CN206930718U - Pole tower ground resistance measuring circuit - Google Patents

Pole tower ground resistance measuring circuit Download PDF

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Publication number
CN206930718U
CN206930718U CN201720818189.4U CN201720818189U CN206930718U CN 206930718 U CN206930718 U CN 206930718U CN 201720818189 U CN201720818189 U CN 201720818189U CN 206930718 U CN206930718 U CN 206930718U
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CN
China
Prior art keywords
circuit
pole tower
resistance measuring
iron
tower ground
Prior art date
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Active
Application number
CN201720818189.4U
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Chinese (zh)
Inventor
石军
刘伟
姬俊国
刘仝斌
周娴
曹东杰
李洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shangqiu Power Supply Co of State Grid Henan Electric Power Co Ltd
Original Assignee
Shangqiu Power Supply Co of State Grid Henan Electric Power Co Ltd
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Publication date
Application filed by Shangqiu Power Supply Co of State Grid Henan Electric Power Co Ltd filed Critical Shangqiu Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority to CN201720818189.4U priority Critical patent/CN206930718U/en
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Publication of CN206930718U publication Critical patent/CN206930718U/en
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Abstract

It the utility model is related to a kind of pole tower ground resistance measuring circuit, including grounding resistance measurement circuit, clock circuit, key circuit, microcontroller circuit, communication interface circuit, display circuit, power module, solar battery group and GPRS module;The circuit can be grounded resistance automatic measurement and data are wirelessly transported into main control end, will greatly reduce labor intensity, reduce the electric power accident caused by equipment ground is bad and occur.

Description

Pole tower ground resistance measuring circuit
Technical field
A kind of pole tower ground resistance measuring circuit is the utility model is related to, realizes the on-line monitoring of shaft tower contact resistance.
Background technology
Grounding resistance resistance is to weigh the important technology index of transmission line of electricity earthed system quality, if the ground connection of shaft tower equipment Resistance exceeds normal range (NR), and when electric shock situation occurs, power system device can be done great damage.In order to ensure various electricity Gas equipment and electrical equipment earthing or grounding means safe and reliable operation, it is necessary to periodically carried out by regulation to the grounding resistance of earthed system Measurement inspection, and because transmission system shaft tower is large number of, the actual measurement in grounding resistance progress scene to earthed system becomes For very hard work, for this utility model proposes a kind of pole tower ground resistance measuring circuit, resistance can be grounded Data are simultaneously wirelessly transported to main control end by automatic measurement, will greatly be reduced labor intensity, and be reduced caused by equipment ground is bad Electric power accident occurs.
Utility model content
In order to solve the above problems, the utility model realizes grounding resistance automatic measurement and data is wirelessly transported into master control End, will greatly reduce labor intensity, reduce the electric power accident caused by equipment ground is bad and occur.
The technical solution adopted in the utility model is:A kind of pole tower ground resistance measuring circuit, including ground connection grounding resistance Measuring circuit, clock circuit, key circuit, microcontroller circuit, communication interface circuit, display circuit, power module, solar energy Battery pack and GPRS module;The output end of described grounding resistance measurement circuit and the I/O mouths of microcontroller circuit connect;It is described Clock circuit output end and microcontroller circuit I/O mouths connect;The output end and microprocessor of described key circuit The I/O mouths connection of circuit;The input of described communication interface circuit and the port of microcontroller circuit connect;Described is logical Believe that the output end of interface circuit and the input of GPRS module connect;The input and microcontroller circuit of described display circuit I/O mouths connection;The output end of described power module and the power end of microcontroller circuit connect, described power module The output end of input and solar battery group connects.
Further, described grounding resistance measurement circuit includes the first iron core, the first iron-core coil, the second iron core and second Iron-core coil;Described the first iron core and the second core material is permalloy;First iron-core coil and the second iron-core coil It is enamel-covered wire coiling, the circle of coiling 50 and 500 encloses respectively.
Further, described clock circuit uses DS1302.
Further, described solar battery group by solar panel and lithium battery group into.
Further, described key circuit uses 4 touch keys, sets different size of grounding resistance alarming value.
Further, described microcontroller circuit STM32 single-chip microcomputers.
Further, described display circuit is shown using liquid crystal display.
Good effect of the present utility model is:
(1)Background monitoring software can be tested grounding resistance, record data storing data automatically form, side with real-time display Just historical query, the situation of change of research and application point grounding resistance, alarm critical value can also be set by tester, there is sound Light alarm instruction, independently installed use when being very suitable for without building network.
(2)Ground wire punching is easy to use using real-time non-cpntact measurement by iron core in grounding resistance measurement circuit.
(3)Pole tower ground resistance measuring circuit be arranged on waterproof stainless steel metal shell in, completely enclose, have anti-rain, The characteristic such as dust-proof, high-low temperature resistant, anti-corrosion, fire-retardant, it is particularly suitable for field, mine, interior etc. and monitors on-line for a long time, measurement apparatus With measurement accuracy height, stable performance and high reliability feature.
Brief description of the drawings
Fig. 1 is pole tower ground resistance measuring circuit principle assumption diagram;
Fig. 2 is grounding resistance measurement circuit principle structure figure.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model provides a kind of pole tower ground resistance measuring circuit, including microcontroller circuit 1, connect Ground resistance measuring circuit 2, key circuit 3, solar battery group 4, power module 5, display circuit 6, clock circuit 7, communication connect Mouth circuit 8 and GPRS module 9.Microcontroller circuit uses STM32 single-chip microcomputers, the output end of grounding resistance measurement circuit 2 with it is micro- The I/O mouths connection of processor circuit 1;Clock circuit 7 uses DS1302, output end and the microcontroller circuit 1 of clock circuit 7 I/O mouths connect;The output end of key circuit 3 is connected with the I/O mouths of microcontroller circuit 1;The input of communication interface circuit 8 with The port connection of microcontroller circuit 1;The output end of communication interface circuit 8 is connected with the input of GPRS module 9;Display electricity The input on road 6 is connected with the I/O mouths of microcontroller circuit 1;The output end of power module 5 and the power supply of microcontroller circuit 1 End connection, the input of power module 5 are connected with the output end of solar battery group 4;Wherein, solar battery group 4 is by the sun Can cell panel and lithium battery group into;Key circuit uses 4 touch keys, sets different size of grounding resistance alarming value.
As shown in Fig. 2 grounding resistance measurement circuit 2 includes the first iron core 21, the first iron-core coil 23, the and of the second iron core 22 Second iron-core coil 24;Wherein the first iron core 21 and the material of the second iron core 22 are permalloy;First iron-core coil 23 and Two iron-core coils 24 are enamel-covered wire coiling, respectively the circle of coiling 50 and 500 circles;Two groups of iron-core coils both pass through ground wire, measurement When first add an excitation pulse signal to tested one iron-core coil of earth-return circuit, then an arteries and veins is sensed on another iron-core coil Potential E is rushed, electric current I will be produced in tested earth-return circuit in the presence of potential E, and by being measured to E and I, and pass through public affairs Formula:R=E/I can obtain tested ground loop resistance, relative to traditional measuring method, it need not cut off device power supply (DPS) and Auxiliary earth pole is set, thus on-line measurement can be realized.R in Fig. 2xFor grounding resistance to be measured, RearthFor ground resistance, R1、 R2……RnFor n grounding resistance in parallel, then it is R to be tested loop all-in resistanceloop=Rx+Rearth+R1∥R2∥R3∥…∥RnBy In RearthAnd R1∥R2∥R3∥…∥RnParallel value it is all very small, it can be considered that tested loop resistance Rloop=Rx

Claims (7)

  1. A kind of 1. pole tower ground resistance measuring circuit, it is characterised in that:Including grounding resistance measurement circuit, clock circuit, button Circuit, microcontroller circuit, communication interface circuit, display circuit, power module, solar battery group and GPRS module;It is described Grounding resistance measurement circuit output end and microcontroller circuit I/O mouths connect;The output end of described clock circuit with The I/O mouths connection of microcontroller circuit;The output end of described key circuit and the I/O mouths of microcontroller circuit connect;It is described Communication interface circuit input and microcontroller circuit port connect;The output end of described communication interface circuit with The input connection of GPRS module;The input of described display circuit and the I/O mouths of microcontroller circuit connect;Described electricity The output end of source module and the power end of microcontroller circuit connect, the input and solar battery group of described power module Output end connection.
  2. A kind of 2. pole tower ground resistance measuring circuit according to claim 1, it is characterised in that:Described grounding resistance is surveyed Amount circuit includes the first iron core, the first iron-core coil, the second iron core and the second iron-core coil;Described the first iron core and the second iron Core material is permalloy;First iron-core coil and the second iron-core coil are enamel-covered wire coiling, respectively the circle of coiling 50 and 500 Circle.
  3. A kind of 3. pole tower ground resistance measuring circuit according to claim 1, it is characterised in that:Described clock circuit is adopted Use DS1302.
  4. A kind of 4. pole tower ground resistance measuring circuit according to claim 1, it is characterised in that:Described solar cell Group by solar panel and lithium battery group into.
  5. A kind of 5. pole tower ground resistance measuring circuit according to claim 1, it is characterised in that:Described key circuit is adopted With 4 touch keys, different size of grounding resistance alarming value is set.
  6. A kind of 6. pole tower ground resistance measuring circuit according to claim 1, it is characterised in that:Described microprocessor electricity Road uses STM32 single-chip microcomputers.
  7. A kind of 7. pole tower ground resistance measuring circuit according to claim 1, it is characterised in that:Described display circuit is adopted Shown with liquid crystal display.
CN201720818189.4U 2017-07-07 2017-07-07 Pole tower ground resistance measuring circuit Active CN206930718U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720818189.4U CN206930718U (en) 2017-07-07 2017-07-07 Pole tower ground resistance measuring circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720818189.4U CN206930718U (en) 2017-07-07 2017-07-07 Pole tower ground resistance measuring circuit

Publications (1)

Publication Number Publication Date
CN206930718U true CN206930718U (en) 2018-01-26

Family

ID=61354180

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720818189.4U Active CN206930718U (en) 2017-07-07 2017-07-07 Pole tower ground resistance measuring circuit

Country Status (1)

Country Link
CN (1) CN206930718U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109490635A (en) * 2018-12-25 2019-03-19 国网江苏省电力有限公司南京供电分公司 Pole tower ground resistance on-line monitoring system and on-line monitoring method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109490635A (en) * 2018-12-25 2019-03-19 国网江苏省电力有限公司南京供电分公司 Pole tower ground resistance on-line monitoring system and on-line monitoring method
CN109490635B (en) * 2018-12-25 2021-11-26 国网江苏省电力有限公司南京供电分公司 Online monitoring system and online monitoring method for tower grounding resistance

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