CN203071581U - Equipotential intelligent capacitor bank - Google Patents
Equipotential intelligent capacitor bank Download PDFInfo
- Publication number
- CN203071581U CN203071581U CN 201320061153 CN201320061153U CN203071581U CN 203071581 U CN203071581 U CN 203071581U CN 201320061153 CN201320061153 CN 201320061153 CN 201320061153 U CN201320061153 U CN 201320061153U CN 203071581 U CN203071581 U CN 203071581U
- Authority
- CN
- China
- Prior art keywords
- circuit
- equipotential
- links
- intelligent
- capacitor
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model relates to an equipotential intelligent capacitor bank, comprising a plurality of intelligent capacitors in simultaneous operation, wherein each intelligent capacitor is internally provided with a main control center, a command receiving circuit, a current sampling circuit, an over-temperature power-down protection circuit, three paths of driving and switching circuits and capacitors, wherein the main control centers are respectively connected with the command receiving circuits, the current sampling circuits, the over-temperature power-down protection circuits and the three paths of driving and switching circuits, the three paths of driving and switching circuits are respectively connected with corresponding capacitors, and the intelligent capacitors are connected through respective command receiving circuits; and the driving and switching circuits comprise optical coupling isolators, rectifier diodes, resistors and synchronous switches. According to the equipotential intelligent capacitor bank, each intelligent capacitor is configured as a master or a slave according to preset, and the roles of the master and the slave are interchangeable with high flexibility, and the equipotential intelligent capacitor bank has the advantages of long service life, small size, low power consumption, fine reactive compensation, high operational reliability and convenient maintenance.
Description
Technical field
The utility model relates to electric power low-voltage distribution network technical field, relates in particular to a kind of equipotential formula intelligence capacitor group.
Background technology
The general interior Master Control Center of single intelligent capacitor that adopts of traditional reactive power compensator is as control unit; and control the intelligent capacitor that other is in simultaneously operation by this control unit; because system has only a control unit; when in case unusual or other problem appear in control unit; whole system can't be worked, and will be in paralyzed state.Even be equipped with various protective circuits in each intelligent capacitor, when control unit was ineffective, its all defencive function had also all lost original meaning.Moreover, the intelligence capacitor very easily bursts or the phenomenon of leakage when high temperature or big electric current frequent impact, even improved paraffin wax type or recover capacitor certainly in this case, capacity also can be decayed even lose efficacy rapidly, therefore, can reduce greatly the useful life of intelligence electric capacity, stayed certain potential safety hazard also for the long-time steady operation of system.
Summary of the invention
Technical problem to be solved in the utility model is at the above-mentioned problems in the prior art, provides a kind of each intelligent capacitor can again can be as the equipotential formula of slave, long service life intelligence capacitor group as main frame.
For addressing the above problem, the technical solution of the utility model is:
A kind of equipotential formula intelligence capacitor group, described equipotential formula intelligence capacitor group comprises a plurality of intelligent capacitors of operation simultaneously that are in, be provided with Master Control Center in each intelligent capacitor, be used for receiving or sending the instruction transmission circuit of each intelligent capacitor control command in service, current sampling circuit, excess temperature power down protection circuit, be used for connecting three road of triple line and drive switching circuit and capacitor, Master Control Center is the and instruction receiving circuit respectively, current sampling circuit, excess temperature power down protection circuit with drive the switching circuit and link to each other with three the road, three tunnel driving switching circuit are continuous with corresponding capacitor respectively, and each intelligent capacitor links to each other by instruction transmission circuit separately; Described driving switching circuit comprises optical coupling isolator, rectifier diode, resistance and synchro switch, first output pin of optical coupling isolator links to each other with a phase line in the triple line, the second output pin ground connection, be parallel with reverse rectifier diode on first input pin of optical coupling isolator and second input pin, first input pin of optical coupling isolator links to each other with electric capacity by resistance, be connected with synchro switch between second input pin of the junction of resistance and electric capacity and optical coupling isolator, synchro switch links to each other with Master Control Center.
The utility model is applicable to and exists in the system under the state that a plurality of intelligent capacitors move simultaneously that in other words, the utility model is that intelligent capacitor communication modes is to each other carried out networking, and adopts equipotential formula circulation communication modes.Wherein, the equipotential formula refers to that each intelligent capacitor all is in same rank in the system, when any one in all intelligent capacitors in service is main frame, then this main frame is by instructing the transmission circuit sending controling instruction in other intelligent capacitor, in case the instruction transmission circuit of any intelligent capacitor receives control command, then instruct transmission circuit that configuration signal is sent to Master Control Center, Master Control Center receives and disposes this intelligence capacitor is slave.Main frame can according to all the intelligent capacitors in the net according to capacity divide into groups, sub-sequence ordering, carry out switching cycle according to the switching situation at scene then, main frame also can carry out switching cycle according to the default operating time, avoids the long-time weariness working of certain intelligent capacitor and damages.When the instruction that main frame breaks down or slave does not receive main frame in the stipulated time, system can upgrade to main frame according to the minimum slave of address number and carry out the networking ordering again, by that analogy.
The synchro switch that adopts is to carry out operating passing zero by phase angle technique, realizes dropping into the technical indicator of the no arcing of no-flashy-flow excision.Can improve the reliability of mechanical switch like this, improve the useful life of capacitor.
Be compared to prior art, equipotential formula intelligence capacitor group of the present utility model is main frame or slave according to presetting each intelligent capacitor arrangements, simultaneously, the role of main frame and slave is interchangeable, the flexibility height, avoid causing because of the control unit fault in the prior art problem of systemic breakdown, had long service life, volume is little, low in energy consumption, reactive power compensation is meticulous, operational reliability is high and the characteristics being convenient to safeguard.
Preferably, also be provided with button display circuit and mainboard interface circuit in the described intelligent capacitor, the mainboard interface circuit is connected three the road and drives between switching circuit and the Master Control Center, and the button display circuit links to each other with the mainboard interface circuit.
Preferably, also be provided with the harmonic protection circuit in the described intelligent capacitor, and crossed the harmonic protection circuit and link to each other with Master Control Center.
Preferably, link to each other by the RS485 interface between the described instruction transmission circuit and instruction transmission circuit.
Preferably; described Master Control Center is the DSP control chip; be provided with main control unit, A/D converting unit, harmonic wave detecting unit and memory cell in the Master Control Center; main control unit links to each other with memory cell with A/D converting unit, harmonic wave detecting unit respectively, and the A/D converting unit links to each other with harmonic wave detecting unit, memory cell, current sampling circuit and excess temperature power down protection circuit respectively.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the utility model equipotential formula intelligence capacitor group.
Fig. 2 is the former block diagram of circuit of each intelligent capacitor in the utility model equipotential formula intelligence capacitor group.
Fig. 3 is the circuit theory diagrams that drive the switching circuit in the utility model equipotential formula intelligence capacitor group.
Embodiment
Further describe the utility model below in conjunction with drawings and Examples, but protection range of the present utility model is not limited to this.
With reference to Fig. 1, equipotential formula intelligence capacitor group of the present utility model comprises that N is in the intelligent capacitor of operation simultaneously, in Fig. 1, be designated No. 1 intelligent capacitor, No. 2 intelligent capacitors, No. 3 intelligent capacitors and N number intelligent capacitor respectively, interconnected each other between each intelligent capacitor, i.e. communication connection each other between each intelligent capacitor.
With reference to Fig. 2, be provided with Master Control Center, the instruction transmission circuit that is used for receiving or sending each intelligent capacitor control command in service, current sampling circuit, excess temperature power down protection circuit in each intelligent capacitor, be used for connecting three tunnel driving switching circuit, capacitor, button display circuit, the mainboard interface circuit of triple line and crossing the harmonic protection circuit.Master Control Center links to each other with mainboard interface circuit, excess temperature power down protection circuit, current sampling circuit and mistake harmonic protection circuit respectively, and the input and output and the data that are used for each road of control are handled; Mainboard interface circuit and instruction transmission circuit, three tunnel driving switching circuit respectively links to each other with the button display circuit, and mainboard interface is used for transmitting the control command that Master Control Center sends; Three the road drive the switching circuit is respectively A and drives switching circuit, B mutually and drive the switching circuit mutually and drive the switching circuit mutually with C, and every road drives on the switching circuit and all is connected with capacitor.Master Control Center is the DSP control chip; be provided with main control unit, A/D converting unit, harmonic wave detecting unit and memory cell in the Master Control Center; main control unit links to each other with memory cell with A/D converting unit, harmonic wave detecting unit respectively; the A/D converting unit links to each other with the harmonic wave protective circuit with harmonic wave detecting unit, memory cell, current sampling circuit, excess temperature power down protection circuit respectively; main control unit links to each other with the mainboard interface circuit, and the harmonic wave detecting unit is used for harmonic wave and detects and record.Each intelligent capacitor is connected with each other by instruction transmission circuit separately, links to each other by the RS485 interface between the instruction transmission circuit and instruction transmission circuit, makes each intelligent capacitor receive and dispatch control signal to each other.
With reference to Fig. 3, the driving switching circuit of each phase comprises optical coupling isolator U1, rectifier diode D1, resistance R 1, resistance R 2 and synchro switch K1.The first output pin a of optical coupling isolator U1 links to each other with the phase line in the triple line, the second output pin b ground connection, be parallel with reverse rectifier diode D1 on the first input pin e of optical coupling isolator U1 and the second input pin d, light-emitting diode among rectifier diode D1 and the optical coupling isolator U1 is reverse, the first input pin e of optical coupling isolator U1 links to each other with capacitor C by resistance R 1, is parallel with resistance R 2 on the resistance R 1.Be connected with synchro switch K1 between the second input pin d of the junction of resistance R 1 and capacitor C and optical coupling isolator U1, the control end f of synchro switch K1 all links to each other with the mainboard interface circuit with d.Just synchro switch is dropped into when the utility model can be implemented in voltage zero-cross, thereby avoided shoving; After voltage is stable, make magnetic latching relay adhesive conducting, cut out synchro switch, the major loop contact resistance of magnetic latching relay is little, and power consumption is little, does not generate heat to also producing without any harmonic wave; When cutting out, synchro switch is dropped into, magnetic latching relay cuts out, and the synchro switch Continuity signal is cancelled, and utilizes the characteristic of synchronous switch current zero-crossing switching, realizes that current over-zero automatically shuts down.Because synchro switch and magnetic latching relay energy consumption are low, speed is fast, good stability, so satisfied the utility model low energy consumption, reaction is responsive, and the product life cycle is long, and the characteristics that cost reduces at double make fail safe of the present utility model obtain improving greatly.When system's operation excess temperature occurred or cross the harmonic wave situation causing equipment fault, Master Control Center sent warning message, and control is cut off operating circuit and guaranteed that system normally moves, and makes the property safe and reliable to operation of system higher.Synchro switch carries out operating passing zero by phase angle technique, realizes dropping into the technical indicator of the no arcing of no-flashy-flow excision, can improve the reliability of mechanical switch like this, the useful life of improving capacitor.
The utility model is when work, and whether self check, detection current sampling circuit and the instruction transmission circuit of at first finishing Master Control Center be normal, if normal, power factor and the power calculation of harmonic wave detecting unit detection of grid.If power factor does not reach preset value, and mend altogether in addition electric capacity not switching then at first carry out common benefit capacitor switching, if mending electric capacity has altogether thrown, then carry out branch and mend capacitor switching, according to carrying out in proper order to the little switching of capacity greatly from capacity, at first carry out switching with the synchro switch zero crossing, drop into relay after 5 seconds.Stopping switching when arriving preset value, carry out cycle detection, carry out the inverted sequence cut-out if network load reduces, cut off the electric capacity of low capacity earlier, cut off large bulk capacitance again, also is to carry out synchro switch incision at zero point earlier to disconnect relay, the disconnection synchro switch during cut-out.
The utility model is applicable to and exists in the system under the state that a plurality of intelligent capacitors move simultaneously that in other words, the utility model is that intelligent capacitor communication modes is to each other carried out networking, and adopts equipotential formula circulation communication modes.Wherein, the equipotential formula refers to that each intelligent capacitor all is in same rank in the system, when any one in all operating intelligent capacitors is main frame, then this main frame is by instructing the transmission circuit sending controling instruction in other intelligent capacitor, in case any intelligent capacitor receives control command, then disposing this intelligence capacitor is slave.Main frame can according to all the intelligent capacitors in the net according to capacity divide into groups, sub-sequence ordering, carry out switching cycle according to the switching situation at scene then, main frame also can carry out switching cycle according to the default operating time, avoids the long-time weariness working of certain intelligent capacitor and damages.Slave does not receive the instruction of main frame in main frame breaks down the stipulated time, and system can upgrade to main frame according to the minimum slave of address number and carry out the networking ordering again, by that analogy.
In the above-mentioned explanation, all special instructions that do not add all adopt routine techniques means of the prior art.
Claims (5)
1. equipotential formula intelligence capacitor group, it is characterized in that, described equipotential formula intelligence capacitor group comprises a plurality of intelligent capacitors of operation simultaneously that are in, be provided with Master Control Center in each intelligent capacitor, be used for receiving or sending the instruction transmission circuit of each intelligent capacitor control command in service, current sampling circuit, excess temperature power down protection circuit, be used for connecting three road of triple line and drive switching circuit and capacitor, Master Control Center is the and instruction receiving circuit respectively, current sampling circuit, excess temperature power down protection circuit and three road drives the switching circuit and links to each other, three tunnel driving switching circuit are continuous with corresponding capacitor respectively, and each intelligent capacitor links to each other by instruction transmission circuit separately;
Described driving switching circuit comprises optical coupling isolator, rectifier diode, resistance and synchro switch, first output pin of optical coupling isolator links to each other with a phase line in the triple line, the second output pin ground connection, be parallel with reverse rectifier diode on first input pin of optical coupling isolator and second input pin, first input pin of optical coupling isolator links to each other with electric capacity by resistance, be connected with synchro switch between second input pin of the junction of resistance and electric capacity and optical coupling isolator, synchro switch links to each other with Master Control Center.
2. equipotential formula according to claim 1 intelligence capacitor group, it is characterized in that, also be provided with button display circuit and mainboard interface circuit in the described intelligent capacitor, the mainboard interface circuit is connected three the road and drives between switching circuit and the Master Control Center, and the button display circuit links to each other with the mainboard interface circuit.
3. equipotential formula intelligence capacitor group according to claim 1 is characterized in that, also is provided with the harmonic protection circuit in the described intelligent capacitor, crosses the harmonic protection circuit and links to each other with Master Control Center.
4. equipotential formula intelligence capacitor group according to claim 1 is characterized in that, links to each other by the RS485 interface between the described instruction transmission circuit and instruction transmission circuit.
5. equipotential formula according to claim 1 intelligence capacitor group; it is characterized in that; described Master Control Center is the DSP control chip; be provided with main control unit, A/D converting unit, harmonic wave detecting unit and memory cell in the Master Control Center; main control unit links to each other with memory cell with A/D converting unit, harmonic wave detecting unit respectively, and the A/D converting unit links to each other with harmonic wave detecting unit, memory cell, current sampling circuit and excess temperature power down protection circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320061153 CN203071581U (en) | 2013-01-30 | 2013-01-30 | Equipotential intelligent capacitor bank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320061153 CN203071581U (en) | 2013-01-30 | 2013-01-30 | Equipotential intelligent capacitor bank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071581U true CN203071581U (en) | 2013-07-17 |
Family
ID=48770331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320061153 Expired - Fee Related CN203071581U (en) | 2013-01-30 | 2013-01-30 | Equipotential intelligent capacitor bank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203071581U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441509A (en) * | 2013-08-01 | 2013-12-11 | 上海华艾软件有限公司 | Reactive power compensation cabinet and control method |
| CN103683494A (en) * | 2013-11-21 | 2014-03-26 | 山西省电力公司朔州供电分公司 | Power grid regulation and control integrated system based on DMIS |
| CN106849105A (en) * | 2017-03-13 | 2017-06-13 | 南阳金冠智能开关有限公司 | Low-voltage distributing line intelligent regulating device |
| CN107395184A (en) * | 2017-08-28 | 2017-11-24 | 武汉华海通用电气有限公司 | One kind monitors integrated diode array driving power soft switch circuit |
-
2013
- 2013-01-30 CN CN 201320061153 patent/CN203071581U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441509A (en) * | 2013-08-01 | 2013-12-11 | 上海华艾软件有限公司 | Reactive power compensation cabinet and control method |
| CN103683494A (en) * | 2013-11-21 | 2014-03-26 | 山西省电力公司朔州供电分公司 | Power grid regulation and control integrated system based on DMIS |
| CN103683494B (en) * | 2013-11-21 | 2016-01-06 | 山西省电力公司朔州供电分公司 | Based on the power grid regulation integral system of DMIS |
| CN106849105A (en) * | 2017-03-13 | 2017-06-13 | 南阳金冠智能开关有限公司 | Low-voltage distributing line intelligent regulating device |
| CN107395184A (en) * | 2017-08-28 | 2017-11-24 | 武汉华海通用电气有限公司 | One kind monitors integrated diode array driving power soft switch circuit |
| CN107395184B (en) * | 2017-08-28 | 2023-10-27 | 武汉华海通用电气有限公司 | Monitoring integrated diode array driving power soft switching circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103178486A (en) | Direct-current breaker and cutoff method thereof | |
| CN203071581U (en) | Equipotential intelligent capacitor bank | |
| CN202798112U (en) | Full-isolating AC/DC hybrid input switching device | |
| CN205123396U (en) | Direct current dual supply automatic switching control equipment of transformer substation | |
| CN104753044A (en) | Topological structure of hybrid all-solid state high-voltage DC breaker | |
| CN103066684A (en) | High voltage direct current power supply system | |
| CN201146397Y (en) | Intelligent rapid emergency power supply system | |
| CN203166459U (en) | DC circuit breaker | |
| CN202363966U (en) | Automatic switching device for emergency power supply | |
| CN104158152A (en) | Motor driver protection circuit and motor driver protection method | |
| CN103248015B (en) | Rapid short-circuit protection system for direct current bus of energy storage converter | |
| CN105703383A (en) | Power control system and working method thereof | |
| CN204068280U (en) | The commutation device of three-phase load autobalance | |
| CN204012667U (en) | A kind of motor driver protection circuit | |
| CN204465137U (en) | The uninterruption power source device that a kind of civil power generating switches | |
| CN203166469U (en) | Phase sequence protective relay | |
| CN202840676U (en) | Low-voltage double-power-supply automatic switching device | |
| CN103326378A (en) | Compound switch of stable self-grounded discharge capacitor | |
| CN203774154U (en) | Anti-tripping loop of high-voltage circuit breaker | |
| CN103077861B (en) | Switching device trip coil protector | |
| CN103887872A (en) | UPS device | |
| CN203368040U (en) | Stable-state automatic-grounded discharge capacitor combination switch | |
| CN202997952U (en) | Power supply module of power distribution terminal | |
| CN202997690U (en) | UPS device | |
| CN203133502U (en) | Low-voltage current-limiting control simulation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311121 No. 16 Longtan Road, front street, Yuhang District, Zhejiang, Hangzhou Patentee after: Hangzhou Cheng Cheng Power Polytron Technologies Inc Address before: 311121 No. 16 Longtan Road, front street, Yuhang District, Zhejiang, Hangzhou Patentee before: Hangzhou Decheng Electric Power Technology Co.,Ltd. |
|
| 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: 20130717 Termination date: 20190130 |