CN211265136U - Novel intelligent insulator and device for 10kV line - Google Patents
Novel intelligent insulator and device for 10kV line Download PDFInfo
- Publication number
- CN211265136U CN211265136U CN201922371092.5U CN201922371092U CN211265136U CN 211265136 U CN211265136 U CN 211265136U CN 201922371092 U CN201922371092 U CN 201922371092U CN 211265136 U CN211265136 U CN 211265136U
- Authority
- CN
- China
- Prior art keywords
- insulator
- rogowski coil
- novel intelligent
- resistance
- voltage
- 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.)
- Active
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 56
- 239000004020 conductor Substances 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 2
- 230000005294 ferromagnetic effect Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical class [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 239000003302 ferromagnetic material Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000005350 ferromagnetic resonance Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses a novel intelligent insulator and a device for a 10kV line, which comprises a shell, a fixing bolt, a Rogowski coil, a resistance-capacitance divider and a secondary shielding cable; the Rogowski coil, the resistance-capacitance voltage divider and the secondary shielding cable are sequentially connected. The utility model discloses in the shell of insulator, be provided with rogowski coil and resistance-capacitance voltage divider to connect rogowski coil, resistance-capacitance voltage divider and secondary shielded cable order. The insulator can realize current monitoring on the overhead conductor by using the Rogowski coil while supporting the cable and insulating high voltage, and simultaneously, the voltage monitoring is carried out on the overhead conductor by using the resistance-capacitance voltage divider, so that the intelligent insulator also has the current and voltage monitoring function of the traditional combined transformer. The utility model discloses but wide application in insulator technical field.
Description
Technical Field
The utility model relates to an insulator technical field especially relates to a novel intelligent insulator and device for 10kV circuit.
Background
The existing supporting insulator is used on a 10kV line, a high-voltage wire is isolated from the ground, the cable and the high-voltage insulation are supported, and the basic structure of the supporting insulator is that epoxy resin is poured into an umbrella-shaped structure, so that the creepage distance is prolonged, and high-voltage flashover breakdown is prevented. The conventional support insulator does not have the function of monitoring the voltage to ground on the line and the line-carrying current. If voltage and current are to be monitored, a combined transformer needs to be installed. The combined transformer is a transformer formed by combining a voltage transformer and a current transformer into a whole, and can realize the function of measuring current and voltage at the same time.
The voltage transformer has the basic structure of an iron core, a primary side winding and a secondary side winding and is used for measuring voltage, the voltage transformer has the defect that secondary impedance is very small, and once the secondary side is short-circuited, short-circuit current rapidly increases to burn out a coil, so that a fire accident is caused. The current transformer has the defects that the secondary side is not allowed to be opened during operation, and once the primary side is opened, the primary side current becomes the exciting current, so that the magnetic flux and the voltage of the secondary side greatly exceed normal values, thereby endangering the safety of human bodies and equipment. Due to the existence of the iron core structure, ferromagnetic resonance overvoltage can not be avoided, and when overvoltage is generated, the excitation current of a winding of the transformer is greatly increased due to the saturation of the iron core of the transformer, so that the operation safety of equipment and a power grid is influenced.
In addition, the combined mutual inductor has large volume and heavy weight, and must be installed on a metal bracket which is fixed on an electric pole, so that the combined mutual inductor has complicated construction and large workload of later maintenance.
In summary, there is currently no new intelligent insulator for 10kV lines that combines voltage and current monitoring functions.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a novel intelligent insulator and device for 10kV circuit, the insulator has voltage and current monitoring function concurrently.
The utility model relates to a novel intelligent insulator for 10kV lines, which comprises a shell, a fixing bolt, a Rogowski coil, a resistance-capacitance divider and a secondary shielding cable; the Rogowski coil, the resistance-capacitance voltage divider and the secondary shielding cable are sequentially connected.
Furthermore, the number of the fixing bolts is two, and the fixing bolts are arranged at the top of the shell.
Furthermore, two opposite wire holes are arranged in the middle of the top of the shell.
Further, the Rogowski coil is an air coil, the hollow part of the Rogowski coil is concentric with the wire hole, and the overhead wire penetrates through the hollow part of the Rogowski coil.
Furthermore, the Rogowski coil comprises a coil and an integrator, and the coil is uniformly wound on the non-ferromagnetic material
On the substance.
Furthermore, the shell is in the shape of a supporting insulator, and 4 disc-shaped insulators are arranged in the middle of the shell.
Further, the resistance-capacitance voltage divider comprises a high-voltage acquisition end and an acquisition terminal; the high-voltage acquisition end is provided with a copper insert and is in direct contact with the overhead conductor through the copper insert; the acquisition terminal is connected with the secondary shielding cable.
The utility model also provides a novel intelligent insulator device for 10kV lines, which comprises 3 novel intelligent insulators for 10kV lines and an installation bottom plate; 3 intelligent insulators are fixed on the upper side of the mounting bottom plate.
Through the technical scheme, the utility model discloses in the shell of insulator, be provided with rogowski coil and resistance-capacitance divider to connect rogowski coil, resistance-capacitance divider and secondary shielded cable in proper order. The insulator can be used for monitoring the current of the overhead conductor by using the Rogowski coil while supporting the cable and insulating the high voltage, and meanwhile, the resistance-capacitance voltage divider is used for monitoring the voltage of the overhead conductor, so that the intelligent insulator has the monitoring function of the voltage and the current.
Drawings
Fig. 1 is a schematic structural diagram of a novel intelligent insulator for a 10kV line;
fig. 2 is a schematic structural diagram of a novel intelligent insulator device for a 10kV line;
FIG. 3 is a circuit schematic of a Rogowski coil;
fig. 4 is a circuit schematic of a resistor-capacitor voltage divider.
Description of reference numerals: 101: fixing the bolt; 102: a wire guide hole; 103: a Rogowski coil; 104: a resistive-capacitive voltage divider; 105: an epoxy resin housing; 106: a secondary shielded cable; 201: an intelligent insulator; 202: a disk-shaped insulator; 203: mounting a bottom plate; 301: and a coil.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a novel intelligent insulator for a 10kV line includes a housing, a fixing bolt, a rogowski coil, a resistance-capacitance divider and a secondary shielding cable; the Rogowski coil, the resistance-capacitance voltage divider and the secondary shielding cable are sequentially connected.
As a preferred embodiment, the utility model discloses a two fixing bolt, set up at the shell top. And two opposite wire holes are arranged in the middle of the top of the shell. The aerial bare conductor passes through the conductor hole, then the bare conductor with 10kV high voltage can be separated from the ground by the insulator, and two fixing bolts arranged at the top of the shell compress the conductor in the hole, so that the purpose of fixing the high voltage conductor is achieved.
Referring to fig. 3, the rogowski coil is an air coil, a hollow portion of the rogowski coil is concentric with a wire guide hole, and an overhead wire passes through the hollow portion of the rogowski coil. The Rogowski coil comprises a coil and an integrator, wherein the coil does not contain an iron core, is a flexible coil, has certain plasticity, is uniformly wound on a non-ferromagnetic material and is a current induction part. As shown in fig. 3, when a current flows through the line, an induced voltage is generated at both ends of the rogowski coil according to the ampere-loop theorem, the induced voltage is in a direct proportion relation with the current flowing through the line, and the rogowski coil amplifies and integrates an induced voltage signal output by the current sensing part through an internal self-contained integrator. Wherein the integrator circuit comprises resistors R1, R2 and R3, and a capacitor C. The Rogowski coil transmits the voltage signal processed by the integrator to the acquisition terminal through the secondary shielding cable, and the acquisition terminal further processes the voltage signal so as to measure the current on the overhead conductor.
Referring to fig. 4, the resistance-capacitance voltage divider includes a high voltage collecting terminal and a collecting terminal; the high-voltage acquisition end is provided with a copper insert and is in direct contact with the overhead conductor through the copper insert; the acquisition terminal is connected with the secondary shielding cable. The resistance-capacitance voltage divider applies the acquired high voltage value on the overhead line to the resistance-capacitance voltage dividing circuit shown in fig. 4, the high voltage on the line is applied to the high-voltage resistor R4, the high-voltage capacitor C1, the low-voltage resistor R5 and the low-voltage capacitor C2, the high-voltage resistor value and the low-voltage resistor value are divided according to the magnitude of the resistor values in a proportional manner, the high-voltage resistor value and the low-voltage resistor value are reasonably selected, and the appropriate low voltage value can be acquired for measuring the original voltage and is transmitted to the acquisition terminal through the secondary shielded cable for further processing. And the measurement accuracy of the resistance-capacitance voltage divider can reach 0.2S level, and the linearity is good.
As shown in fig. 2, a novel intelligent insulator device for a 10kV line includes 3 novel intelligent insulators for a 10kV line as described above, and an installation base plate; 3 intelligent insulators are fixed on the upper side of the mounting bottom plate. The three intelligent insulators are respectively used on a 10kV high-voltage three-phase line. Wherein, the insulator shell adopts the support insulator appearance, adopts epoxy to pour, has good electric insulation performance, and the design has 4 discoid insulator structures to increase creepage distance, prevent that the insulator from being punctured by high-pressure flashover. The Rogowski coil and the resistance-capacitance voltage divider are fixed inside the insulator in a pouring mode. When current passes through the line, the Rogowski coil in the insulator generates corresponding induced voltage, and the measured alternating current can be restored after the induced voltage signal is amplified and integrated by the integrator; through the resistance-capacitance voltage divider of copper insert and overhead bare conductor direct contact, the high voltage value on the overhead line who will gather passes through resistance partial pressure ratio and converts the little voltage value into, carries the collection terminal, can measure the alternating voltage who measures.
To sum up, compare in prior art, the utility model has the advantages of it is following:
(1) the utility model discloses in the shell of insulator, be provided with rogowski coil and resistance-capacitance voltage divider to connect rogowski coil, resistance-capacitance voltage divider and secondary shielded cable order. The insulator can realize current monitoring on the overhead conductor by using the Rogowski coil while supporting the cable and insulating high voltage, and simultaneously, the voltage monitoring is carried out on the overhead conductor by using the resistance-capacitance voltage divider, so that the intelligent insulator has the current and voltage monitoring function of the traditional combined transformer.
(2) The utility model discloses a rogowski coil do not contain the iron core, make flexible coil evenly twine on non-ferromagnetic material to alleviateed the weight of current monitoring part, avoided the production of ferromagnetic resonance overvoltage moreover, promoted the ease for use and the security of product.
(3) Because the utility model discloses combine the function of combination mutual-inductor and traditional support insulator as an organic whole, simple to operate, maintenance are simple, the effectual kind of simplifying line equipment, it is small to compare original technique, light in weight.
(4) The utility model discloses a resistance-capacitance voltage divider carries out voltage monitoring, and the precision can reach 0.2S level, has the characteristics of high accuracy and high reliability.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (8)
1. A novel intelligent insulator for a 10kV line is characterized by comprising a shell, a fixing bolt, a Rogowski coil, a resistance-capacitance voltage divider and a secondary shielding cable; the Rogowski coil, the resistance-capacitance voltage divider and the secondary shielding cable are sequentially connected.
2. The novel intelligent insulator for the 10kV line is characterized in that two fixing bolts are arranged at the top of the shell.
3. The novel intelligent insulator for 10kV lines as claimed in claim 1, wherein two opposite wire holes are further formed in the middle of the top of the housing.
4. The novel intelligent insulator for the 10kV line as claimed in claim 3, wherein the Rogowski coil is an air coil, the hollow part of the Rogowski coil is concentric with the wire hole, and the overhead wire passes through the hollow part of the Rogowski coil.
5. The novel intelligent insulator for 10kV lines as claimed in claim 1, wherein the Rogowski coil comprises a coil and an integrator, and the coil is uniformly wound on a non-ferromagnetic substance.
6. The novel intelligent insulator for 10kV lines as claimed in claim 1, wherein the housing is in the shape of a support insulator, and 4 disk-shaped insulators are arranged in the middle.
7. The novel intelligent insulator for the 10kV line according to claim 1, wherein the resistance-capacitance voltage divider comprises a high-voltage acquisition end and an acquisition terminal; the high-voltage acquisition end is provided with a copper insert and is in direct contact with the overhead conductor through the copper insert; the acquisition terminal is connected with the secondary shielding cable.
8. A novel intelligent insulator device for 10kV lines, which is characterized by comprising 3 novel intelligent insulators for 10kV lines according to any one of claims 1 to 7, and a mounting baseplate; 3 intelligent insulators are fixed on the upper side of the mounting bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922371092.5U CN211265136U (en) | 2019-12-24 | 2019-12-24 | Novel intelligent insulator and device for 10kV line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922371092.5U CN211265136U (en) | 2019-12-24 | 2019-12-24 | Novel intelligent insulator and device for 10kV line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211265136U true CN211265136U (en) | 2020-08-14 |
Family
ID=71953952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922371092.5U Active CN211265136U (en) | 2019-12-24 | 2019-12-24 | Novel intelligent insulator and device for 10kV line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211265136U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509592A (en) * | 2022-04-20 | 2022-05-17 | 山东泰开互感器有限公司 | Capacitor voltage transformer with electric energy quality monitoring function |
-
2019
- 2019-12-24 CN CN201922371092.5U patent/CN211265136U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509592A (en) * | 2022-04-20 | 2022-05-17 | 山东泰开互感器有限公司 | Capacitor voltage transformer with electric energy quality monitoring function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203406161U (en) | Hollow coil with closed magnetic circuit and resistance voltage divider combined electronic instrument transformer | |
| CN106526288A (en) | Transmission line voltage and current monitoring system and method | |
| CN104851581B (en) | A kind of high accuracy number amount output electronic current mutual inductor | |
| CN202258772U (en) | Electronic combined mutual inductor for epoxy casting totally-enclosed strut type centrally-mounted switchgear | |
| CN110320395A (en) | On-line monitoring high-precision capacitance-resistance parallel voltage divider | |
| CN204011033U (en) | A kind of novel electronic type zero sequential potential transformer | |
| CN211265136U (en) | Novel intelligent insulator and device for 10kV line | |
| CN102628887A (en) | High-voltage electrode discharging current sensor | |
| CN206945795U (en) | A kind of transmission line of electricity voltage x current monitoring system | |
| CN219800651U (en) | Current transformer | |
| CN210775664U (en) | Metering device for line loss | |
| CN212622909U (en) | Power frequency withstand voltage test device | |
| CN201663050U (en) | Electronic combined transformer | |
| CN113092844A (en) | Voltage and current integrated sensing device and clamping sleeve | |
| CN203406160U (en) | Combined instrument transformer provided with closed magnetic circuit type hollow coil | |
| CN209513902U (en) | A kind of digital zero sequence current mutual inductor of on-pole switch | |
| CN103605001B (en) | A kind of electriferous state electric current secondary loop test coupling device | |
| Qing et al. | An innovative combined electronic instrument transformer applied in high voltage lines | |
| CN105826000B (en) | A kind of intelligence gas-filling cabinet punching electronic current mutual inductor | |
| CN206618792U (en) | A kind of multi-function electronic current-voltage transformer | |
| CN211455518U (en) | Two-stage multi-transformation-ratio standard voltage transformer | |
| CN105024371B (en) | A kind of four-in-one intelligent sampling electric discharge device | |
| CN201549360U (en) | Electronic high-voltage AC transformer | |
| Sandler et al. | Measurement Systems for High Voltage Transients in Power Networks | |
| CN106098348A (en) | Electronic current and voltage transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |