CN111293675A - Fusion type power transmission line fault isolation device - Google Patents
Fusion type power transmission line fault isolation device Download PDFInfo
- Publication number
- CN111293675A CN111293675A CN201911409642.6A CN201911409642A CN111293675A CN 111293675 A CN111293675 A CN 111293675A CN 201911409642 A CN201911409642 A CN 201911409642A CN 111293675 A CN111293675 A CN 111293675A
- Authority
- CN
- China
- Prior art keywords
- sensor
- circuit breaker
- vacuum circuit
- voltage
- transmission line
- 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
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
Abstract
The invention discloses a fusion type power transmission line fault isolation device which comprises three vacuum circuit breakers, YDJ type controllers and electrical sensors, wherein the three vacuum circuit breakers are arranged on a shell, the electrical sensors comprise an electronic voltage sensor, an electronic current sensor and a capacitive energy-taking sensor, the three sensors are fused into a circuit breaker body, the capacitive energy-taking sensor is arranged on an energy-taking unit, the vacuum circuit breakers, the electronic voltage sensor, the electronic current sensor, the capacitive energy-taking sensor and the energy-taking unit are connected with the YDJ type controllers through aviation plugs and cables, and the two energy-taking units are arranged at intervals with the three vacuum circuit breakers; according to the invention, the sensor and the power taking device are integrated on the vacuum circuit breaker, so that the integrated operation of the vacuum circuit breaker is realized, the problems of interface, expansibility, complex installation and debugging, responsibility division and the like are avoided, and the overall reliability of the equipment is improved.
Description
The technical field is as follows:
the invention relates to the field of power transmission and transformation, in particular to a fusion type power transmission line fault isolation device.
Background art:
the construction and the transformation of the power distribution network are important links of intelligent power grids and energy transformation, and are key fields of national economic construction and energy Internet development at present and in a period from now on. The primary and secondary integration is a necessary way for the technical progress of the power distribution equipment, is an effective means for improving the level of the power distribution equipment, and is an important symbol for achieving the achievement of the construction of the intelligent power distribution network in China.
The development of the intelligent power grid needs to upgrade primary equipment into intelligent power equipment, secondary equipment into an intelligent control unit, and informatization, intellectualization and integration are the development trend of the current power distribution system.
Current fault isolation device still adopts split type sensor to gather transmission line's information, gets the electric operation with split type voltage transformer, adopts wired mode to carry out data transmission simultaneously, has reduced the insulating degree between equipment, and the setting of components of a whole that can function independently structure increases the volume of equipment, and the quality is heavy, is not convenient for subsequent transportation, installation and maintenance.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: the integrated power transmission line fault isolation device overcomes the defects of the prior art, realizes the integrated operation of the vacuum circuit breaker by integrating the sensor and the power taking device on the vacuum circuit breaker, and avoids the problems of interface, expansibility, complex installation and debugging, responsibility division and the like.
The technical scheme of the invention is as follows: the utility model provides a fusion transmission line fault isolation device, includes vacuum circuit breaker, YDJ type controller and electric sensor, characterized by: vacuum circuit breaker is three and is connected with A, B, C three-phase line respectively to the setting is on the casing, electric sensor includes that electronic type voltage sensor, electronic type current sensor and capacitanc get can the sensor, and it is internal that its three sensor all fuses the circuit breaker, capacitanc is got can the sensor setting on getting can the unit, just vacuum circuit breaker, electronic type voltage sensor, electronic type current sensor, capacitanc are got can the sensor and are got can the unit all through aviation plug and cable with YDJ type controller connects, get can the unit be two and with three vacuum circuit breaker interval setting, it is connected with vacuum circuit breaker to get can unit one end through the transformer, the other end sets up on the casing.
Furthermore, a manual switching-on and switching-off device, a manual energy storage device, a switching-on and switching-off indicator and an aviation plug are arranged on the shell,
furthermore, a zero sequence CT and two single-phase CTs are respectively arranged outside the three vacuum circuit breakers, the electronic current sensor is manufactured by adopting an LPCT low-power coil principle, and the electronic voltage sensor is manufactured by adopting a capacitance voltage division principle and is molded by vacuum casting with epoxy resin.
Furthermore, the energy taking unit is an external PT (potential transformer) which provides power supply and voltage signals for the operation of the controller and the circuit breaker, the external PT adopts a high-voltage ceramic capacitor to combine with a transformer and a power supply control panel to realize energy taking, the high-voltage ceramic capacitor is molded by casting epoxy resin, and the transformer is integrated in the vacuum circuit breaker.
Furthermore, utilize air insulation to be provided with the temperature sensor that detects high pressure sound contact operating temperature in the vacuum circuit breaker, temperature sensor adopts electronic sensing technique and wireless communication technique to carry out high-pressure isolation and signal transmission, and wireless communication technique adopts 433HZ radio frequency communication.
Further, a medium-voltage carrier communication coupler in the vacuum circuit breaker carries out carrier communication or RFID communication through a carrier machine.
The invention has the beneficial effects that:
1. according to the invention, the sensor and the power taking device are integrated on the vacuum circuit breaker, so that the integrated operation of the vacuum circuit breaker is realized, the problems of interface, expansibility, complex installation and debugging, responsibility division and the like are avoided, the overall reliability and economy of the equipment are improved, the intelligent operation and maintenance are realized, the fault is pre-judged, the line inspection working strength is reduced, the fault is accurately positioned, the power supply is quickly recovered, the power failure is reduced, the running state monitoring and the whole life cycle management of the line equipment are realized, and the personal electric shock injury and the fire accident are reduced.
2. The electronic current sensor is manufactured by adopting an LPCT low-power coil principle, outputs a simulated small voltage signal, does not need secondary conversion, and is directly connected to secondary equipment; the high-frequency-band-pass filter has the characteristics of small volume, light weight, wide frequency band response, no saturation phenomenon, good electromagnetic interference resistance, reliable insulation and the like.
3. The electronic voltage sensor adopts a capacitance voltage division principle, epoxy resin is poured in vacuum, the output of the sensor is a standard small signal, secondary conversion is not needed, and the standard small signal can be directly input into a protection device or a metering module through A/D conversion; the protection device has the advantages of no iron core, no saturation, wide frequency range, large measurement range, good linearity, strong anti-interference capability and capability of reliably acting the protection device in a system fault state.
4. The energy taking unit adopts a high-voltage ceramic capacitor combined with a transformer and a power supply control board to take energy, and the high-voltage capacitor is molded by casting epoxy resin. The transformer is integrated in the switch, outputs 100V safe voltage and gets electricity for the secondary device.
5. The temperature sensor adopts an electronic sensing technology and a wireless communication technology to carry out high-voltage isolation and signal transmission, monitors the operating temperature of a high-voltage movable contact and a high-voltage static contact by utilizing air insulation, and realizes real-time temperature measurement of high-voltage equipment; a battery or CT power taking mode can be adopted, and the design of low power consumption is realized; the wireless 433HZ radio frequency communication technology is adopted.
6. The switch in the vacuum circuit breaker integrates the medium-voltage carrier communication coupler, can be directly connected into a carrier machine for carrier communication, and effectively ensures the safety of equipment by adopting an advanced lightning protection technology; the problem of the area which cannot be covered by 4G communication is solved.
Description of the drawings:
fig. 1 is a schematic structural diagram of a fused power transmission line fault isolation device.
Fig. 2 is a circuit diagram of an electronic current sensor.
Fig. 3 is a circuit diagram of an electronic voltage sensor.
Fig. 4 is a schematic view of an operation panel of the YDJ controller.
The specific implementation mode is as follows:
example (b): referring to fig. 1, 2, 3 and 4, in the drawings, 1-a vacuum circuit breaker, 2-an electrical sensor, 3-an energy taking unit, 4-an aviation plug, 5-a shell, 6-a manual switching-on and switching-off device, 7-a manual energy storage device and 8-a switching-on and switching-off indicator are shown.
The integrated transmission line fault isolation device comprises a vacuum circuit breaker 1, a YDJ type controller and an electric sensor 2, and the integrated operation of the vacuum circuit breaker is realized by integrating the sensor and the power taking device on the vacuum circuit breaker, so that the problems of interface, expansibility, complex installation and debugging, responsibility division and the like are solved, the overall reliability and economy of the equipment are improved, the intelligent operation and maintenance are realized, the fault is judged in advance, the line patrol working strength is reduced, the fault is accurately positioned, the power supply is quickly recovered, the power failure is reduced, the running state monitoring and the whole life cycle management of line equipment are realized, and the personal electric shock injury and the fire accident are reduced.
The present application will be described in detail below with reference to the drawings and examples.
The shell 5 is provided with a manual switching-on and switching-off device 6, a manual energy storage device 7, a switching-on and switching-off indicator 8 and an aviation plug electronic current sensor which are manufactured by adopting an LPCT low-power coil principle, and the electronic voltage sensor is manufactured by adopting a capacitance voltage division principle and is molded by vacuum casting with epoxy resin.
The three vacuum circuit breakers are externally provided with a zero sequence CT (the transformation ratio is 20/1, a primary current section of 0.1-5A keeps a linear relation, the rated load is 1 omega, the transformation ratio error under the rated load is less than 3%. the primary zero sequence current is 400A, the effective value of the secondary output current is not less than 5A. the rated short-time enduring currents are 16kA, 20kA, 25kA and 4S), and two single-phase CTs (the transformation ratio 600/5 (or the transformation ratio specified by a user), the rated load is 10 omega, the precision is 10P20, the rated short-time enduring currents are 16kA, 20kA and 4S), the electronic current sensor is manufactured by adopting an LPCT coil principle, and the electronic voltage sensor is manufactured by adopting a capacitance voltage division principle and is molded by vacuum casting with epoxy resin.
The energy taking unit is an external PT (transformation ratio is 10000V/220V, capacity is 300VA, precision is 3P grade), and provides power supply and voltage signals for operation of the controller and the circuit breaker, the external PT adopts a high-voltage ceramic capacitor to combine with a transformer and a power supply control panel to realize energy taking, the high-voltage ceramic capacitor is molded by casting epoxy resin, and the transformer is integrated in the vacuum circuit breaker. And a medium-voltage carrier communication coupler in the vacuum circuit breaker carries out carrier communication or RFID communication through a carrier machine.
RFID, radio Frequency identification, and RFID (radio Frequency identification) technology, which is a communication technology and is commonly called an electronic tag. The specific target can be identified and the related data can be read and written by radio signals without establishing mechanical or optical contact between the identification system and the specific target.
A monitoring unit of a voltage-trolley wire power grid in the YDJ controller is matched with a switch on a column to realize remote control and automatic management.
As shown in FIG. 4, ① status quantity indicating LEDs, ② manual switching on and off keys, ③ notes, ④ liquid crystal operating function keys, ⑤ Chinese liquid crystal, ⑥ control cable navigation socket, ⑦ power supply cable navigation socket, ⑧ grounding bolt and ⑨ nameplate/SIM card installation position.
The power supply of the YDJ watchdog controller is from a high-voltage transformer, the rated voltage of the power supply is AC220V and 50Hz, the controller automatically enters a working state after the power supply is connected by aviation plug, and a 2A fuse is arranged in the controller; the YDJ controller adopts a voltage stabilization charging mode, so that the voltage of the energy storage capacitor is ensured to be within DC220V +/-3V, and the charging time of the capacitor is less than or equal to 0.5 s.
The pole switch energy storage motor is powered by PT voltage and is connected to the pole switch after passing through the controller. The YDJ controller is internally provided with an energy storage capacitor, switching-on and switching-off energy comes from the capacitor, the output voltage of a switching-on and switching-off control loop is DC220V direct-current voltage in order to avoid the influence of line voltage fluctuation on switching-on and switching-off operation, and the capacitor can provide time not less than 6s to maintain the operation and reclosing once of the YDJ controller when the line voltage suddenly drops.
During the use, monitor transmission line information and high pressure sound contact operating temperature in the vacuum circuit breaker through voltage, electric current, temperature sensor to convey and carry out the analysis in the YDJ type controller, judge whether break down, and control vacuum circuit breaker and carry out the divide-shut brake operation, simultaneously, realize the biography outward of detection information through wireless communication technology.
When a branch line of a user has a single-phase earth fault, the vacuum circuit breaker is automatically opened, and other branch users on the transformer substation and the feeder line cannot feel the fault. The phase-to-phase short circuit fault is automatically isolated, when a user branch line has the phase-to-phase short circuit fault, the vacuum circuit breaker trips before the outgoing line protection switch of the transformer substation, the fault line is automatically isolated, and power failure of other branch users on the feeder line cannot be affected. The fault point is quickly positioned, when the branch line fault of a user causes the protection action of the vacuum circuit breaker, and when the branch line fault of the user causes the protection action of the vacuum circuit breaker, the user is only responsible for power failure, and the fault information is actively reported by the user, so that a power company can quickly distribute staff to go to the site for investigation; if the vacuum circuit breaker is provided with the communication module, the information is reported to the power management center. And monitoring the user load, and transmitting monitoring data to a power management center when the vacuum circuit breaker can be configured with a wired or wireless communication accessory, so as to realize remote real-time data monitoring on the user load. The remote operation function is realized, and a user can operate the brake opening of the vacuum circuit breaker through a mobile phone short message, a computer or field manual operation (a manual brake opening and closing device and a manual energy storage device).
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a fusion transmission line fault isolation device, includes vacuum circuit breaker, YDJ type controller and electric sensor, characterized by: vacuum circuit breaker is three and is connected with A, B, C three-phase line respectively to the setting is on the casing, electric sensor includes that electronic type voltage sensor, electronic type current sensor and capacitanc get can the sensor, and it is internal that its three sensor all fuses the circuit breaker, capacitanc is got can the sensor setting on getting can the unit, just vacuum circuit breaker, electronic type voltage sensor, electronic type current sensor, capacitanc are got can the sensor and are got can the unit all through aviation plug and cable with YDJ type controller connects, get can the unit be two and with three vacuum circuit breaker interval setting, it is connected with vacuum circuit breaker to get can unit one end through the transformer, the other end sets up on the casing.
2. The fused transmission line fault isolation device of claim 1, wherein: and the shell is provided with a manual switching-on and switching-off device, a manual energy storage device, a switching-on and switching-off indicating meter and an aviation plug.
3. The fused transmission line fault isolation device of claim 1, wherein: the three vacuum circuit breakers are externally provided with a zero sequence CT and two single phase CTs respectively, the electronic current sensor is manufactured by adopting an LPCT low-power coil principle, and the electronic voltage sensor is manufactured by adopting a capacitance voltage division principle and is molded by vacuum casting of epoxy resin.
4. The fused transmission line fault isolation device of claim 1, wherein: the energy taking unit is an external PT (potential transformer) which provides power supply and voltage signals for the operation of the controller and the circuit breaker, the external PT adopts a high-voltage ceramic capacitor to combine with a transformer and a power supply control panel to realize energy taking, the high-voltage ceramic capacitor is molded by casting through epoxy resin, and the transformer is integrated in the vacuum circuit breaker.
5. The fused transmission line fault isolation device of claim 1, wherein: the vacuum circuit breaker is internally provided with a temperature sensor for detecting the operating temperature of the high-voltage moving and static contacts by utilizing air insulation, the temperature sensor adopts an electronic sensing technology and a wireless communication technology to carry out high-voltage isolation and signal transmission, and the wireless communication technology adopts 433HZ radio frequency communication.
6. The fused transmission line fault isolation device of claim 1, wherein: and a medium-voltage carrier communication coupler in the vacuum circuit breaker carries out carrier communication or RFID communication through a carrier machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911409642.6A CN111293675A (en) | 2019-12-31 | 2019-12-31 | Fusion type power transmission line fault isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911409642.6A CN111293675A (en) | 2019-12-31 | 2019-12-31 | Fusion type power transmission line fault isolation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111293675A true CN111293675A (en) | 2020-06-16 |
Family
ID=71030668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911409642.6A Pending CN111293675A (en) | 2019-12-31 | 2019-12-31 | Fusion type power transmission line fault isolation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111293675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116884771A (en) * | 2023-09-05 | 2023-10-13 | 中宝电气有限公司 | Circuit breaker capacitor electricity taking assembly |
-
2019
- 2019-12-31 CN CN201911409642.6A patent/CN111293675A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116884771A (en) * | 2023-09-05 | 2023-10-13 | 中宝电气有限公司 | Circuit breaker capacitor electricity taking assembly |
| CN116884771B (en) * | 2023-09-05 | 2023-12-01 | 中宝电气有限公司 | Circuit breaker capacitor electricity taking assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201522541U (en) | Transformer substation electrical equipment on-line monitoring system | |
| CN102790429A (en) | On-line intelligent monitoring module for intelligent transformer substation GISs (gas insulated switchgear) | |
| CN103516052A (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN103457192A (en) | Intelligent medium voltage switch cabinet | |
| CN103325627A (en) | Fast and intelligent 10KV pole-mounted breaker | |
| CN201904560U (en) | Intelligent environment-friendly solid fully-insulated looped network cabinet | |
| CN216671484U (en) | 12kV degree of depth once or twice fuses circuit breaker | |
| CN105280430A (en) | 10kV solar intelligent pole-mounted vacuum circuit breaker | |
| CN111293675A (en) | Fusion type power transmission line fault isolation device | |
| CN205159193U (en) | Vacuum circuit breaker on 10kV solar energy intelligence post | |
| CN202796772U (en) | 10kV rapid intelligent column breaker | |
| CN102142675A (en) | Intelligent digital relay protection device | |
| CN211377575U (en) | Fusion type power transmission line fault isolation device | |
| CN203552926U (en) | Electronic current transformer for disconnecting circuit breaker | |
| CN108963956A (en) | A kind of Intellectualized Switchgear of high-voltage switch gear | |
| CN201270385Y (en) | Intelligent synthetic electric distribution box | |
| CN115411836A (en) | Power supply device and electric energy meter box | |
| AU2021101553A4 (en) | Integrated fault isolation apparatus for transmission line | |
| CN203562840U (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN202535161U (en) | Intelligent high-voltage distribution switch with anti-power stealing high-voltage measurement | |
| CN203191496U (en) | RS485 bus based distributed power grid operating equipment insulation online monitoring device | |
| CN208443924U (en) | A kind of pair of line loss realizes the circuit breaker system of management through quantification | |
| CN201789268U (en) | Dividing circuit breaker equipment | |
| CN206209091U (en) | A kind of Intelligent high-pressure metering device | |
| CN213402568U (en) | Novel intelligent low-voltage circuit breaker |
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 | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Zhiyin Inventor after: Zhang Xinhong Inventor after: Shen Chengkuan Inventor before: Sun Zhiyin Inventor before: Shen Chengkuan Inventor before: Liu Hui Inventor before: Zhang Xinhong |