CN102868147B - Voltage-sharing detection protector for serially connected capacitors - Google Patents
Voltage-sharing detection protector for serially connected capacitors Download PDFInfo
- Publication number
- CN102868147B CN102868147B CN201210358109.3A CN201210358109A CN102868147B CN 102868147 B CN102868147 B CN 102868147B CN 201210358109 A CN201210358109 A CN 201210358109A CN 102868147 B CN102868147 B CN 102868147B
- Authority
- CN
- China
- Prior art keywords
- capacitor
- optocoupler
- electric capacity
- relay
- input
- 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
Abstract
The invention relates to a voltage-sharing detection protector for serially connected capacitors. According to the invention, each capacitance detection unit comprises two groups of circuits, and each circuit comprises a capacitor, a resistor and optocouplers. In each circuit, one end of the capacitor is connected with the middle point of the serially connected capacitors, the other end of the capacitor is connected with one end of the resistor, and the other end of the resistor is respectively connected with an input end of the first optocoupler and an input end of the second optocoupler; the optocouplers of the two groups of circuits in the capacitance detection unit output in parallel in the same direction to a capacitor protecting board. A capacitor protecting unit comprises a 24V relay and a normally-closed button; an input end of the 24V relay is used as an input end of the capacitor protecting unit, and an output end of the 24V relay is externally connected with the protector; and the input end of the 24V relay is further connected with the normally-closed button. The voltage-sharing detection protector is simple in structure and convenient to install. A light emitting diode in a capacitor detecting board is electrically connected to lighten, so that a damaged capacitor can be conveniently identified and maintained. Machine halt can be timely performed for protection, so that the capacitor can be prevented from further being damaged, and cost and harm brought by damage of the capacitor can be reduced.
Description
Technical field
The detection resist technology field that the invention belongs to capacitor, is specifically related to a kind of capacitor's series and all presses detection protective device.
Background technology
Capacitor working method, the form of employing multiple unit capacitor parallel connection, every group has two capacitor's seriess.When capacitor work, when certain capacitor is damaged, if protection shuts down or make the capacitor group of damaging to depart from time main circuit power supply not in time; not damaging electric capacity will damage because of overload; and cause power supply buses short circuit, and expand the extent of damage of equipment, strengthen cost and harmfulness.
Summary of the invention
The object of the invention is to prevent the further damage of capacitor, protection is in time shut down, and reduces cost and capacitor and damages the harm bringing.
For reaching above-mentioned purpose, the technical solution used in the present invention is:
Capacitor's series is all pressed detection protective device, is one group for two capacitor's seriess, and the form of multiple unit capacitor parallel connection comprises multiple capacitance detection units and an electric capacity protected location composition.
Every two group capacitors are a unit, and two series capacitor mid points of every group connect capacitance detection unit; Capacitance detection unit has two groups of circuit, and every group of circuit comprises electric capacity, resistance and optocoupler.
The mid point of one termination series capacitor of electric capacity, one end of other end connecting resistance, the other end of resistance is connected with an input of the first optocoupler, another input of the second optocoupler respectively, is also serially connected with therein light-emitting diode between the capacitor on a road and electric capacity; The output in parallel in the same way of two groups of circuit optocouplers of capacitance detection unit, gives electric capacity protected location.
Electric capacity protection unit comprises 24V relay and normally closed button; The input of 24V relay is protected the input of unit as electric capacity, the external protective device of its output, and described protective device is for cutting out equipment to be protected; On the input of 24V relay, be also connected to normally closed button.
The present invention compared with prior art has the following advantages: as long as every group capacitor has a capacitor to damage; capacitance detection unit testing circuit will produce Voltage unbalance; in the time that circuital current reaches the On current of optocoupler; Light-Emitting Diode is lighted; optocoupler conducting output; give electric capacity baffle, baffle work isolation output protection signal, equipment protection is shut down.Capacitor's series voltage equalizing protection technical pattern is simple, easy for installation.Light-emitting diode conducting in capacitance detection plate is shinny, is convenient to identify which group capacitor and damages, easy to maintenance.Protection is in time shut down, and prevents the further damage of capacitor, reduces cost and capacitor and damages the harm bringing.
Brief description of the drawings
Fig. 1 is circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, capacitor's series disclosed by the invention is all pressed detection protective device, and for two capacitors, 1 series connection is one group, the form of multiple unit capacitor parallel connection.Every two group capacitors are a unit 12, and two series capacitor 1 mid points of every group connect capacitance detection plate 3, other two termination power supply buses 2.Capacitance detection plate 3 has two groups of circuit, be composed in series by current-limiting impedance (in figure for electric capacity 4 and resistance 5) and optocoupler 6 respectively, wherein be also connected in series on the way light-emitting diode 7.3 liang of group circuit optocouplers 6 of capacitance detection plate, for output in parallel in the same way, are given electric capacity baffle 8.Electric capacity baffle 8 is made up of diode 9,24V relay 10 and button 11.Optocoupler 6 conductings, the 24V relay 10 of electric capacity baffle 8 obtains electric work and forms self-locking, isolates output protection signal simultaneously, and equipment protection is shut down.Handle well and damage after capacitor, press baffle button 11, de-preservation, equipment can normal boot-strap operation.
When capacitor work; when there being a capacitor to damage; capacitance detection plate testing circuit produces Voltage unbalance, and when circuital current reaches the On current of optocoupler, light-emitting diode is lighted; optocoupler conducting output; give electric capacity baffle, electric capacity baffle work, relay obtains electric and forms self-locking; isolate output protection signal, equipment protection is shut down simultaneously.Light-emitting diode conducting in capacitance detection plate is shinny, is convenient to identify which group capacitor and damages, easy to maintenance.Handle well and damage after capacitor, press baffle button, de-preservation, equipment can normal boot-strap operation.
Claims (1)
1. capacitor's series is all pressed detection protective device, is one group for two capacitor's seriess, and the form of multiple unit capacitor parallel connection comprises multiple capacitance detection units and an electric capacity protected location composition, it is characterized in that:
Every two group capacitors are a unit (12), and two series capacitors (1) mid point of every group connects capacitance detection unit (3); Capacitance detection unit (3) has two groups of circuit, and every group of circuit comprises electric capacity (4), resistance (5) and optocoupler (6);
The mid point of one termination series capacitor (1) of electric capacity (4), one end of other end connecting resistance (5), the other end of resistance (5) is connected with an input of the first optocoupler (6), another input of the second optocoupler respectively, is also serially connected with light-emitting diode (7) therein between the resistance on a road (5) and optocoupler (6); (3) two groups of circuit optocouplers of capacitance detection unit (6) output in parallel in the same way, gives electric capacity protected location (8), the input reverse parallel connection of the first optocoupler and the second optocoupler;
Electric capacity protected location (8) comprises 24V relay (10) and normally closed button (11); The input of 24V relay (10) is as the input of electric capacity protected location (8), the external protective device of its output, and described protective device is for cutting out equipment to be protected; On the input of 24V relay (10), be also connected to normally closed button (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210358109.3A CN102868147B (en) | 2012-09-24 | 2012-09-24 | Voltage-sharing detection protector for serially connected capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210358109.3A CN102868147B (en) | 2012-09-24 | 2012-09-24 | Voltage-sharing detection protector for serially connected capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102868147A CN102868147A (en) | 2013-01-09 |
| CN102868147B true CN102868147B (en) | 2014-09-03 |
Family
ID=47446829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210358109.3A Active CN102868147B (en) | 2012-09-24 | 2012-09-24 | Voltage-sharing detection protector for serially connected capacitors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102868147B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159968A (en) * | 2016-07-07 | 2016-11-23 | 安徽众升电力科技有限公司 | TSC type reactive power compensator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928995A (en) * | 1955-06-28 | 1960-03-15 | Asea Ab | Protective means for series capacitors on power lines |
| CN101170254A (en) * | 2007-09-21 | 2008-04-30 | 四川电力试验研究院 | Unbalanced protection method and device for high-voltage serial connection compensation capacitor group |
| CN201796095U (en) * | 2010-09-09 | 2011-04-13 | 苏州工业园区海沃科技有限公司 | Capacitor bank fault tester |
| CN202797904U (en) * | 2012-09-24 | 2013-03-13 | 杭州四达电炉成套设备有限公司 | Capacitor series voltage-sharing detection protecting device |
-
2012
- 2012-09-24 CN CN201210358109.3A patent/CN102868147B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928995A (en) * | 1955-06-28 | 1960-03-15 | Asea Ab | Protective means for series capacitors on power lines |
| CN101170254A (en) * | 2007-09-21 | 2008-04-30 | 四川电力试验研究院 | Unbalanced protection method and device for high-voltage serial connection compensation capacitor group |
| CN201796095U (en) * | 2010-09-09 | 2011-04-13 | 苏州工业园区海沃科技有限公司 | Capacitor bank fault tester |
| CN202797904U (en) * | 2012-09-24 | 2013-03-13 | 杭州四达电炉成套设备有限公司 | Capacitor series voltage-sharing detection protecting device |
Non-Patent Citations (4)
| Title |
|---|
| 大型串联电容器组在特高压固定串补中的应用;田秋松等;《电力电容器与无功补偿》;20120630;第33-39页 * |
| 浅析串联补偿电容装置不平衡电流的测试;王云等;《高压电器》;20091231;第87-90页 * |
| 王云等.浅析串联补偿电容装置不平衡电流的测试.《高压电器》.2009, |
| 田秋松等.大型串联电容器组在特高压固定串补中的应用.《电力电容器与无功补偿》.2012, |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102868147A (en) | 2013-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101114769A (en) | Electric equipment protecting means | |
| CN105633905A (en) | Overvoltage and under-voltage protection circuit | |
| CN104332948A (en) | Arc fault protection device | |
| CN102565662A (en) | State detection device for high-potential thyristor | |
| CN102868147B (en) | Voltage-sharing detection protector for serially connected capacitors | |
| CN101982790A (en) | Analysis experimental device and analysis experimental method for protection malfunction caused by direct current (DC) grounding cause | |
| CN103366460A (en) | Circuit breaker for prepaid electric meter | |
| CN104682331A (en) | Power supply short circuit protection circuit | |
| CN202797904U (en) | Capacitor series voltage-sharing detection protecting device | |
| CN201975773U (en) | Over-voltage protection circuit of switching power-supply power-frequency filter capacitor | |
| CN202693688U (en) | Three-phase phase lack detection circuit of electric actuator | |
| CN201813160U (en) | Direct-current power distribution box | |
| CN103227630A (en) | Hot plug method and hot plug circuit suitable for heavy working current | |
| CN103163411B (en) | A kind of break-make detection method of direct-flow distribution system and testing circuit | |
| CN204464948U (en) | A kind of on-vehicle safety circuit controller | |
| CN203798921U (en) | Electric power differential transformer fault indicator | |
| CN203101568U (en) | On/off state detection circuit of direct current power distribution system | |
| CN204389601U (en) | Heterogeneous electric lack detection circuit | |
| CN204290290U (en) | A kind of motor driver circuit detected with controllable silicon | |
| CN204144900U (en) | A kind of distribution network failure boundary protective separation device | |
| CN103595033A (en) | Isolating circuit of breakdowns of mining safety barrier | |
| CN203118893U (en) | Fuse box | |
| CN203312793U (en) | Lightning protection board for optical receiver | |
| CN103245872B (en) | AC fuse condition checkout gear | |
| CN103296642A (en) | Short circuit protective circuit of direct current motor driver load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |