CN203593789U - Cathode protection test pile for grounding device of substation - Google Patents
Cathode protection test pile for grounding device of substation Download PDFInfo
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- CN203593789U CN203593789U CN201320800417.7U CN201320800417U CN203593789U CN 203593789 U CN203593789 U CN 203593789U CN 201320800417 U CN201320800417 U CN 201320800417U CN 203593789 U CN203593789 U CN 203593789U
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 238000005259 measurement Methods 0.000 claims abstract description 30
- 238000004210 cathodic protection Methods 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model provides a cathode protection test pile for the grounding device of a substation. The cathode protection test pile is characterized by comprising a test management component, a potential measurement component, a wireless signal receiving and transmitting component and a power supply component, which are fixed in a pile body through clamping grooves, wherein the test management component comprises a single chip microcomputer; the single chip microcomputer is electrically connected with the potential measurement component, the wireless signal receiving and transmitting component and the power supply component respectively; the potential measurement component comprises a power frequency signal isolating circuit and an analog-digital converter; the power frequency signal isolating circuit is used for inputting potential signals; the output end of the power frequency signal isolating circuit is electrically connected with the input end of the analog-digital converter; the output end of the analog-digital converter is electrically connected with the single chip microcomputer of the test management component; the wireless signal receiving and transmitting component comprises a transmitting module and a receiving module; the transmitting module is in signal connection with the receiving module; the transmitting module is electrically connected with the single chip microcomputer of the test management component through a serial interface. The cathode protection testing pile can be used for wholly controlling and monitoring the cathode protection effect by a user.
Description
Technical field
The utility model belongs to metal corrosion and protection technical field, relates 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.
Utility model content
The problem existing in measuring for above-mentioned substation grounding device cathodic protection potential; the utility model 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 entirety 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 with 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 with analog to digital converter input terminus, and analog to digital converter output terminal is electrically connected with 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 with 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 capacitor C 23～26, inductance L 5～6, discharge tube G electrical connection.
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 with 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, capacitor C 4, inductance L 1, L2, triode Q1, Q2 and transmitting antenna ANT electrical connection.
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 utility model 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 overall 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, embodiment of the present utility model is described.
With reference to Fig. 1 and 2; the cathodic protection test pile of a kind of substation grounding device of the utility model; 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 with 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 is inputted electric potential signal, power frequency component buffer circuit 7 output terminals are electrically connected with analog to digital converter 8 input terminuss, analog to digital converter 8 output terminals are electrically connected with 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 with 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, it is the micro-chip of AT89C2051 that the micro-chip 6 of described test and management assembly 2 adopts model.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, inductance L 5, L6 and discharge tube G electrical connection.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 with 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 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, capacitor C 4, inductance L 1, L2, triode Q1, Q2 and transmitting antenna ANT electrical connection.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 being sent by the micro-chip 6 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 polar capacitor E1～2, capacitor C 1～2 electrical connection.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, in the time of 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, the signal of exporting from power frequency component buffer circuit 7 is changed through the analog to digital converter 8 of potential measurement assembly 3, and 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 exports through VRM Voltage Regulator Module 10 circuit supply that electric energy is substation grounding device cathodic protection test pile.
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 with 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 with analog to digital converter input terminus, and analog to digital converter output terminal is electrically connected with 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 with 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, inductance L 5, L6 and discharge tube G electrical connection.
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 with 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 electrical connection.
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 |
|---|---|---|---|
| CN201320800417.7U CN203593789U (en) | 2013-12-06 | 2013-12-06 | Cathode protection test pile for grounding device of substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800417.7U CN203593789U (en) | 2013-12-06 | 2013-12-06 | Cathode protection test pile for grounding device of substation |
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| Publication Number | Publication Date |
|---|---|
| CN203593789U true CN203593789U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320800417.7U Expired - Lifetime CN203593789U (en) | 2013-12-06 | 2013-12-06 | Cathode protection test pile for grounding device of substation |
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| Country | Link |
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| CN (1) | CN203593789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668224A (en) * | 2013-12-06 | 2014-03-26 | 国家电网公司 | Cathode protection test pile of transformer station earthing device |
| CN110656335A (en) * | 2019-11-01 | 2020-01-07 | 贵州电网有限责任公司 | Transformer substation grounding device cathode protection potential detection system and detection method thereof |
-
2013
- 2013-12-06 CN CN201320800417.7U patent/CN203593789U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668224A (en) * | 2013-12-06 | 2014-03-26 | 国家电网公司 | Cathode protection test pile of transformer station earthing device |
| CN110656335A (en) * | 2019-11-01 | 2020-01-07 | 贵州电网有限责任公司 | Transformer substation grounding device cathode protection potential detection system and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20211029 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20211029 |