CN2526856Y - Lightning arrestor impulse current recorder - Google Patents
Lightning arrestor impulse current recorder Download PDFInfo
- Publication number
- CN2526856Y CN2526856Y CN 02219071 CN02219071U CN2526856Y CN 2526856 Y CN2526856 Y CN 2526856Y CN 02219071 CN02219071 CN 02219071 CN 02219071 U CN02219071 U CN 02219071U CN 2526856 Y CN2526856 Y CN 2526856Y
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- current
- lightning arrester
- dash
- inductive coil
- dash current
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Abstract
A record device used for recording dividing action of surge current of a lightning arrester has the structure that mainly consists of at least two apposite or paralleled surge current meters with different starting current which is increased grade by grade. The surge current meter comprises an induction coil CT, a current limited resistor R, a rectifier D, a capacitor C and an action meter PC, wherein, two or more apposite surge current meters use the independent induction coil CT, and two or more paralleled surge current meter can share one induction coil CT. The induction coil CT is arranged near the lightning arrester or a current carrying conductor of the lightning arrester. The utility model has the advantages of reasonable design, simple structure, low production cost, being capable of recording times and amplitude of the surge current, etc. The device can be arranged on the lightning arrester of an electric network or the lightning arrester device of buildings, thus providing important design parameter for over voltage protection work in an electric network station.
Description
Technical field:
The utility model relates to a kind of device that writes down dash current number of times and dash current size, and particularly a kind of dash current pen recorder that is installed on the high-tension network lightning arrester belongs to the proving installation of electrical property.
Background technology:
The Insulation Coordination of electrical equipment is the residual voltage based on lightning arrester in the high-tension network, and the residual voltage of so-called lightning arrester is meant when specified dash current passes through lightning arrester, the voltage difference at lightning arrester two ends.By the specified dash current of lightning arrester is based on the extensive statistics by the lightning arrester electric current.As everyone knows, lightning current is at random, have only the amplitude of a large amount of statistics by the lightning arrester lightning current, could be familiar with the rationality that insulation of electrical installation cooperates, especially when power house or transformer station's near region thunderbolt, the timely record of the thunder-strike current by lightning arrester will substantially exceed the specified dash current of lightning arrester by the thunder-strike current of lightning arrester, if will be a big defective of lightning protection work.The once used lightning current device that writes down mainly contains: 1, magnetic link; This is that a magnetic link is placed near the current, the magnetic field that utilizes electric current to produce makes the magnetic link magnetization, after lightning current passes through, remanent magnetism on the magnetic link is relevant with amplitude of lightning current, by measuring residual magnetization, calculate the amplitude of lightning current, though the simple complicated operation of this equipment, workload is big, and the scene does not re-use.2, electronic type transient state storage register; Utilization has the amplitude of the oscillograph or the digital watch record thunder-strike current of transient state memory function, but because of the apparatus structure complexity, can not widespread use.3.ZL99229282-4 number Chinese patent discloses the multi-functional on-line monitoring device of a kind of lightning arrester, its structure comprises a dash current counting device and inner leakage current of lightning arrester and outside filthy degree monitor, have the lightning arrester insulator outside surface leakage current situation of detection and detect the outside filthy degree situation of lightning arrester and write down and suffer the function of dash current number of times, but can not write down the size of dash current amplitude simultaneously, the parameter of quantitative test can not be provided the design of location lightning protection device.
Summary of the invention:
The purpose of this utility model is in order to overcome the weak point of above-mentioned existing dash current pen recorder, for lightning protection work particularly provides the parameter of qualitative and quantitative analysis to the lightning protection work of power network, design a kind of simple and reasonable, easy to use, can write down dash current particularly the number of times of lightning impulse current can write down the lightning arrester dash current score value action record device of dash current amplitude size again.
Lightning arrester dash current score value action record device of the present utility model, its structure mainly comprise at least two dash current counting devices that starting current arranged side by side or in parallel is different, and the starting current of each dash current counting device increases step by step.The structure of described dash current counting device mainly comprises inductive coil CT, current-limiting resistance R, rectifier D, capacitor C and operation counter PC, wherein, two or more dash current arranged side by side counting devices use independently inductive coil CT respectively, its circuit connecting relation is: inductive coil CT is connected with rectifier D with current-limiting resistance R series connection back, and the output terminal of rectifier D is connected with operation counter PC with filter capacitor C; Two or more dash currents in parallel counting devices then can a shared inductive coil CT, its circuit connecting relation mainly be with current-limiting resistance R by respectively with separately independently inductive coil CT be connected to change into all and be connected with same inductive coil.Described inductive coil CT is installed near the current of lightning arrester, makes the primary coil of inductive coil CT with current.
Lightning arrester dash current score value action record device of the present utility model.Have reasonable in design, simple in structure, production cost is low, can count the record number of times of dash current and the amplitude range of dash current, from the numeral of record, can analyze the advantages such as amplitude range of thunderbolt number of times and thunder-strike current easily, can be installed on the lightning arrester of power network, also can be installed on the monitor of lightning arrester, also can be installed on the lightning protection of buildings, for building lightning protection work provides important design parameter, particularly the lightning Protection Design of building is more reasonable to make power network and various buildings.
Description of drawings:
Fig. 1 is a block form circuit connection diagram of the present utility model;
Fig. 2 is a parallel circuit connection diagram of the present utility model;
Fig. 3 has 8 dash current counting device panel-shaped synoptic diagram in the utility model;
Fig. 4 is the panel-shaped synoptic diagram that has 4 dash current counting devices in the utility model and the inner leakage current monitoring device of lightning arrester is housed;
Fig. 5 is the panel-shaped synoptic diagram that has 6 dash current counting devices in the utility model and inner leakage current of lightning arrester and outside filthy degree monitor are housed.
Embodiment:
Referring to accompanying drawing 1, each dash current counting device of this figure uses separately independently inductive coil CT respectively, its circuit connecting relation is: inductive coil CT is connected with rectifier D with current-limiting resistance R series connection back, and the output terminal of rectifier D is connected with operation counter PC with filter capacitor C.The starting current of each dash current counting device varies in size and increases step by step, adjusts the number of turns of inductive coil CT or the resistance of adjustment current-limiting resistance and can adjust the starting current that dash current is counted device.Described inductive coil CT is installed near the current of lightning arrester or lightning protection, makes the primary coil of inductive coil CT with current.N dash current counting device for example arranged, and the starting current of each dash current counting device is respectively I
1, I
2, I
3... .In, and I
1＜I
2＜I
3＜....＜In.As a certain dash current I
kBy the time, if I
2＜I
k＜I
3, I then
1And I
2Two each meters of dash current counting device are recorded once I
3Reaching above dash current counting device does not all have the meter record, according to the numerical code of operation counter PC rotation, just can know I
kThe dash current amplitude at I
2With I
3Between.Be described further for example, if any 8 dash current counting devices, the starting current of each dash current counting device is respectively I
1=0.5KA, I
2=1KA, I
3=2.5KA, I
4=5.0KA, I
5=7.5KA, I
6=10KA, I
7=15KA, I
8=20KA is if there is I
kWhen the dash current of=8KA passes through, because the 8KA electric current is greater than I
1, I
2, I
3, I
4, I
5Starting current, less than I
6, I
7, I
8Starting current, following dash current counting device all increases a numeral so starting current is 7.5KA, and the numeral of the dash current counting device of starting current more than 10KA does not increase, and can determine that in view of the above the current amplitude of this dash current is between 7.5-10KA.And for example, the numeral of the dash current counting device of 20KA is 1, the numeral of the dash current counting device of 15KA is 2, and the numeral that 10KA impacts counter is 10 o'clock, and hence one can see that, this lightning arrester be subjected to current amplitude be the above impact of 20KA once, amplitude be 15-20KA impact once, amplitude is the impact 8 times of 10-15KA, if the maximum impact electric current during this operation of power networks is generally below 10KA, analyze thus as can be known, be the thunderbolt number of times greater than the impact number of times of 10KA.If when being contained on the lightning protection of buildings, then all be that thunderbolt is done owing to do not have other dash current, its numeral.If the quantity of dash current counting device is many more, the interval of starting current is more little, and the amplitude range of record dash current is then accurate more; Otherwise if impact the negligible amounts of counter, the interval of starting current is bigger, and the amplitude range of record dash current is broad then, so the quantity of the dash current counting device in the utility model should be no less than 2.Accompanying drawing 2 is circuit connection diagrams of parallel structure, its circuit connecting relation mainly be with current-limiting resistance R by respectively with separately independently inductive coil CT be connected to change into all and be connected with same inductive coil CT, other is identical with above-mentioned block form structure, and the resistance of adjusting current-limiting resistance R can be adjusted the size of starting current.The utility model can be directly installed on the lightning arrester of power network, also can be installed on the inner leakage current monitoring device of lightning arrester or inner leakage current of lightning arrester and the outside filthy degree monitor, its panel-shaped is respectively as Fig. 3, Fig. 4 and shown in Figure 5, among its Fig. 3-Fig. 51 is operation counter, among Fig. 4 and Fig. 52 is reometers of the inner leakage current monitoring device of lightning arrester, and 3 among Fig. 5 is filthy kilsyth basalts of the outside filthy degree monitor of lightning arrester.
Claims (2)
1, a kind of lightning arrester dash current score value action record device is characterized in that comprising at least two dash current counting devices that starting current arranged side by side or in parallel is different, and the starting current of each dash current counting device increases step by step.
2, lightning arrester dash current score value action record device as claimed in claim 1, it is characterized in that dash current counting device comprises inductive coil CT, current-limiting resistance R, rectifier D, capacitor C and operation counter PC, wherein, two or more dash current arranged side by side counting devices use independently inductive coil CT respectively, its circuit connecting relation is: inductive coil CT is connected with rectifier D with current-limiting resistance R series connection back, and the output terminal of rectifier D is connected with operation counter PC with filter capacitor C; Two or more dash currents in parallel counting devices then can a shared inductive coil CT, its circuit connecting relation mainly be with current-limiting resistance R by respectively with separately independently inductive coil CT be connected to change into all and be connected with same inductive coil CT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02219071 CN2526856Y (en) | 2002-02-27 | 2002-02-27 | Lightning arrestor impulse current recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02219071 CN2526856Y (en) | 2002-02-27 | 2002-02-27 | Lightning arrestor impulse current recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2526856Y true CN2526856Y (en) | 2002-12-18 |
Family
ID=33697616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02219071 Expired - Fee Related CN2526856Y (en) | 2002-02-27 | 2002-02-27 | Lightning arrestor impulse current recorder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2526856Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237124B (en) * | 2008-02-01 | 2012-04-25 | 武汉水院电气有限责任公司 | Status indicator of arrester with gap line |
| CN102818961A (en) * | 2012-09-05 | 2012-12-12 | 中国超高压输变电建设公司 | Lightning energy-taking device for lightning arrester monitoring device |
| CN104901168A (en) * | 2015-06-17 | 2015-09-09 | 南阳金牛电气有限公司 | Lightning arrester with counting function |
-
2002
- 2002-02-27 CN CN 02219071 patent/CN2526856Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237124B (en) * | 2008-02-01 | 2012-04-25 | 武汉水院电气有限责任公司 | Status indicator of arrester with gap line |
| CN102818961A (en) * | 2012-09-05 | 2012-12-12 | 中国超高压输变电建设公司 | Lightning energy-taking device for lightning arrester monitoring device |
| CN104901168A (en) * | 2015-06-17 | 2015-09-09 | 南阳金牛电气有限公司 | Lightning arrester with counting function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |