CN204407909U - Low-voltage reactive power automatic compensation device - Google Patents
Low-voltage reactive power automatic compensation device Download PDFInfo
- Publication number
- CN204407909U CN204407909U CN201520148596.XU CN201520148596U CN204407909U CN 204407909 U CN204407909 U CN 204407909U CN 201520148596 U CN201520148596 U CN 201520148596U CN 204407909 U CN204407909 U CN 204407909U
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- Prior art keywords
- drain pan
- reactive power
- compensation device
- low
- automatic compensation
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model relates to a kind of low-voltage reactive power automatic compensation device; comprise Stainless Steel Shell; Stainless Steel Shell is made up of case and drain pan; the surrounding of case is provided with installing hole, and centre is provided with LCDs, and drain pan is fluted body; the bottom of drain pan is provided with filtering capacitor; the top of drain pan is provided with controller, adjacently with controller is provided with protection switch, and the opposite side near protection switch is provided with indicator light.This new structure is simple, reasonable in design, volume is little, lightweight, remote controlled building-out capacitor grouping switching, managed concentratedly by main station system, improve regulation effect, have and prevent idle saltus step, frequent switching during large stating with load, miscarrying cutter has overvoltage, fault, exception, hardware, software blocking function.
Description
Technical field
The utility model includes low-voltage reactive power automatic compensation device, belongs to technical field of power systems.
Background technology
In recent years, along with state revenue and expenditure is to the increasing gradually of rural area investment, and household electrical appliances go to the countryside and other various rich peasants, Huinong's policy appearance in succession, farmers' income constantly increases, and rural area looks there occurs huge change; The high-power electric appliance equipment such as air-conditioning, refrigerator, microwave oven, electromagnetic oven enter people to huge numbers of families, are widely applied among producing and living.Although these high-power electric appliances are very easy to the life of people, rural residence population but presents the gesture continuing to increase substantially to the demand of electric power, causes power load to increase fast, brings some problems thus to the normal use of rural power grids.Make a general survey of the present situation of Rural Areas at Present electrical network, the lower and problem of instability of the voltage of rural power grids line end has become the most important thing of these problems, thus in the urgent need to being solved.
For rural power grids overhead transmission line, its unit impedance is roughly equal, and when power factor brings up to 0.9 from 0.8, its voltage drop is by minimizing about 15%; Power factor brings up to 0.95 from 0.8, and its voltage drop is by minimizing about 25%.Cause the reason of rural power grids low-voltage, mainly contain three aspects: one is the meritorious deficiency because load growth causes, need increase power supply point or carry out increase-volume to transformer; Two is that the voltage caused because supply line is long reduces, and needing increases power supply point or increase thick line footpath; Three is the undertensions caused because reactive load power supply is not enough, needs to increase reactive power compensator.At rural power grids, there is general threephase load unbalanced phenomena, traditional reactive power compensator, differentiation compensation cannot be carried out to each mutually idle, meanwhile, the equipment installed at rural power grids should be taken into account the feature that rural power grids electric pole buried depth is shallow, bar footpath is thin, and device should accomplish light-weight design, can install by anchor ear on rural power grids line bar, not take farmland.
Utility model content
The purpose of this utility model is: for the defect of prior art, propose a kind of low-voltage reactive power automatic compensation device, this apparatus structure is simple, reasonable in design, volume is little, lightweight, and remote controlled building-out capacitor grouping switching, is managed concentratedly by main station system, improve regulation effect, have and prevent idle saltus step, frequent switching during large stating with load, miscarrying cutter has overvoltage, fault, exception, hardware, software blocking function.
The technical scheme that the utility model adopts is: a kind of low-voltage reactive power automatic compensation device; comprise Stainless Steel Shell; Stainless Steel Shell is made up of case and drain pan; the surrounding of case is provided with installing hole, and centre is provided with LCDs, and drain pan is fluted body; the bottom of drain pan is provided with filtering capacitor; the top of drain pan is provided with controller, adjacently with controller is provided with protection switch, and the opposite side near protection switch is provided with indicator light.
In the utility model: described drain pan is provided with communicator between protection switch and filtering capacitor, the both sides of communicator are respectively equipped with fling-cut switch.
In the utility model: the side of described drain pan is provided with wiring window, wiring window is used for external electrified wire, the top at the drain pan back side is provided with fixing hoop, the bottom at the drain pan back side is provided with lower fixing hoop, upper fixing hoop and lower fixing hoop are mutually corresponding and in " L " type, drain pan is fixed on rural power grids line bar waiting by upper fixing hoop and lower fixing hoop.
After adopting technique scheme, the beneficial effects of the utility model are:
1. the utility model structure is simple, reasonable in design, volume is little, lightweight, remote controlled building-out capacitor grouping switching, managed concentratedly by main station system, improve regulation effect, have and prevent idle saltus step, frequent switching during large stating with load, miscarrying cutter has overvoltage, fault, exception, hardware, software blocking function;
2. reach the compensation ability of 4-5 groupings, can become more meticulous and regulate idle output;
3. noncontacting switch, voltage zero-cross switching, without harmonic wave, no-flashy-flow, arranges conveniently;
4. can long-distance monitorng device running status, capacitor switching group number, O&M is simple;
5. powerful running protection function, self-inspection involution, overvoltage and under-voltage protection, time delay overcurrent protection, power on, power-off protection function.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the casing structure schematic diagram in the utility model;
Fig. 3 is end view of the present utility model;
Fig. 4 is the bottom case structure schematic diagram in the utility model;
Fig. 5 is systematic schematic diagram of the present utility model.
In figure: 1. Stainless Steel Shell; 2. case; 3. drain pan; 4. wiring window; 5. installing hole; 6. go up fixing hoop; 7. LCDs; 8. descend fixing hoop; 9. controller; 10. protection switch; 11. indicator lights; 12. fling-cut switches; 13. communicators; 14. filtering capacitors.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
From Fig. 1 ~ 4; a kind of low-voltage reactive power automatic compensation device; comprise Stainless Steel Shell 1, Stainless Steel Shell 1 is made up of case 2 and drain pan 3, and the surrounding of case 2 is provided with installing hole 5; centre is provided with LCDs 7; drain pan 3 is in fluted body, and the bottom of drain pan 3 is provided with filtering capacitor 14, and the top of drain pan 3 is provided with controller 9; adjacently with controller 9 be provided with protection switch 10, the opposite side near protection switch 10 is provided with indicator light 11.Described drain pan 3 is provided with communicator 13 between protection switch 10 and filtering capacitor 14, and the both sides of communicator 13 are respectively equipped with fling-cut switch 12; The side of described drain pan 3 is provided with wiring window 4, wiring window is used for external electrified wire, the top at drain pan 3 back side is provided with fixing hoop 6, the bottom at drain pan 3 back side is provided with lower fixing hoop 8, upper fixing hoop 6 and lower fixing hoop 8 are mutually corresponding and in " L " type, drain pan 3 is fixed on rural power grids line bar waiting by upper fixing hoop 6 and lower fixing hoop 8.
As shown in Figure 5, calculate the command signal of offset current through instruction current computing circuit, this signal amplifies through offset current circuit for generating, draws offset current, the unsymmetrical current that will compensate in offset current and load current is offset, and finally obtains the source current expected.
This device has following function:
A. protection of transfiniting is exported: when harmonic load capacity exceeds low-voltage reactive power automatic compensation device compensation ability; low-voltage reactive power automatic compensation device is pressed maximum capacity and is exported (namely current limliting exports), there will not be the situation causing low-voltage reactive power automatic compensation device circuit to burn because load capacity is excessive;
B. over-temperature protection: when low-voltage reactive power automatic compensation device internal power semiconductor portion temperature is more than 85 ± 2oC, low-voltage reactive power automatic compensation device cuts off major loop automatically, supervisory control system prompting overheating fault;
C. DC bus overvoltage protection: when DC bus-bar voltage is more than 830V value, low-voltage reactive power automatic compensation device cuts off major loop automatically, supervisory control system report DC bus overvoltage fault;
D. current transformer overcurrent: when low-voltage reactive power automatic compensation device output current of converter is more than IGBT rated current, fault will be quoted by driver module, low-voltage reactive power automatic compensation device cuts off major loop, supervisory control system report over current fault automatically simultaneously;
E. input voltage under-voltage protection: when low-voltage reactive power automatic compensation device input voltage is less than AC280V, low-voltage reactive power automatic compensation device can not start, supervisory control system report input undervoltage fault;
F. input voltage overvoltage protection: when low-voltage reactive power automatic compensation device input voltage is higher than AC460V, low-voltage reactive power automatic compensation device can not start, supervisory control system report input overvoltage fault;
G. input phase failure protection: when input phase failure, low-voltage reactive power automatic compensation device can not start, supervisory control system report open-phase fault.
Above embodiment of the present utility model is described, but the utility model is not limited to above description.For a person skilled in the art, any equal amendment to the technical program and substitute be all among scope of the present utility model.Therefore, not departing from the equalization conversion and amendment done under spirit and scope of the present utility model, all should be encompassed in scope of the present utility model.
Claims (3)
1. a low-voltage reactive power automatic compensation device; it is characterized in that: comprise Stainless Steel Shell; Stainless Steel Shell is made up of case and drain pan; the surrounding of case is provided with installing hole, and centre is provided with LCDs, and drain pan is fluted body; the bottom of drain pan is provided with filtering capacitor; the top of drain pan is provided with controller, adjacently with controller is provided with protection switch, and the opposite side near protection switch is provided with indicator light.
2. low-voltage reactive power automatic compensation device according to claim 1, is characterized in that: described drain pan is provided with communicator between protection switch and filtering capacitor, and the both sides of communicator are respectively equipped with fling-cut switch.
3. low-voltage reactive power automatic compensation device according to claim 1, it is characterized in that: the side of described drain pan is provided with wiring window, wiring window is used for external electrified wire, the top at the drain pan back side is provided with fixing hoop, the bottom at the drain pan back side is provided with lower fixing hoop, upper fixing hoop and lower fixing hoop are mutually corresponding and in " L " type, drain pan is fixed on rural power grids line bar waiting by upper fixing hoop and lower fixing hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520148596.XU CN204407909U (en) | 2015-03-17 | 2015-03-17 | Low-voltage reactive power automatic compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520148596.XU CN204407909U (en) | 2015-03-17 | 2015-03-17 | Low-voltage reactive power automatic compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204407909U true CN204407909U (en) | 2015-06-17 |
Family
ID=53431744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520148596.XU Expired - Fee Related CN204407909U (en) | 2015-03-17 | 2015-03-17 | Low-voltage reactive power automatic compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204407909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169762A (en) * | 2016-07-18 | 2016-11-30 | 安徽得润电气技术有限公司 | A kind of low-voltage reactive power automatic compensation device under multiloop the control of reactive power compensating |
-
2015
- 2015-03-17 CN CN201520148596.XU patent/CN204407909U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169762A (en) * | 2016-07-18 | 2016-11-30 | 安徽得润电气技术有限公司 | A kind of low-voltage reactive power automatic compensation device under multiloop the control of reactive power compensating |
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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 |
Granted publication date: 20150617 Termination date: 20210317 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |