CN101217235A - An overvoltage damping device of interstice - Google Patents
An overvoltage damping device of interstice Download PDFInfo
- Publication number
- CN101217235A CN101217235A CN 200710307529 CN200710307529A CN101217235A CN 101217235 A CN101217235 A CN 101217235A CN 200710307529 CN200710307529 CN 200710307529 CN 200710307529 A CN200710307529 A CN 200710307529A CN 101217235 A CN101217235 A CN 101217235A
- Authority
- CN
- China
- Prior art keywords
- overvoltage
- damping device
- interstice
- discharge tube
- gas discharge
- 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
Abstract
The invention relates to a clearance overvoltage damping device, including an insulation cylinder, the interior of which is fixedly provided with a non-inductance resistor and a gas discharge tube, the non-inductance resistor is connected with the gas discharge tube in series, and terminal blocks are arranged on the insulation cylinder. The overvoltage which is caused by the transition process when throwing and cutting a capacitor group can be inhibited effectively, the invention can prevent the occurrence of the accidents of a capacitor, a discharge coil, a circuit breaker and other equipments, ensures the safe power supply and has obvious damping effect for the transition process which is caused by switching-on and re-ignition, the protection capability is strong and the service life is long.
Description
Technical field
What the present invention relates to is a kind of device of technical field of power systems, specifically is a kind of overvoltage damping device of interstice based on the capacitor group.
Background technology
Electric power system at present often is connected to jumbo shunt capacitor and filtering capacitor in order to improve power supply quality and efficient in the electrical network.When connecting the large value capacitor group, easily producing overvoltage and very big shoving more than 2 times on the capacitor group, when cut-offfing the capacitor group, cause that sometimes circuit breaker restrikes, to produce 3 times or higher overvoltage and bigger shoving on the capacitor group, very easily cause equipment such as capacitor, discharge coil and circuit breaker accident to occur, cause very big economic loss, and influence safe power supply.
Summary of the invention
The objective of the invention is to solve the problems referred to above that prior art exists; a kind of overvoltage damping device of interstice is provided; the overvoltage that the transient process of capacitor group when switching caused is effectively suppressed; accident appears in the equipment such as capacitor, discharge coil and circuit breaker that prevent; guarantee safe power supply; to close a floodgate and the transient process damping that causes of restriking obvious, protective capability is strong, long service life.
The present invention is achieved in that it has an insulating cylinder, at the insulating cylinder internal fixation noninductive resistor and gas discharge tube is arranged, and connects between described noninductive resistor and the gas discharge tube, is provided with binding post on insulating cylinder.
Above-mentioned overvoltage damping device of interstice, the resistance of described noninductive resistor is elected 8～15 Ω as.
This overvoltage damping device of interstice is connected in parallel on the series reactor two ends of capacitor group, when opening-closing capacitor bank, circuit breaker is as restriking, the voltage that acts on the series reactor two ends surpasses the puncture voltage of gas discharge tube (electric clearance), gas discharge tube (electric clearance) disruptive discharge inserts the loop with the high-power noninductive resistor of the low resistance of series connection with it.Because the relation in damping device and loop is exactly to be equivalent to have the process of the inductance of magnetic field energy to resistance release energy storage, therefore voltage and electric current are all pressed the index law decay in time, in the inductive current attenuation process, its magnetic field energy is changed to resistance and is become heat energy and consume, be that resistor has consumed the electromagnetic viscosimeter energy, damping the transient process in loop; When transient process finished, the effective blow-out of electric clearance broke resistor from the loop, damping device is withdrawed from the loop.Electric clearance has been compared following advantage with traditional vacuum gap; vacuum gap is because the particularity of itself; be easy to make electric current before zero passage, to force blow-out; promptly produce the phenomenon of damming; as using the part of vacuum gap as damping device; the effect secondary overvoltage of restriking on protected product has very easily lost the meaning of overvoltage damping device.And the electric clearance arcing is effective; and puncture voltage value stabilization; as long as voltage is reduced to set point; just reliably blow-out; not only protect effectively, nor the power frequency continued flow phenomenon can occur, and the electric clearance discharge capacity is big; current waveform is that 8/20 μ s can reach 160～170KA, guarantees that performance is safe and reliable.Therefore; the overvoltage that this overvoltage damping device of interstice causes the transient process of capacitor group when switching is effectively suppressed; accident appears in the equipment such as capacitor, discharge coil and circuit breaker that can prevent; guarantee safe power supply; to close a floodgate and the transient process damping that causes of restriking obvious; protective capability is strong, long service life.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a winding diagram of the present invention.
Embodiment
As shown in the figure, the present invention has an insulating cylinder 4, at insulating cylinder 4 internal fixation noninductive resistor 5 and gas discharger (electric clearance) 3 is arranged, and noninductive resistor 5 and gas discharger 3 are connected mutually.Be provided with end cap 2 in insulating cylinder 4 ports, on insulating cylinder 4 bottom surfaces and end cap 2, be respectively equipped with binding post 1.During use, this overvoltage damping device of interstice is in parallel with the reactor L that capacitor group C connects, GB is the circuit breaker of capacitor group among Fig. 2.According to the difference of series reactor height, can suitably adjust this height of devices, it is installed on reactor L two outlet terminals easily.Based on its special mounting means, thus power consumption resistance must be made noninductive resistance, in order to avoid the operation of series reactor is impacted.The excessive electric current that then flows through wherein of resistance value is too little, does not have the effect of damping device; Too smallly then be equivalent to short circuit, reactance does not have enough damping actions yet.(generally maintain 10～20ms), through a large amount of test evidence obtainings, the resistance of noninductive resistor 5 is generally elected 8～15 Ω as for the time that transient process is continued is fixed on a certain numerical value like this.
Claims (2)
1. an overvoltage damping device of interstice comprises insulating cylinder, it is characterized in that: at the insulating cylinder internal fixation noninductive resistor and gas discharge tube are arranged, connect between described noninductive resistor and the gas discharge tube, be provided with binding post on insulating cylinder.
2. overvoltage damping device of interstice according to claim 1 is characterized in that: the resistance of described noninductive resistor is elected 8～15 Ω as.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710307529 CN101217235A (en) | 2007-12-29 | 2007-12-29 | An overvoltage damping device of interstice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710307529 CN101217235A (en) | 2007-12-29 | 2007-12-29 | An overvoltage damping device of interstice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101217235A true CN101217235A (en) | 2008-07-09 |
Family
ID=39623611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710307529 Pending CN101217235A (en) | 2007-12-29 | 2007-12-29 | An overvoltage damping device of interstice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101217235A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531415A (en) * | 2016-12-28 | 2017-03-22 | 江苏思源赫兹互感器有限公司 | Electric reactance device with over voltage suppression and preparation method thereof |
| CN108923342A (en) * | 2018-05-28 | 2018-11-30 | 中国电力科学研究院有限公司 | A kind of GIS outlet casing tube with damping function |
-
2007
- 2007-12-29 CN CN 200710307529 patent/CN101217235A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531415A (en) * | 2016-12-28 | 2017-03-22 | 江苏思源赫兹互感器有限公司 | Electric reactance device with over voltage suppression and preparation method thereof |
| CN108923342A (en) * | 2018-05-28 | 2018-11-30 | 中国电力科学研究院有限公司 | A kind of GIS outlet casing tube with damping function |
| CN108923342B (en) * | 2018-05-28 | 2021-11-02 | 中国电力科学研究院有限公司 | GIS outlet sleeve with damping function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105119299B (en) | A kind of mesohigh power network distributed serial compensation system | |
| CN102222893A (en) | Quick fault current restrictor based on carrier isolator | |
| CN201199632Y (en) | Parallel capacitor apparatus with dual over-voltage protection | |
| CN202353174U (en) | Combined protector of high-voltage current limiting fuse | |
| CN206533122U (en) | A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR | |
| CN102290805A (en) | Electric arc grounding overvoltage limiting device applied to medium-voltage distribution system | |
| CN101217235A (en) | An overvoltage damping device of interstice | |
| CN201868869U (en) | Combined type large-capacity self-separating overvoltage protector | |
| CN201773754U (en) | High-capacity vacuum circuit breaker for protecting short-circuit impact generator used in testing station | |
| CN204441891U (en) | A kind of resonance being series at distribution network feeder eliminates spacer assembly | |
| CN206850417U (en) | One kind is based on LC parallel resonance depth current-limiting apparatus | |
| CN210517780U (en) | Medium-voltage direct-current switch | |
| CN100384046C (en) | High voltage reactive-load compensation complete equipment | |
| CN203445620U (en) | High-voltage reactive compensation wave-filtering device | |
| CN206947154U (en) | A kind of compound transformer | |
| CN201191545Y (en) | Switching overvoltage absorption apparatus | |
| CN206575146U (en) | One kind blast loss current limiting system of bridge type zero | |
| CN201388042Y (en) | Central high-voltage switch equal-height cabinet | |
| CN208174257U (en) | A kind of high pressure self-shield LC parallel resonance current limiting system | |
| CN103368165A (en) | Arc elimination and harmonic elimination and overvoltage protector | |
| CN204517398U (en) | Low residual voltage zinc oxide arrester | |
| CN202997577U (en) | High-voltage line reactive automatic compensation device | |
| CN202678942U (en) | Overvoltage protection capacitor apparatus | |
| CN203056586U (en) | High pressure dynamic reactive power compensation apparatus | |
| CN102738774A (en) | Overvoltage protection capacitor device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |