CN204030286U - Outdoor reactive power compensation comprehensive distribution box - Google Patents
Outdoor reactive power compensation comprehensive distribution box Download PDFInfo
- Publication number
- CN204030286U CN204030286U CN201420505923.8U CN201420505923U CN204030286U CN 204030286 U CN204030286 U CN 204030286U CN 201420505923 U CN201420505923 U CN 201420505923U CN 204030286 U CN204030286 U CN 204030286U
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- China
- Prior art keywords
- distribution box
- power
- circuit breaker
- compensation
- reactive power
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model is a kind of outdoor reactive power compensation comprehensive distribution box, comprises lightning arrester, protective circuit breaker, isolating switch, compensation condenser, Reactive Power Compensation Automatic Controller, capacitor switching combination switch, measurement detection system, monitor and display system and the outdoor rain-proof casing for installing above equipment, described lightning arrester is connected across the earth terminal of power inleting terminal and distribution box, described protective circuit breaker inlet wire termination power, outlet termination user load, described idle compensating control is according to the voltage obtained, current signal control capacitance switching combination switch carries out operating passing zero to compensation condenser, described measurement detection system, the power consumption of monitor and display system to user is gained merit, reactive measurement, to the operating voltage of distribution box, load current, power factor shows in real time, the advanced technology that this outdoor reactive power compensation comprehensive distribution box adopts, and has good rainproof function, can be arranged on by transformer easily, measure the power supply of transformer load user, distribute, protection and reactive power compensation.
Description
Technical field
The utility model relates to a kind of power supply device, particularly relates to a kind of outdoor reactive power compensation comprehensive distribution box.
Background technology
Power distribution panel is a kind of for power device; be widely used in the overall power distribution equipment of transformer high and low pressure side; the electric energy provided by transformer carries out measuring, distributing; reactive power compensation is carried out to improve the power factor of circuit to the load of user, also there is overload, short circuit and earth leakage protective comprehensive function simultaneously.The reactive power compensation of conventional electric power distribution box adopts A.C. contactor to compensate the switching of capacitor, due to very large rush of current can be produced during capacitor switching, developed into afterwards and adopt capacitor-type contactor to carry out switching, namely add when electric capacity just drops into that a bleeder resistor is to release impulse current, then drop into electric capacity and carry out reactive power compensation, but this method still can not solve the root problem of rush of current, excessive rush of current exacerbates the damage of distribution facility, shortens the useful life of electric elements.
Summary of the invention
The purpose of this utility model is the deficiency changing conventional art, adopts the brand new technical of a kind of " operating passing zero ", fundamentally solves the current impact of capacitor switching.
For achieving the above object, this outdoor reactive power compensation comprehensive distribution box comprises lightning arrester, protective circuit breaker, isolating switch, compensation condenser, idle compensating control, capacitor switching combination switch, measurement detection system, monitor and display system and the Rainproof box body for installing above equipment, it is characterized in that: described lightning arrester is connected across the earth terminal of power inleting terminal and distribution box, described protective circuit breaker inlet wire termination power, outlet termination user load, described idle compensating control obtains voltage signal from power end, from controlling described capacitor switching combination switch after load end obtains current signal, switching is carried out to described compensation condenser, described measurement detection system, monitor and display system obtains voltage from power end and load end, after current signal, the power consumption of user is gained merit, reactive measurement, to the operating voltage of distribution box, load current, power factor shows in real time.
Further setting, described protective circuit breaker comprises point protective circuit breaker of the total protective circuit breaker of power supply and more than two branch roads, and described point protective circuit breaker at least comprises the earth leakage circuit breaker of a branch road.
Further setting, described isolating switch inputs from power end, output connects compensation condenser loop, the fuse in compensation condenser loop, capacitor switching combination switch and compensation condenser are carried out band electric isolution when keeping in repair, this isolating switch can be band fuse disconnecting switch, also can be the isolating switch of other form.
Further setting, described compensation condenser comprises for the three-phase compensation capacitor of three-phase circuit conjunction benefit and the single-phase compensation condenser for single phase circuit point benefit, and the quantity of compensation condenser can be determined according to the needs of required compensation capacity.
Further setting, described Reactive Power Compensation Automatic Controller is a kind of intelligent controlling device be made up of single-chip microcomputer, according to the requirement of power factor exports control signal to capacitor switching combination switch in order to reactive-load compensation capacitor to carry out switching after carrying out dynamic sampling, analytical calculation according to the size of load circuit lagging reactive power.
Further setting, described capacitor switching combination switch is the Contactless composite switch of bidirectional triode thyristor composition, there is voltage zero-cross switching function, the rush of current produced when even eliminating capacitor switching can be greatly reduced, extend the useful life of capacitor fling-cut switch and compensation condenser and improve power supply quality, described capacitor switching combination switch comprises three phase capacitance switching combination switch and single-phase capacitance switching combination switch, mends the conjunction benefit of three-phase circuit and single-phase capacitance for three phase capacitance to dividing of single phase circuit.
Further setting, described metering system comprises high precision current transformer for electric energy metrical and active electric energy meter, reactive energy-meter, and described monitor and display system comprises current transformer for monitoring and voltage, electric current, power factor meter.
Further setting; described Rainproof box body is outdoor rain-proof formula casing; comprise with awning, leakproof door, the wire inlet-outlet with drip-preventing function and interior instrument door; this casing can be the metal cabinet with earth protective device, also can be the insulation box suppressed by organic combined insulated material.
Accompanying drawing explanation
Fig. 1 is that the utility model outdoor reactive power compensation comprehensive distribution box removes front facility installation drawing behind the door.
Fig. 2 is that the utility model outdoor reactive power compensation comprehensive distribution box removes back side facility installation drawing behind the door.
Fig. 3 is the utility model outdoor reactive power compensation comprehensive distribution box end view.
Fig. 4 is the utility model outdoor reactive power compensation comprehensive distribution box instrument door equipment scheme of installation.
Fig. 5 is the utility model outdoor reactive power compensation comprehensive distribution box electrical schematic diagram.
Embodiment
As Figure 1-5; specific embodiment of the utility model is a kind of step down side outdoor reactive power compensation comprehensive distribution box, and this outdoor reactive power compensation comprehensive distribution box comprises lightning arrester 1, total protective circuit breaker 2, point protective circuit breaker 4 and 5, isolating switch 6, compensation condenser 10 and 11, Reactive Power Compensation Automatic Controller 18, capacitor switching combination switch 8 and 9, monitor and display system, measurement detection system and the casing 15 for installing above equipment.
Further setting; described lightning arrester 1 can be YH type zinc oxide arrester; in order to protect air thunder and lightning, the overvoltage of distribution box is impacted; described protective circuit breaker comprises the total protective circuit breaker 2 of power supply and point protective circuit breaker 4 and 5; wherein 5 is earth leakage circuit breaker, in order to carry out power transmission and overload, short circuit and earth leakage protective to batch meter load.
Further setting; described isolating switch 6 is band fuse disconnecting switch; in order to transship and short-circuit protection to capacitance compensation loop during power supply, during maintenance in order to the protection fuse 7 of isolation capacitance compensation circuit, capacitor switching combination switch 8,9 and compensation condenser 10,11 in order to carrying out not hotline maintenance.
Further setting, described compensation condenser is provided with in this embodiment and closes the three-phase compensation capacitor 10 of benefit and 3 single-phase compensation condensers 11 for the single-phase loop of A, B, C point benefit for three-phase loop, this compensation condenser is used for carrying out capacitive compensation to improve the power factor of load circuit to the inductive load of circuit, reduces the reactive loss of circuit.
Further setting, described idle compensating control 18 is a kind of intelligent controlling devices be made up of single-chip microcomputer, dynamic sampling can be carried out according to the size of load circuit lagging reactive power, analytical calculation, according to the requirement output control signal of power factor, switching is carried out to capacitor switching combination switch 8 and 9 and cut-off control, in order to dynamically to drop into reactive-load compensation capacitor 10 and 11 or to disconnect, the present embodiment arranges three-phase combination and refills one, road, single-phase point refills three, road, in order to phase three-wire three current supply circuit and A, B, reactive power compensation is carried out in the load in C single phase power supply loop.
Further setting, described capacitor fling-cut switch is three-phase contactless combination switch 8 and the single-phase contactless combination switch 9 of bidirectional triode thyristor composition, it can avoid the rush of current produced compensation condenser when capacitor fling-cut switch drops under stochastic regime, there is the function of the fixed point switching when alternating voltage zero-crossing, the rush of current produced when even eliminating capacitor switching can be greatly reduced, extend the useful life of capacitor fling-cut switch and compensation condenser and improve power supply quality.
Further setting, described monitor and display system comprises current transformer 3 and Displaying Meter 17, in order to show the supply power voltage of distribution box, each phase load electric current and power factor in real time, described measurement detection system comprises active electric energy meter, the reactive energy-meter 13 of high precision current transformer 12 for electric energy metrical and metering electric energy, described measurement detection system, monitor and display system and idle compensating control 18 is arranged on the interior instrument door 21 of distribution box.
Further setting, described Rainproof box body 15 comprises with awning 16, leakproof door 14 and wire inlet-outlet 18 and the interior instrument door 21 with drip-preventing function, and casing 15 is the stainless steel casing with ground protection copper bar 20.
Claims (3)
1. an outdoor reactive power compensation comprehensive distribution box, comprise lightning arrester, protective circuit breaker, isolating switch, compensation condenser, idle compensating control, capacitor switching combination switch, measurement detection system, monitor and display system and the Rainproof box body for installing above equipment, it is characterized in that: described lightning arrester is connected across the earth terminal of power inleting terminal and distribution box, described protective circuit breaker inlet wire termination power, outlet termination user load, described idle compensating control obtains voltage signal from power end, from controlling described capacitor switching combination switch after load end obtains current signal, switching is carried out to described compensation condenser, described measurement detection system, monitor and display system obtains voltage from power end and load end, after current signal, the power consumption of user is gained merit, reactive measurement, to the operating voltage of distribution box, load current, power factor shows in real time.
2. outdoor reactive power compensation comprehensive distribution box according to claim 1; it is characterized in that: described protective circuit breaker comprises point protective circuit breaker of the total protective circuit breaker of power supply and more than two branch roads, described point protective circuit breaker at least comprises the earth leakage circuit breaker of a branch road.
3. outdoor reactive power compensation comprehensive distribution box according to claim 1, it is characterized in that: described capacitor switching combination switch is the Contactless composite switch of bidirectional triode thyristor composition, there is voltage zero-cross switching function, comprise three phase capacitance switching combination switch and single-phase capacitance switching combination switch, for three-phase capacitor, the conjunction benefit of three-phase circuit and single-phase electricity container were mended dividing of single phase circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505923.8U CN204030286U (en) | 2014-08-29 | 2014-08-29 | Outdoor reactive power compensation comprehensive distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505923.8U CN204030286U (en) | 2014-08-29 | 2014-08-29 | Outdoor reactive power compensation comprehensive distribution box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204030286U true CN204030286U (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420505923.8U Expired - Fee Related CN204030286U (en) | 2014-08-29 | 2014-08-29 | Outdoor reactive power compensation comprehensive distribution box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204030286U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552730A (en) * | 2016-02-29 | 2016-05-04 | 北京合纵实科电力科技有限公司 | Intelligent comprehensive power distribution box |
| CN111653971A (en) * | 2020-05-11 | 2020-09-11 | 西安长庆科技工程有限责任公司 | Low-voltage distribution box applicable to 10/0.4kV on-column transformer substation in oil-gas field station yard |
| CN113746100A (en) * | 2021-10-21 | 2021-12-03 | 国网湖南省电力有限公司 | Automatic switching device for standby power supply for quick power restoration and use method thereof |
| CN118137335A (en) * | 2024-05-07 | 2024-06-04 | 科畅电气有限公司 | Low-voltage distribution box |
-
2014
- 2014-08-29 CN CN201420505923.8U patent/CN204030286U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552730A (en) * | 2016-02-29 | 2016-05-04 | 北京合纵实科电力科技有限公司 | Intelligent comprehensive power distribution box |
| CN111653971A (en) * | 2020-05-11 | 2020-09-11 | 西安长庆科技工程有限责任公司 | Low-voltage distribution box applicable to 10/0.4kV on-column transformer substation in oil-gas field station yard |
| CN113746100A (en) * | 2021-10-21 | 2021-12-03 | 国网湖南省电力有限公司 | Automatic switching device for standby power supply for quick power restoration and use method thereof |
| CN118137335A (en) * | 2024-05-07 | 2024-06-04 | 科畅电气有限公司 | Low-voltage distribution box |
| CN118137335B (en) * | 2024-05-07 | 2024-07-19 | 科畅电气有限公司 | Low-voltage distribution box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20160829 |