CN1023358C - Shunt reactor switch producing low voltage surge - Google Patents
Shunt reactor switch producing low voltage surge Download PDFInfo
- Publication number
- CN1023358C CN1023358C CN 91100882 CN91100882A CN1023358C CN 1023358 C CN1023358 C CN 1023358C CN 91100882 CN91100882 CN 91100882 CN 91100882 A CN91100882 A CN 91100882A CN 1023358 C CN1023358 C CN 1023358C
- Authority
- CN
- China
- Prior art keywords
- switch
- voltage
- circuit
- reactor
- low voltage
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
- H01H33/161—Variable impedances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
- H01H33/593—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for ensuring operation of the switch at a predetermined point of the ac cycle
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
- Breakers (AREA)
Abstract
The subject is a reactance circuit-breaker comprising for each phase at least one disconnection chamber, provided with an operating member, and at least one varistor across the terminals of the said disconnection chamber, characterised in that the said operating member (3) is under the dependence of a circuit giving an order, so as to permit an opening ensuring an arc duration sufficient to preclude any reenergization across the terminals of the said chamber. Application to the equipment of high-voltage electrical circuits.
Description
The present invention relates to the suitable switch that produces the shunt reactor device of low voltage impulse.
Make high pressure turbine by reactor (or any other inductive circuit) open circuit on reactor and switch, be applied with stress.
Stress on the reactor at first is the amplitude of surge voltage, and particularly secondly the amplitude of the surge voltage after the arc discharge in switch is the ratio that surge voltage increases; The latter is depended on the frequency of oscillation of bus device and can destroy the cooling winding that these voltage waves are called as cut-off wave.
Be entitled as " having the EHV shunt reactor device medium-high frequency switching surge that reduces the class of insulation ", F-78659-5, IEEE PES, in July, 1978, in Los Angeles one literary composition, reported in a BPA(Bonneville Power Administration U.S.) measure voltge surge and the 300KH of 2.3P.U. on the 500KV reactor circuit
zFrequency.Resulting du/dt value is approximately every microsecond 560KV.
According to the disclosed content of this article, the design of reactor can be born whole loads with having no problem.
At " switch EHV shunt reactor induced current (French) ", CIGRE1978 in report No13-06 one literary composition, records the voltge surge ripple of a few microsecond duration on 500KV that has reported in the Soviet Union and the 750KV circuit.
In " specific question of switch industry circuit and by using nonlinear damping resistor solution (French) " literary composition, CIRED1977 human relations in May pausing meeting, the No6-4 report, the value of voltge surge depends on that whether the center line of circuit is insulation or ground connection.Under the situation with insulation center line, the voltge surge of the arc discharge in the switch can be up to 4 to 5P.U..The author advises using nonlinear resistance to prevent that arc discharge and the high speed on the consequent voltage in the switch from changing.
For owing to interdicting the extra-high pressure across switch that the superelevation electric current causes by force, the stress on the switch for example is:
-or the internal arc discharge,
If atmospheric conditions are not suitable for (snow, rain cause incorrect voltage to distribute, particularly in the situation of multicell switch) in switch, can produce outside arcing, it sets off an explosion in switch.
In order to reduce the voltge surge amplitude on the reactor, promptly can also can in switch, prevent arc discharge, the arc discharge that especially causes high voltage to impact at the end of reactor effect surge arrester.
At aforementioned last a report and " no-voltage impulse interference wave switch (French) " literary composition, CIGRE, in the 1958 No146 report, suggestion is used variable in the end of switch or nonlinear resistance comes deboost to impact.
Deutsche Bundespatent 2,361,203,1975.6.12(Siemens) suggestion Zno type metal oxide nonlinear resistance.
With the non linear coefficient of carborundum is 6 to compare, and the order of magnitude of the non linear coefficient of zinc oxide is 50, thereby the use of zinc oxide is saved the series connection circuit breaker and become possibility.
This makes that obtaining a very low electric current on the continuous operation frequency of 1P.U. becomes possibility.
Variable-resistance operating voltage is low more, and the protection effect is good more.
In the prior art, if do not emit variable resistor risk of overheating under the 1P.U. continuous operation, variable-resistance work threshold values can not be set in 1.5 to 1.6P.U. following values, unless a circuit breaker is used with the variable resistor series connection.
In order to prevent the arc discharge in switch, this arc discharge loss contact and air-blowing spout also produce the steep-front ripple in reactor circuit, the author of aforementioned CIGRE1978 annual report 13-66 suggestion that is to say small distance between contact for avoiding the short arcing time, adopts the synchronous open of switch.
This suggestion is to make the beginning of the open circuit of switch and power current synchronous, to obtain the long arcing time.
By sensing reactor supply power voltage and consider the switch open circuit time, also can make the open circuit of switch and voltage wave synchronous, thereby obtain growing the arcing time, condition is 90 ° of electric current and voltage phase differences.
An object of the present invention is to provide a suitable switch that produces the reactor device of low voltage impulse.
The invention reside in a reactor switch, it comprises at least that in every phase a switch gear room that provides operating mechanism is connected in parallel on the variable resistor of described switch gear room with at least one, wherein said operating mechanism is controlled by a circuit that the instruction of switch open circuit takes place, and makes the arcing time fully prevent to produce any arc discharge on end, described chamber.
Described variable-resistance working value is preferably between 1.5 to 1.7P.U..
Referring now to accompanying drawing most preferred embodiment of the present invention is explained in more detail.Unique accompanying drawing be according in the switch of the present invention one mutually with the schematic diagram of relevant reactor.
With reference to accompanying drawing, switch gear room 1 is disposed on the end position of strutting piece 2 and by control member 3 operations.Switch is connected with reactor 5 in circuit 4, variable resistor paralleling switch chambers 6.
According to the present invention, switch is by circuit 8 controls that the synchronous open instruction is provided, and this circuit receives for example from capacitor voltage divider C
1, C
2Voltage data and for example from the current data of current transformer 9.On the basis of these data, circuit 8 sends an enabled instruction on the time of selecting, obtain being enough to prevent to occur in switch the arc duration of any arc discharge.
Variable-resistance existence prevents to surpass the influence of any voltge surge of variable-resistance work threshold values to switch.
It should be noted that the pressure blocking of superelevation electric current can produce the voltge surge of high amplitude, simultaneously, rain or snow can produce voltge surge in giving one or more switch gear rooms of phase.
When in switch, no longer including any arc discharge, between variable-resistance operating voltage threshold values can be located at 1.5 to 1.7P.U. effectively on the value.
Threshold voltage be according between the switch input and output rather than the dielectric property between the input and output of reactor decide.
The present invention can be used to high-voltage distribution network.
Claims (1)
1, a kind of shunt reactor switch makes the variable resistor of described switch gear room bypass for every at least one switch gear room and at least one of comprising mutually, and it is characterized in that: described variable resistor has the working value between 1.5 to 1.7P.U..
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9000492A FR2657194B1 (en) | 1990-01-17 | 1990-01-17 | LOW-SURGE REACTOR CIRCUIT BREAKER. |
| FRNO9000492 | 1990-01-17 | ||
| FR9000492 | 1990-01-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1056373A CN1056373A (en) | 1991-11-20 |
| CN1023358C true CN1023358C (en) | 1993-12-29 |
Family
ID=9392848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91100882 Expired - Fee Related CN1023358C (en) | 1990-01-17 | 1991-01-17 | Shunt reactor switch producing low voltage surge |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0437838A1 (en) |
| JP (1) | JPH04218220A (en) |
| CN (1) | CN1023358C (en) |
| BR (1) | BR9100175A (en) |
| CA (1) | CA2034305C (en) |
| FR (1) | FR2657194B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207983A1 (en) * | 1992-03-13 | 1993-09-16 | Asea Brown Boveri | Multiphase h.v. network reactor on=off switch - has series-connected varistors connected across series-connected switch-chambers between reactor and network. |
| GB0411802D0 (en) * | 2004-05-26 | 2004-06-30 | Electro Magnetic Rams Ltd | Switchgear system |
| CN103578843A (en) * | 2013-11-08 | 2014-02-12 | 西安盟创电器有限公司 | Non-reignition disconnector |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1926972C3 (en) * | 1969-05-23 | 1975-07-24 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Switching device for current limitation |
| JPS4830058A (en) * | 1971-08-24 | 1973-04-20 | ||
| DE2361203A1 (en) * | 1973-12-06 | 1975-06-12 | Siemens Ag | Power cct. breaker with arc quenching - has relatively moving contacts forming switching path with parallel resistors |
| FR2506067A1 (en) * | 1981-05-15 | 1982-11-19 | Alsthom Atlantique | High voltage circuit breaker - where main switch has by=pass circuit contg. rows of resistors employed to quench arc when switch is opened |
| JPS58121519A (en) * | 1982-01-12 | 1983-07-19 | 株式会社日立製作所 | Breaker with resistance contact |
| DE3544647A1 (en) * | 1985-12-27 | 1987-06-19 | Gen Electric | Fault current circuit breaker |
-
1990
- 1990-01-17 FR FR9000492A patent/FR2657194B1/en not_active Expired - Fee Related
- 1990-12-27 EP EP90125539A patent/EP0437838A1/en not_active Withdrawn
-
1991
- 1991-01-16 BR BR919100175A patent/BR9100175A/en unknown
- 1991-01-16 CA CA 2034305 patent/CA2034305C/en not_active Expired - Fee Related
- 1991-01-17 JP JP7357191A patent/JPH04218220A/en active Pending
- 1991-01-17 CN CN 91100882 patent/CN1023358C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04218220A (en) | 1992-08-07 |
| EP0437838A1 (en) | 1991-07-24 |
| CA2034305A1 (en) | 1991-07-18 |
| FR2657194B1 (en) | 1993-12-31 |
| BR9100175A (en) | 1991-10-22 |
| CA2034305C (en) | 1997-02-11 |
| CN1056373A (en) | 1991-11-20 |
| FR2657194A1 (en) | 1991-07-19 |
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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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |