22.
The transmitter module of described wireless signal transmitting-receiving subassembly comprises the first crystal oscillator SAW, resistance R 1, and capacitor C 4, inductance L 1, L2, triode Q1, Q2 and transmitting antenna ANT are electrically connected to.
The receiver module of described wireless signal transmitting-receiving subassembly comprises that model is the chip of 3310A, the second crystal oscillator SAW, and resistance R 2～R7, capacitor C 5～20, inductance L 3, triode Q3 connects with receiving antenna ANT.
The pile body of the cathodic protection test pile of substation grounding device of the present invention is plastics pile body, has low cost, corrosion-resistant, and electrical isolation does not produce the feature intercepting with shielding to wireless signal; Potential measurement assembly can the interference of elimination ac signal to corrosion potential signal, guarantees measuring accuracy; Wireless signal transmitting-receiving subassembly can anti-complex electromagnetic environment interference, transmitting/receiving wireless signal accurately; Can transmit electric potential signal continuously, in real time, facilitate user's anticathode protection effect to carry out whole assurance and monitoring.
Accompanying drawing explanation
Fig. 1 is the cathodic protection test pile structural representation of substation grounding device.
Fig. 2 is the cathodic protection test pile circuit block diagram of substation grounding device.
Fig. 3 is the schematic circuit diagram of test and management assembly in Fig. 2.
Fig. 4 is the power frequency component buffer circuit schematic diagram of potential measurement assembly in Fig. 2.
Fig. 5 is the analog-digital converter circuit schematic diagram of potential measurement assembly in Fig. 2.
Fig. 6 is the transmitter module schematic circuit diagram of wireless signal transmitting-receiving subassembly in Fig. 2.
Fig. 7 is the receiver module schematic circuit diagram of wireless signal transmitting-receiving subassembly in Fig. 2.
Fig. 8 is the VRM Voltage Regulator Module schematic circuit diagram of power supply module in Fig. 2.
In figure: 1 pile body, 2 test and management assemblies, 3 potential measurement assemblies, 4 wireless signal transmitting-receiving subassemblies, 5 power supply modules, 6 micro-chips, 7 power frequency component buffer circuits, 8 analog to digital converters, 9 transmitter modules, 10 VRM Voltage Regulator Modules, 11 batteries, 12 receiver modules.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
With reference to Fig. 1 and 2; the cathodic protection test pile of a kind of substation grounding device of the present invention; comprise pile body 1, power supply module 5, test and management assembly 2, potential measurement assembly 3, wireless signal transmitting-receiving subassembly 4 and power supply module 5, described test and management assembly 2, potential measurement assembly 3, wireless signal transmitting-receiving subassembly 4, power supply module 5 are by being fixed in pile body 1 at the built-in draw-in groove of pile body 1.Described test and management assembly 2 comprises micro-chip 6, and micro-chip 6 is electrically connected to potential measurement assembly 3, wireless signal transmitting-receiving subassembly 4, power supply module 5 respectively.Described potential measurement assembly 3 comprises power frequency component buffer circuit 7 and analog to digital converter 8, power frequency component buffer circuit 7 input electric potential signals, power frequency component buffer circuit 7 output terminals are electrically connected to analog to digital converter 8 input terminuss, analog to digital converter 8 output terminals are electrically connected to the micro-chip 6 of test and management assembly 2, described wireless signal transmitting-receiving subassembly 4 comprises: transmitter module 9 is connected with receiver module 12 signals, and transmitter module 9 is electrically connected to the micro-chip 6 of test and management assembly 2 by serial ports.Described pile body 1 is plastics pile body.
With reference to Fig. 3, the micro-chip 6 of described test and management assembly 2 adopts the micro-chip that model is AT89C2051.AT89C2051 is a kind of low potential, 8 micro-chips of high-performance COMS, sheet includes the read-only program memory of 2k bytes and the random data storer of 128bytes, compatibility standard MCS-51 order set, 8 central processing units of sheet built-in general-purpose and Flash storage unit.There are 15 I/O mouths, two 16 bit timing devices, five vectorial two-stage interrupt structures, a full duplex serial port, an accurate analog comparator and two kinds of optional software power saving operation modes.
With reference to Fig. 4, the power frequency component buffer circuit 7 of described potential measurement assembly 3 comprises capacitor C 23～26, and inductance L 5, L6 and discharge tube G are electrically connected to.Power frequency component buffer circuit 7 can be removed the interference that on substation grounding device, power current is measured corrosion potential, can also prevent thunder-strike current and the damage of the large electric current of substation's fault to detective pole.
With reference to Fig. 5, it is AD7705 modulus conversion chip that the analog to digital converter 8 of described potential measurement assembly 3 adopts model, and AD7705 modulus conversion chip is electrically connected to quartz oscillator Y1 and decoupling capacitor C22.AD7705 modulus conversion chip is as simulating signal and the numerary signal conversion core of substation grounding device cathodic protection test pile; AD7705 modulus conversion chip is electrically connected to and can carries out continuously AD conversion with quartz oscillator Y1 and decoupling capacitor C22, has high resolving power, good noise robustness and the feature of Low-voltage Low-power.
With reference to Fig. 6 and 7, the transmitter module 9 of described wireless signal transmitting-receiving subassembly 4 comprises the first crystal oscillator SAW, resistance R 1, and capacitor C 4, inductance L 1, L2, triode Q1, Q2 and transmitting antenna ANT are electrically connected to.The receiver module 12 of described wireless signal transmitting-receiving subassembly 4 comprises that model is the chip of 3310A, the second crystal oscillator SAW, and resistance R 2～R7, capacitor C 5～C20, inductance L 3, triode Q3 connects with receiving antenna ANT.Transmitter module 9 receives the work order by micro-chip 6 transmissions of test and management assembly 2, sends the electric potential signal collecting, and within the scope of substation place, can receive accurately and send wireless signal.
With reference to Fig. 8, described VRM Voltage Regulator Module 10 comprises that polar capacitor E1～2, capacitor C 1～2 are electrically connected to.VRM Voltage Regulator Module 10 can be adjusted the voltage of being inputted by battery 11, and the voltage after adjustment can adapt to the difference needs of disparate modules to voltage.Battery 11 can be store battery, drying battery or lithium ion battery.
With reference to Fig. 1-8, when potential measurement, electric potential signal is removed ac signal to the impact of measuring through the power frequency component buffer circuit 7 of potential measurement assembly 3, from the signal of power frequency component buffer circuit 7 outputs, through the analog to digital converter 8 of potential measurement assembly 3, change, final data enters the micro-chip 6 of test and management assembly 2; Above-mentioned wireless signal transmitting-receiving subassembly 4 transmitter modules 9 and receiver module 12 are reduce power consumption element, are applicable to the electromagnetic environment of substation's complexity, for receiving working instruction signal, and firing potential signal; The battery 11 of power supply module 5 is the circuit supply of substation grounding device cathodic protection test pile through VRM Voltage Regulator Module 10 output electric energy.
The embodiment that the present invention is given, is only limited embodiment, and non exhaustive, and those skilled in the art are any without the copying and improving of creative work, and still belong to the scope that the claims in the present invention are protected.
Claims (7)
1. the cathodic protection test pile of a substation grounding device, it comprises power supply module, it is characterized in that, it also comprises pile body, test and management assembly, potential measurement assembly, wireless signal transmitting-receiving subassembly and power supply module, described test and management assembly, potential measurement assembly, wireless signal transmitting-receiving subassembly, power supply module are by being fixed in pile body at the built-in draw-in groove of pile body, described test and management assembly comprises micro-chip, and micro-chip is electrically connected to potential measurement assembly, wireless signal transmitting-receiving subassembly, power supply module respectively; Described potential measurement assembly comprises power frequency component buffer circuit and analog to digital converter, power frequency component buffer circuit input electric potential signal, power frequency component buffer circuit output terminal is electrically connected to analog to digital converter input terminus, and analog to digital converter output terminal is electrically connected to the micro-chip of test and management assembly; Described wireless signal transmitting-receiving subassembly comprises: transmitter module is connected with receiver module signal, and transmitter module is electrically connected to the micro-chip of test and management assembly by serial ports.
2. the cathodic protection test pile of substation grounding device according to claim 1, is characterized in that: described pile body is plastics pile body.
3. the cathodic protection test pile of substation grounding device according to claim 1, is characterized in that: the micro-chip of described test and management assembly adopts the micro-chip that model is AT89C2051.
4. the cathodic protection test pile of substation grounding device according to claim 1, is characterized in that: the power frequency component buffer circuit of described potential measurement assembly comprises capacitor C 23～C26, and inductance L 5, L6 and discharge tube G are electrically connected to.
5. the cathodic protection test pile of substation grounding device according to claim 1; it is characterized in that: it is AD7705 modulus conversion chip that the analog to digital converter of described potential measurement assembly adopts model, and AD7705 modulus conversion chip is electrically connected to quartz oscillator Y1 and decoupling capacitor C22.
6. the cathodic protection test pile of substation grounding device according to claim 1; it is characterized in that: the transmitter module of described wireless signal transmitting-receiving subassembly comprises the first crystal oscillator SAW, resistance R 1, capacitor C 4; inductance L 1, L2, triode Q1, Q2 and transmitting antenna ANT are electrically connected to.
7. the cathodic protection test pile of substation grounding device according to claim 1; it is characterized in that: the receiver module of described wireless signal transmitting-receiving subassembly comprises that model is the chip of 3310A; the second crystal oscillator SAW; resistance R 2～R7; capacitor C 5～C20; inductance L 3, triode Q3 connects with receiving antenna ANT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656978.9A CN103668224A (en) | 2013-12-06 | 2013-12-06 | Cathode protection test pile of transformer station earthing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656978.9A CN103668224A (en) | 2013-12-06 | 2013-12-06 | Cathode protection test pile of transformer station earthing device |
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| CN103668224A true CN103668224A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310656978.9A Pending CN103668224A (en) | 2013-12-06 | 2013-12-06 | Cathode protection test pile of transformer station earthing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887096A (en) * | 2016-04-27 | 2016-08-24 | 天津智晟济科技发展有限公司 | Alternating current-direct current channel separation type intelligent cathodic protection potential data acquisition instrument |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201686746U (en) * | 2010-04-29 | 2010-12-29 | 郑州安然测控设备有限公司 | Pile for protecting and testing cathodes |
| CN201695090U (en) * | 2010-04-29 | 2011-01-05 | 郑州安然测控设备有限公司 | Cathodic protection test pile and cathodic protection monitoring system |
| CN202898549U (en) * | 2012-11-12 | 2013-04-24 | 中国石油天然气股份有限公司 | Wireless data transmission test post |
| CN203241783U (en) * | 2013-03-22 | 2013-10-16 | 中国昆仑工程公司 | Cathodic protection remote management system |
| CN203593789U (en) * | 2013-12-06 | 2014-05-14 | 国家电网公司 | Cathode protection test pile for grounding device of substation |
-
2013
- 2013-12-06 CN CN201310656978.9A patent/CN103668224A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201686746U (en) * | 2010-04-29 | 2010-12-29 | 郑州安然测控设备有限公司 | Pile for protecting and testing cathodes |
| CN201695090U (en) * | 2010-04-29 | 2011-01-05 | 郑州安然测控设备有限公司 | Cathodic protection test pile and cathodic protection monitoring system |
| CN202898549U (en) * | 2012-11-12 | 2013-04-24 | 中国石油天然气股份有限公司 | Wireless data transmission test post |
| CN203241783U (en) * | 2013-03-22 | 2013-10-16 | 中国昆仑工程公司 | Cathodic protection remote management system |
| CN203593789U (en) * | 2013-12-06 | 2014-05-14 | 国家电网公司 | Cathode protection test pile for grounding device of substation |
Non-Patent Citations (1)
| Title |
|---|
| 朱新华等: "无线收发组件的工作原理", 《电子制作》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887096A (en) * | 2016-04-27 | 2016-08-24 | 天津智晟济科技发展有限公司 | Alternating current-direct current channel separation type intelligent cathodic protection potential data acquisition instrument |
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Application publication date: 20140326 |