CN86203937U - Spark gap switching-in mechanism for ultra-high voltage parallel - Google Patents
Spark gap switching-in mechanism for ultra-high voltage parallel Download PDFInfo
- Publication number
- CN86203937U CN86203937U CN 86203937 CN86203937U CN86203937U CN 86203937 U CN86203937 U CN 86203937U CN 86203937 CN86203937 CN 86203937 CN 86203937 U CN86203937 U CN 86203937U CN 86203937 U CN86203937 U CN 86203937U
- Authority
- CN
- China
- Prior art keywords
- spark gap
- shunt reactor
- gap
- high voltage
- reactor
- 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 - Lifetime
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Abstract
The utility model relates to a spark gap switching-in mechanism used for an automatically throwing with an ultra-high voltage parallel reactor in an ultra-high voltage electric transmission line. The spark gap switching-in mechanism for ultra-high voltage parallel reactor comprises a breaker (1) without an isolator, a spark gap switching-in circuit (2) and a parallel reactor (3). The utility model solves the difficulties when the spark gap is switched in the paralleling reactor on condition of adopting various breakers without the isolators. The utility model can economically and easily achieve the object of automatically throwing with the parallel reactor in various ultra-high voltage lines to limit power frequency overvoltage due to accidents of tripping operation, so the safety of the system and the mechanism can be ensured.
Description
The utility model is a kind of superhigh pressure shunt reactor spark gap access device that is used for dropping into automatically the superhigh pressure shunt reactor in the superelevation transmission line.
Extra high voltage network is when unloaded, underloading or emergency stop valve trip, because capacity effect, can produce the circuit power-frequency overvoltage and jeopardize the electric equipment in the electrical network and the normal operation of system.Common solution is at the suitable place attaching shunt reactor of circuit.Though this method can limit power-frequency overvoltage effectively, this fixing long-term shunt reactor that inserts has increased power consumption, has caused the deterioration of system's pressure regulation condition and reactive balance under certain condition.Simultaneously, operating experience shows that the long-term connecting system reliability of operation of shunt reactor is relatively poor.
In order to solve above-mentioned contradiction, people have proposed to make shunt reactor through this way of spark gap connecting system circuit.In system operation just often promptly, shunt reactor and system line are thrown off, have an accident tripping operation when power-frequency overvoltage occurring in system, the spark gap puncture drops into shunt reactor, breaker closing in parallel with spark gap thereupon immediately.But, in order to be fit to the insulation level of electric equipment in the system, the puncture operation voltage area requirement of spark gap is stabilized in 1.35～1.5V
XGInterior (V
XGBe the highest operation phase voltage of system).And when circuit breaker excision shunt reactor, can be out of service smoothly in order to make shunt reactor, the 1.9～2.0V that is produced when requiring spark gap can bear circuit breaker excision reactor again
XGOvervoltage and do not puncture.The where the shoe pinches of shunt reactor spark gap access device is implemented in the opposite requirement of natural quality in this and general gap just.
The present state of the art is that indivedual countries have adopted the air circuit that has isolator, and spark gap is in parallel with the isolator of this circuit breaker, reach the purpose of automatic input shunt reactor.But, for most of circuit breakers, owing to be not with isolator, so can not adopt this mode to realize inserting automatically with spark gap on the line the purpose of shunt reactor.If want to realize this mode, just certainly will increase a circuit breaker and substitute isolator in the above-mentioned circuit breaker that has an isolator, or existing circuit breaker is replaced by the air circuit that has isolator.And superhigh pressure electric substation from now on all trends towards adopting sulphur hexafluoride (SF
6) circuit breaker, iff adopt the air circuit of isolator and set up a cover compression air assembly thereupon, certainly will increase operating cost and maintenance workload in order to drop into reactor automatically.Obviously, these ways all are irrational except certain conditions technically and economically.
The purpose of this utility model is developed a kind of spark gap exactly and is inserted the loop and form a superhigh pressure shunt reactor spark gap access device with circuit breaker, the shunt reactor with isolator not.Make it both to reach the purpose of automatic input shunt reactor, reach purpose economic, easy in force, that help promoting again.
The utility model superhigh pressure shunt reactor spark gap access device is formed by not inserting loop three parts with the circuit breaker of isolator and shunt reactor, spark gap.
Insert in the loop at spark gap: at first, spark gap is one group of several one-tenth even number (2,4,6 ...) individual main gap, and these main gaps come dividing potential drop by capacitance-resistance, make its total compressive resistance greater than 2.0V
XGSecondly the gap of igniting is set,, and auxiliary fracture and current-limiting resistance is set in the loop, gap of igniting with dividing potential drop capacitance-resistance formation loop of voltage regulation wherein.When auxiliary fracture is closed, the action of the whole group main gap clearance control of being ignited.When dropping into shunt reactor, by the gap action of igniting, then moved step by step by each main gap more earlier, its setting value is 1.35～1.5V
XGWhen making reactor out of service, will assist fracture to disconnect earlier, and make the gap of igniting inoperative.Fracture overvoltage (1.9～the 2.0V that is produced when at this moment, the main gap of whole group series connection can bear circuit breaker excision shunt reactor
XG) and be failure to actuate, make it shunt reactor successfully to be withdrawed from, reach the requirement of site technology.Again it, according to actual conditions, the setting of main gap can be two, also can be the main gap of the one-tenth even number more than two.When needing the main gap of four and above one-tenth even number, inductance element is set to stablize the voltage on the dividing potential drop capacitance-resistance in the loop, guarantee the correct operation of main gap.
In the shunt reactor part; In order to slow down the rising of shunt reactor anode-cathode voltage, guarantee the correct operation in gap one by one, when the equivalent direct-to-ground capacitance of shunt reactor is big inadequately, add capacitor in its end.
The advantage of the utility model superhigh pressure shunt reactor spark gap access device is: the effect of (1) its over-voltage is identical with the mode of fixed access system reactor, and it does not have the long-term power consumption increase that reactor produced that inserts, the unfavorable factor that does not yet have pressure regulation condition and reactive balance to worsen.(2) compare with the way that substitutes the air circuit that has isolator with two circuit breakers, saved investment.Because spark gap of the present utility model inserts the auxiliary fracture in the loop, its requirement of withstand voltage is half of identical electric pressure circuit breaker, only suitable " half platform " circuit breaker.If by the fracture number, only half of the identical voltage level breaker fracture number of need just.Or adopt just more passable than the be at half circuit breaker of voltage of identical electric pressure.Consider from the cutout ability, since very low to the requirement of auxiliary fracture, so also can substitute with on-load switch.Particularly, what the utility model utilized is existing circuit breaker (promptly majority is a circuit breaker of not being with isolator) and shunt reactor, promotes easily.
Accompanying drawing is the circuit diagram of superhigh pressure shunt reactor spark gap access device that inserts four main gaps of employing of extra high voltage network, and the circuit diagram of drawing is the phase in the three-phase.
Among the figure: (1) is the breaker portion of not being with isolator.Wherein, (B) be each arc extinguishing fracture (C in the circuit breaker
1) be each the dividing potential drop electric capacity on the circuit breaker.(2) are that spark gap inserts the loop among the figure.Wherein, (C
2) be dividing potential drop electric capacity, (R) be divider resistance, (L
0) be inductance element, (G
1, G
2, G
3, G
4) be each main gap, (B ') is auxiliary fracture, (G
5) be the gap of igniting, (r) be current-limiting resistance.(3) are the shunt reactor parts among the figure.Wherein, (L) being shunt reactor, (C) is capacitor.(when the direct-to-ground capacitance of shunt reactor is enough big, can establish this capacitor in the reality)
Be described further referring now to accompanying drawing:
When extra-high voltage transmission normally moved, breaker arc extinguishing fracture (B) was in off-state, and auxiliary fracture (B ') is in closure state, whole group main gap (G
1, G
2, G
3, G
4) gap (G is ignited
5) control.Produce power-frequency overvoltage when system has an accident to trip, the spark gap when reaching requirement input shunt reactor (L) punctures operation voltage 1.35～1.5V
XGThe time, gap (G ignites
5) at first puncture action by setting value.Then, each main gap is by predetermined setting value, with main gap (G
2) → (G
1) → (G
3) → (G
4) order successively puncture action, drop into shunt reactor (L).Thereupon, circuit breaker each fracture (B) closure in parallel with each main gap.After the accident, will assist fracture (B ') to disconnect.With the time, the gap (G that ignites in the loop of igniting
5) owing to assist the disconnection of fracture (B ') not drop into, so each main gap (G
1, G
2, G
3, G
4) in the time of in the dividing potential drop of capacitance-resistance, can bearing each fracture of circuit breaker (B) excision shunt reactor (L), overvoltage (1.9～2.0V that fracture (B) is produced
XG) and do not puncture action, guaranteed withdrawing from smoothly of shunt reactor (L).Then, auxiliary fracture (B ') is closed again, the original state when whole superhigh pressure shunt reactor spark gap access device recovery normally moves in system.
Claims (4)
1, a kind of superhigh pressure shunt reactor spark gap access device that is used for dropping into automatically shunt reactor in extra high voltage network is characterized in that loop (2) and shunt reactor (3) three parts form by not inserting with the circuit breaker (1) of isolator, spark gap.
2, superhigh pressure shunt reactor spark gap access device according to claim 1 is characterized in that it is by several capacitors (C that said spark gap inserts loop (2)
2), resistance (R), inductance element (L
0), auxiliary fracture (B '), gap (G ignites
5), current-limiting resistance (r) and several are connected into the main gap (G of even number
1, G
2) formed.
3, according to the described superhigh pressure spark gap of claim 2 access device, it is characterized in that said auxiliary fracture (B ') is half of fracture number of identical voltage level breaker (1) by the fracture number, or the circuit breaker that is at half of electric pressure, also can be on-load switch.
4,, it is characterized in that said shunt reactor part (3) is to be formed in parallel by reactor (L) and the capacitor (C) that adds where necessary according to claim 1 and 3 described superhigh pressure shunt reactor spark gap access devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86203937 CN86203937U (en) | 1986-06-06 | 1986-06-06 | Spark gap switching-in mechanism for ultra-high voltage parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86203937 CN86203937U (en) | 1986-06-06 | 1986-06-06 | Spark gap switching-in mechanism for ultra-high voltage parallel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86203937U true CN86203937U (en) | 1987-05-20 |
Family
ID=4807122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86203937 Expired - Lifetime CN86203937U (en) | 1986-06-06 | 1986-06-06 | Spark gap switching-in mechanism for ultra-high voltage parallel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86203937U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078006C (en) * | 1994-09-20 | 2002-01-16 | 株式会社日立制作所 | Transient restoring voltage control method, and gas insulation switch used in this method |
| CN108565850A (en) * | 2018-05-21 | 2018-09-21 | 西安交通大学 | The concatenated lightning protection device of multistage gap |
| CN108808644A (en) * | 2018-06-28 | 2018-11-13 | 西安交通大学 | Plural serial stage gap arrester for power electronic equipment lightning protection |
| CN112152138A (en) * | 2020-10-13 | 2020-12-29 | 国网山东省电力公司经济技术研究院 | Method and system for determining capacity of high-voltage shunt reactor |
-
1986
- 1986-06-06 CN CN 86203937 patent/CN86203937U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078006C (en) * | 1994-09-20 | 2002-01-16 | 株式会社日立制作所 | Transient restoring voltage control method, and gas insulation switch used in this method |
| CN108565850A (en) * | 2018-05-21 | 2018-09-21 | 西安交通大学 | The concatenated lightning protection device of multistage gap |
| CN108565850B (en) * | 2018-05-21 | 2019-08-13 | 西安交通大学 | The concatenated lightning protection device of multistage gap |
| CN108808644A (en) * | 2018-06-28 | 2018-11-13 | 西安交通大学 | Plural serial stage gap arrester for power electronic equipment lightning protection |
| CN108808644B (en) * | 2018-06-28 | 2019-08-13 | 西安交通大学 | Plural serial stage gap arrester for power electronic equipment lightning protection |
| CN112152138A (en) * | 2020-10-13 | 2020-12-29 | 国网山东省电力公司经济技术研究院 | Method and system for determining capacity of high-voltage shunt reactor |
| CN112152138B (en) * | 2020-10-13 | 2021-09-14 | 国网山东省电力公司经济技术研究院 | Method and system for determining capacity of high-voltage shunt reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |