CN111856093A - Pendulum type grounding rod design method and system for eliminating space electric field measurement accumulated charges - Google Patents
Pendulum type grounding rod design method and system for eliminating space electric field measurement accumulated charges Download PDFInfo
- Publication number
- CN111856093A CN111856093A CN202010530197.5A CN202010530197A CN111856093A CN 111856093 A CN111856093 A CN 111856093A CN 202010530197 A CN202010530197 A CN 202010530197A CN 111856093 A CN111856093 A CN 111856093A
- Authority
- CN
- China
- Prior art keywords
- metal rod
- rod
- ground
- field
- field mill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 31
- 230000005684 electric field Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 92
- 238000005070 sampling Methods 0.000 claims abstract description 10
- 238000009825 accumulation Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a design method of a pendulum type grounding rod for eliminating space electric field measurement accumulated charges, which comprises the following steps: arranging an insulating rod to be vertical to the ground, wherein the first end of the insulating rod is grounded, and the second end of the insulating rod supports the field mill; grounding a fixed end of a metal rod, wherein the metal rod swings in a range of 0-90 degrees with the ground; the movable end of the metal rod is in contact with the field mill when the metal rod is at 90 degrees to the ground; the metal rod and the insulating rod are the same in length; and setting the swinging time of the metal rod according to the sampling interval of the field mill, and swinging the metal rod to the ground after sufficient charge discharge of the field mill when the metal rod is in contact with the field mill.
Description
Technical Field
The invention relates to the technical field of electromagnetic measurement, in particular to a pendulum type grounding rod design method and a pendulum type grounding rod design system for eliminating space electric field measurement accumulated charges.
Background
The existing direct current electric field measuring device is a field mill type sensor for measuring a direct current electric field near the ground, the working principle is that a rotating voltmeter is adopted, under the action of the direct current electric field, a stator of a rotating blade of the rotating voltmeter generates an induced current which is proportional to the field intensity value of the direct current electric field, the current and voltage are converted, and a direct current voltage is output after amplification, rectification, filtering and conditioning. The dc voltage represents the value of the dc electric field near the surface of its rotating blades. The electric field value under the actual line can be converted through the calibration of the direct current electric field calibration device.
If the field mill type field intensity meter with the working principle is used for measuring a space electric field, the problem of suspension grounding exists, namely, if the shell of the field mill type field intensity meter is grounded, the point position of a measuring point is influenced by forced grounding; however, if the grounding is not performed, the field mill works in the situation of full space charge, and charges are accumulated on the field mill blades, so that an electrostatic field is formed, and the charge accumulation effect can cause the value to be read incorrectly along with the irregular change of the accumulated charges.
Therefore, there is a need for a technique to achieve a pendulum ground rod design for eliminating the space electric field measurement accumulated charge.
Disclosure of Invention
The technical scheme of the invention provides a pendulum type grounding rod design method and a pendulum type grounding rod design system for eliminating space electric field measurement accumulated charges, so as to solve the problem of inaccurate measurement caused by space charge accumulation effect.
In order to solve the above problems, the present invention provides a pendulum type ground rod design method for eliminating space electric field measurement accumulated charges, the method comprising:
arranging an insulating rod to be vertical to the ground, wherein the first end of the insulating rod is grounded, and the second end of the insulating rod supports the field mill;
grounding a fixed end of a metal rod, wherein the metal rod swings in a range of 0-90 degrees with the ground; the movable end of the metal rod is in contact with the field mill when the metal rod is at 90 degrees to the ground; the metal rod and the insulating rod are the same in length;
and setting the swinging time of the metal rod according to the sampling interval of the field mill, and swinging the metal rod to the ground after sufficient charge discharge of the field mill when the metal rod is in contact with the field mill.
Preferably, the movable end of the metal rod is a smooth surface.
Preferably, the method comprises the following steps: and controlling the swing of the metal rod through a motor.
Based on another aspect of the invention, the invention provides a pendulum type grounding rod design system for eliminating space electric field measurement accumulated charges, the system comprising: an insulating rod, a metal rod and a field mill;
Arranging an insulating rod to be vertical to the ground, wherein the first end of the insulating rod is grounded, and the second end of the insulating rod supports the field mill;
grounding a fixed end of a metal rod, wherein the metal rod swings in a range of 0-90 degrees with the ground; the movable end of the metal rod is in contact with the field mill when the metal rod is at 90 degrees to the ground; the metal rod and the insulating rod are the same in length;
and setting the swinging time of the metal rod according to the sampling interval of the field mill, and swinging the metal rod to the ground after sufficient charge discharge of the field mill when the metal rod is in contact with the field mill.
Preferably, the movable end of the metal rod is a smooth surface.
Preferably, the method comprises the following steps: and controlling the swing of the metal rod through a motor.
The technical scheme of the invention provides a pendulum type grounding rod design method and a pendulum type grounding rod design system for eliminating space electric field measurement accumulated charges, wherein the method comprises the following steps: the method comprises the following steps that an insulating rod is perpendicular to the ground, the first end of the insulating rod is grounded, and the second end of the insulating rod supports a field mill; grounding the fixed end of the metal rod, and swinging the metal rod within the range of 0-90 degrees with the ground; when the metal rod is at 90 degrees to the ground, the movable end of the metal rod is contacted with the field mill; the metal rod and the insulating rod have the same length; the swing time of the metal rod is set according to the sampling interval of the field mill, and when the metal rod is in contact with the field mill, the metal rod swings to the ground after sufficient charge discharge of the field mill. The technical scheme of the invention adopts the pendulum type grounding rod to eliminate the space electric field measurement accumulated charges under the condition of not changing the potential of the measurement point, thereby solving the problem of inaccurate measurement caused by the space charge accumulation effect.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
FIG. 1 is a flow chart of a pendulum grounding bar design method for eliminating space electric field measurement accumulated charge according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the results of measurements using a pendulum type grounding rod and a floating non-grounding in accordance with a preferred embodiment of the present invention; and
fig. 3 is a structural diagram of a pendulum type ground rod design system for eliminating accumulated charges in space electric field measurement according to a preferred embodiment of the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Fig. 1 is a flow chart of a pendulum type grounding rod design method for eliminating space electric field measurement accumulated charges according to a preferred embodiment of the invention. The invention provides a design method of a pendulum type grounding metal rod for eliminating space electric field measurement accumulated charges, which is characterized in that the pendulum type grounding metal rod is adopted to regularly and discontinuously ground the accumulated charges on a field grinding blade, a discharge channel is provided for the accumulated charges when the metal rod is grounded, and the accumulated charges are disconnected during measurement without influencing the measurement, so that the problem of inaccurate measurement caused by space charge accumulation effect is solved. As shown in fig. 1, the invention provides a pendulum type grounding rod design method for eliminating space electric field measurement accumulated charges, the method comprising:
preferably, in step 101: arranging an insulating rod vertically to the ground, grounding a first end of the insulating rod, and supporting a field mill by a second end of the insulating rod;
preferably, at step 102: grounding the fixed end of the metal rod, and swinging the metal rod within the range of 0-90 degrees with the ground; when the metal rod is at 90 degrees to the ground, the movable end of the metal rod is contacted with the field mill; the metal rod and the insulating rod have the same length;
preferably, in step 103: the swing time of the metal rod is set according to the sampling interval of the field mill, and when the metal rod is in contact with the field mill, the metal rod swings to the ground after sufficient charge discharge of the field mill.
Preferably, the movable end of the metal rod is a smooth surface.
Preferably, the method comprises the following steps: the swing of the metal rod is controlled by a motor.
The invention provides a design method of a pendulum type grounding rod for eliminating space electric field measurement accumulated charges. The specific idea is as follows:
1. an insulating rod support is adopted for a support of the field mill sensor, and the field mill is firmly supported;
2. a pendulum type movable metal rod, the movable range of which is from horizontal to vertical (90-degree range), the length of the metal rod is equal to that of the insulating rod bracket, as shown in fig. 3;
3. the fixed end of the metal rod is reliably grounded;
4. the movable end of the metal rod keeps smooth, and the metal rod is ensured to be just contacted when rotating to the field grinding position;
5. the swinging of the metal rod is controlled by a motor, the swinging time of the metal rod is set according to the sampling interval of the field mill, the pause time when the metal rod reaches the position of the field mill is set, and sufficient time for charge discharge is ensured.
In the environment of space ion saturation, probes which adopt a pendulum type grounding rod and a suspension probe and are not grounded are simultaneously compared and detected, and the result is shown in fig. 2: the floating ungrounded probe is found, output data cannot be stable and is increased all the time along with the time, and finally, the measured value tends to be stable along with the saturation of space charges on the blade, but the value at the moment loses the credibility; and the probe adopting the pendulum type grounding rod outputs stable data.
The comparison data in fig. 2 shows that the probe adopting the pendulum type ground rod is adopted in the invention, and the pendulum type ground rod is adopted to discharge the accumulated charges of the field grinding sensor, so that the space charge accumulation can be well eliminated, and the accuracy of measurement is ensured.
The invention sets the swing time of the pendulum type metal rod according to the sampling interval of the field mill, sets the pause time when the metal rod reaches the position of the field mill, and ensures that sufficient time is available for charge discharge.
Fig. 3 is a structural diagram of a pendulum type ground rod design system for eliminating accumulated charges in space electric field measurement according to a preferred embodiment of the present invention. As shown in fig. 3, the present invention provides a pendulum type grounding rod design system for eliminating space electric field measurement accumulated charges, the system comprising: insulating rods (insulation, metal rods and field mills in the figure;
arranging an insulating rod vertically to the ground, grounding a first end of the insulating rod, and supporting a field mill by a second end of the insulating rod;
grounding the fixed end of the metal rod, and swinging the metal rod within the range of 0-90 degrees with the ground; when the metal rod is at 90 degrees to the ground, the movable end of the metal rod is contacted with the field mill; the metal rod and the insulating rod have the same length;
The swing time of the metal rod is set according to the sampling interval of the field mill, and when the metal rod is in contact with the field mill, the metal rod swings to the ground after sufficient charge discharge of the field mill.
Preferably, the movable end of the metal rod is a smooth surface.
Preferably, the method comprises the following steps: the swing of the metal rod is controlled by a motor.
The pendulum type ground rod design system for eliminating the space electric field measurement accumulated charges according to the preferred embodiment of the present invention corresponds to the pendulum type ground rod design method 100 for eliminating the space electric field measurement accumulated charges according to the preferred embodiment of the present invention, and will not be described herein again.
The invention has been described with reference to a few embodiments. However, other embodiments of the invention than the one disclosed above are equally possible within the scope of the invention, as would be apparent to a person skilled in the art from the appended patent claims.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [ device, component, etc ]" are to be interpreted openly as referring to at least one instance of said device, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
Claims (6)
1. A pendulum grounding bar design method for eliminating space electric field measurement accumulated charge, the method comprising:
arranging an insulating rod to be vertical to the ground, wherein the first end of the insulating rod is grounded, and the second end of the insulating rod supports the field mill;
grounding a fixed end of a metal rod, wherein the metal rod swings in a range of 0-90 degrees with the ground; the movable end of the metal rod is in contact with the field mill when the metal rod is at 90 degrees to the ground; the metal rod and the insulating rod are the same in length;
and setting the swinging time of the metal rod according to the sampling interval of the field mill, and swinging the metal rod to the ground after sufficient charge discharge of the field mill when the metal rod is in contact with the field mill.
2. The method of claim 1, wherein the free end of the metal rod is a smooth surface.
3. The method of claim 1, comprising: and controlling the swing of the metal rod through a motor.
4. A pendulum grounding rod design system for eliminating space electric field measurement accumulated charge, the system comprising: an insulating rod, a metal rod and a field mill;
arranging an insulating rod to be vertical to the ground, wherein the first end of the insulating rod is grounded, and the second end of the insulating rod supports the field mill;
Grounding a fixed end of a metal rod, wherein the metal rod swings in a range of 0-90 degrees with the ground; the movable end of the metal rod is in contact with the field mill when the metal rod is at 90 degrees to the ground; the metal rod and the insulating rod are the same in length;
and setting the swinging time of the metal rod according to the sampling interval of the field mill, and swinging the metal rod to the ground after sufficient charge discharge of the field mill when the metal rod is in contact with the field mill.
5. The system of claim 4, wherein the free end of the metal rod is a smooth surface.
6. The system of claim 4, comprising: and controlling the swing of the metal rod through a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010530197.5A CN111856093A (en) | 2020-06-11 | 2020-06-11 | Pendulum type grounding rod design method and system for eliminating space electric field measurement accumulated charges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010530197.5A CN111856093A (en) | 2020-06-11 | 2020-06-11 | Pendulum type grounding rod design method and system for eliminating space electric field measurement accumulated charges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111856093A true CN111856093A (en) | 2020-10-30 |
Family
ID=72987582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010530197.5A Pending CN111856093A (en) | 2020-06-11 | 2020-06-11 | Pendulum type grounding rod design method and system for eliminating space electric field measurement accumulated charges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111856093A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6984971B1 (en) * | 2001-03-14 | 2006-01-10 | The Board Of Regents University Of Oklahoma | Low power, low maintenance, electric-field meter |
| CN204989326U (en) * | 2015-08-21 | 2016-01-20 | 北京华云东方探测技术有限公司 | Atmosphere electric field appearance |
| CN208723121U (en) * | 2018-09-17 | 2019-04-09 | 华高电气(湖北)有限公司 | Impulse voltage generator earthing or grounding means |
| CN109709408A (en) * | 2019-03-08 | 2019-05-03 | 广东省职业病防治院 | Space direct current electric field measuring equipment |
| CN110045254A (en) * | 2019-05-27 | 2019-07-23 | 国家电网有限公司 | A kind of multistation insulating bar segmented pressure test device |
| CN209746018U (en) * | 2019-04-02 | 2019-12-06 | 国家林业和草原局哈尔滨林业机械研究所 | Moving plate grounding device based on field grinding type atmospheric electric field measurement system |
-
2020
- 2020-06-11 CN CN202010530197.5A patent/CN111856093A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6984971B1 (en) * | 2001-03-14 | 2006-01-10 | The Board Of Regents University Of Oklahoma | Low power, low maintenance, electric-field meter |
| CN204989326U (en) * | 2015-08-21 | 2016-01-20 | 北京华云东方探测技术有限公司 | Atmosphere electric field appearance |
| CN208723121U (en) * | 2018-09-17 | 2019-04-09 | 华高电气(湖北)有限公司 | Impulse voltage generator earthing or grounding means |
| CN109709408A (en) * | 2019-03-08 | 2019-05-03 | 广东省职业病防治院 | Space direct current electric field measuring equipment |
| CN209746018U (en) * | 2019-04-02 | 2019-12-06 | 国家林业和草原局哈尔滨林业机械研究所 | Moving plate grounding device based on field grinding type atmospheric electric field measurement system |
| CN110045254A (en) * | 2019-05-27 | 2019-07-23 | 国家电网有限公司 | A kind of multistation insulating bar segmented pressure test device |
Non-Patent Citations (1)
| Title |
|---|
| 宋欣等: "场磨式电场仪在雷电预警中的研究与应用", 《自动化与仪表》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101272130B1 (en) | Method of and device for insulation monitoring | |
| CN108573224B (en) | Bridge structure damage positioning method for mobile reconstruction of principal components by using single sensor information | |
| BRPI0708775A2 (en) | METHOD AND DEVICE FOR INDICATING AN ELECTRICAL DISCHARGE IN A NON-CONDUCTIVE MEDIUM BETWEEN A BEARING ELEMENT AND A CONDUCTOR IN A BEARING OF AN ELECTRIC DRIVE SYSTEM | |
| US10663510B2 (en) | Insulation detecting method for electric machine | |
| CN105738807B (en) | A kind of high speed dynamic pressure gyro machine contacts to earth rotary speed test system | |
| CN101706528A (en) | Insulator voltage online measurement sensor for power transmission line | |
| CN111381071A (en) | Speed abnormity detection device and method based on Hall sensor | |
| CN107588756A (en) | Electric power pylon gradient and the long-range monitoring and evaluation system of torsion resistance and method | |
| CN111856093A (en) | Pendulum type grounding rod design method and system for eliminating space electric field measurement accumulated charges | |
| CN102323508A (en) | Performance online detection device of induction type oxide arrester | |
| CN210514599U (en) | Non-contact electrostatic detector calibrating device | |
| CN102446561B (en) | Horizontality adjustment system, gradienter and ball sliding rheostat | |
| JP2011085526A (en) | Lightning strike charge evaluating system, lightning strike determination method, and lightning strike charge evaluation method | |
| CN100460883C (en) | Detection method for testing current in resistance property of lightning arrester | |
| CN110308413A (en) | A kind of contactless static detector calibrating installation and calibration method | |
| CN108037053B (en) | Intelligent hydrologic survey Sand device and method | |
| CN211955708U (en) | Capacitor implosion detection circuit | |
| CN110296743B (en) | Method for calculating flow rate using electromagnetic flowmeter | |
| CN104614578A (en) | Method and system for determining wave-head time | |
| EP3311177B1 (en) | Weather resistant ungrounded power line sensor | |
| AU2014262818B2 (en) | Apparatus and method for determining one or more characteristics of a viscous material | |
| CN209894109U (en) | Simple and easy portable three-dimensional deformation monitoring devices | |
| CN201355265Y (en) | Oil level sensor | |
| US7508187B2 (en) | Device and system for the measurement of an external electrostatic field, and system and method for the detection of storms | |
| CN110244107B (en) | Wide-area end screen grounding current two-dimensional map expression method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |