CN101656165B - Gas circuit breaker - Google Patents
Gas circuit breaker Download PDFInfo
- Publication number
- CN101656165B CN101656165B CN2009101621484A CN200910162148A CN101656165B CN 101656165 B CN101656165 B CN 101656165B CN 2009101621484 A CN2009101621484 A CN 2009101621484A CN 200910162148 A CN200910162148 A CN 200910162148A CN 101656165 B CN101656165 B CN 101656165B
- Authority
- CN
- China
- Prior art keywords
- temperature
- action
- calculation
- time
- conduction impedance
- 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
Images
Landscapes
- Gas-Insulated Switchgears (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Circuit Breakers (AREA)
Abstract
The invention relates to the field of gas circuit breaker. The invention provides a gas circuit breaker, which can take account of the cooling time of conducted electric impedance body and can simultaneously shorten the elapsed time between the C1Op movements. Specifically, the gas circuit breaker is provided with a calculation portion (15) managing and calculating the calculation temperature T1 during raising and calculation temperature T3 during cooling by the pre-set upper limit permitted temperature threshold Tu and lower limit permitted temperature threshold Td. Such as a temperature characteristic curve C, at a time t2 switching on the electric impedance connection point (8), when the calculation temperature T1 is calculated and detected to achieve the upper limit permitted temperature threshold Tu, the calculation portion (15) gives a conducting locking signal to the control circuit (14), the cooling time of the conducting electric impedance body (7) is delayed, and subsequently the calculation temperature T3 during cooling of the conducting electric impedance body (7) is monitored, when the cooling temperature is detected to reach the lower limit permitted temperature threshold Td at the time t7, the conducting locking signal is released, and the control circuit (14) gives a conducting movement instruction to an operating device (13).
Description
Technical field
The present invention relates to the gas-break switch technical field, relate in particular to and a kind ofly cut off that portion's main contact and conduction impedance device are connected in parallel and the gas-break switch formed.
Background technology
In gas-break switch, what be widely known by the people is the conducting surge that takes place when suppressing conducting, the electric structure that is connected in parallel and forms of cut-out portion main contact and conduction impedance device.The conduction impedance device has the conduction impedance body and the impedance contact that are connected in series on electric.This impedance contact consists of, and closes prior to the closure of cut-out portion main contact, on major loop, connects the conduction impedance body thus and suppresses the conducting surge, again, decontrols the impedance contact prior to the open circuit of cut-out portion main contact, withdraws the conduction impedance body from major loop thus.
And, as the structure of the gas-break switch of electric be connected in parallel cut-out portion main contact and conduction impedance body device, for example put down into 11-250785 number (special permission document 1) record to some extent at the open communique of the special permission of Japan.
In existing gas-break switch, when making this conduction impedance body, the thermal capacity when in design, will consider the resistance value that suppresses the conducting surge and turn-on action.Again, in the system of using gases circuit breaker, for example, like the situation of the type of service of the relevant U.S., transmission line is long more, and the frequency of then on identical transmission line, accepting thunderbolt continuously is high more.For this reason; To this accident of being struck by lightning for the moment, begin through after the stipulated time from cutting off action, (just just like the continuous C1Op action of C1Op-C1Op-C1Op......; The conducting of circuit breaker note is made C1, and the disconnection note of circuit breaker is Op) and carry out the situation of continuous turn-on action repeatedly.
But, having in the gas-break switch of conduction impedance device, when carrying out repeatedly the continuous turn-on action of C1Op action, after primary C1Op action beginning, elapsed time does not have the regulation of strictness till secondary C1Op action beginning.Wanting does not have the state of fully cooling to carry out turn-on action next time through setting this short elapsed time when improving system stable at the conduction impedance body, because of the temperature of conduction impedance body rises the danger of the temperature limit value that reaches physics is arranged.
So the conduction impedance body of conduction impedance device is set the elapsed time that C1Op moves when being necessary to consider cooling time.But,, then can produce the problem of the poor stability of system if be set at the fixed value of the length the same to this elapsed time with the situation that has now.
Summary of the invention
The technical problem that the present invention will solve is: a kind of gas-break switch that the cooling time of the conduction impedance body of considering the conduction impedance device, can shorten the elapsed time of C1Op action is provided.
In order to solve the problems of the technologies described above, technical scheme provided by the invention is: a kind of gas-break switch comprises: cut-out portion main contact; With electric being connected in parallel of above-mentioned cut-out portion's main contact, the conduction impedance device that is connected in series conduction impedance body and impedance contact; Prior to the closure of above-mentioned cut-out portion main contact and closed above-mentioned impedance contact, and prior to the open circuit of above-mentioned cut-out portion main contact and break off the operator of above-mentioned impedance contact; The aforesaid operations device is provided the control circuit of the continuous turn-on action signal of repeated multiple times conducting and cut-out action.This gas-break switch also comprises a kind of calculation part; Calculation temperature when calculation temperature and cooling when it calculates the rising of above-mentioned conduction impedance body; When the calculation temperature reaches the upper limit permissive temperature threshold value of prior setting when this rises; By above-mentioned control circuit the conducting locking signal that the aforesaid operations device is stoped the turn-on action signal is provided, and, above-mentioned conducting locking signal removed when the calculation temperature reaches the lower limit permissive temperature threshold value of prior setting when above-mentioned cooling.
According to gas-break switch of the present invention; Calculation temperature when calculation temperature and cooling determines the elapsed time between the C1Op action during rising of the conduction impedance body of calculating in calculation part with the management of upper limit permissive temperature threshold value and lower limit permissive temperature threshold value so can when the temperature that prevents the conduction impedance body reaches the temperature limit value of physics, can consider the temperature of conduction impedance body.That is to say, the elapsed time between the C1Op action, needn't as existing situation, be made as identical fixed value, adjust so can consider ascending temperature or the chilling temperature of conduction impedance body at every turn.The situation that surmounts upper limit permissive temperature threshold value at the conduction impedance body; Give the conducting locking signal; Prolong the elapsed time so that the cooling time that can stipulate; Be the situation below the upper limit permissive temperature threshold value at impedance body again, needn't give the conducting locking signal, just can shorten the elapsed time than previous situation.Shorten all needed time of continuous turn-on action when as a result, can consider cooling time of conduction impedance body of gas-break switch.
Description of drawings
Fig. 1 is the block diagram of expression according to the integral body formation of the gas-break switch of one embodiment of the invention form;
Fig. 2 is the sequential chart of temperature characterisitic of switching characteristic and the conduction impedance body of expression cut-out portion main contact shown in Figure 1 and impedance contact;
Fig. 3 is the flow chart of the treatment step of expression calculation part shown in Figure 1.
Embodiment
Fig. 1 has shown the block diagram that the integral body of one embodiment of the invention gas-break switchs constitutes.As the general structure of the gas-break switch of being familiar with, for example, configuration cuts portion main contact 2 in the closed container 1 of encapsulation arc gas is on the center conductor that is connected insulating sleeve 3,45,6 at the two ends of this cut-out portion main contact 2.
On the cut-out portion main contact 2 in closed container 1, electric being connected in parallel is connected in series and the conduction impedance device formed by conduction impedance body 7 and impedance contact 8.The bottom of each insulating sleeve 3,4 has disposed current transformer 9,10 respectively, has even disposed transformer 11,12 respectively on the air line of the air outside terminal of each insulating sleeve 3,4.
Cut off the operator 13 of the opening and closing operations of portion's main contact 2 and impedance contact 8, be configured near the outside of closed container 1, consist of and to accept from the conducting of control circuit 14 and cut off action command and the structure of moving.Usually, gas-break switch is got the system signal of current transformer 9,10 and transformer 11,12 etc., through control circuit 14, operator 13 is instructed, and cuts off the opening and closing operations of portion.
But,, when from the setting up of the instruction of the turn-on action instruction of common control circuit 14 and calculation part 15, make it to give turn-on action and instruct operator 13 with condition repeatedly repeatedly under the situation of the continuous turn-on action of conducting.That is to say; Two current transformers 9,10 use as electric current key element acquisition device; Again; Transformer 11,12 uses as voltage key element acquisition device, has added the calculation part 15 of the calculation processing of the detail of stating after using the electric current key element obtained from these each key element acquisition devices and voltage key element etc. to carry out again.
As the calculation result of this calculation part 15, give control circuit 14 conducting locking signal that stops turn-on action and the ring off signal of removing this conducting locking signal.Give the state of control circuit 14 with this conducting locking signal, make control circuit 14 not give the instruction of operator 13 turn-on action.
The sequential chart of the temperature characterisitic of above-mentioned cut-out portion main contact 2 and the switching characteristic of impedance contact 8 and conduction impedance body 7 has shown Fig. 2.Switching characteristic by shown in this figure can be known; For the gas-break switch that is in dissengaged positions, when give operator 13 turn-on action (closing) when instruction by control circuit 14, closed circuit prior to cut-out portion main contact 2 at first; At the closed impedance contact 8 of moment t1, major loop is connected conduction impedance body 7.Then, through the ON time tR that goes ahead of the rest, at moment t3 closed amputation portion main contact 2.
Afterwards, when the accident of major loop does not have situation about recovering, when gas-break switch is cut off action (opening) instruction once more by control circuit 14,, next, open a way at moment t5 cut-out portion main contact 2 at moment t4 relieving impedance contact 8.This is C1Op action for the first time.Afterwards, the moment t6 having passed through the regulation elapsed time gives turn-on command by control circuit 14 once more, carries out the C1Op action second time.
What pay close attention to especially here is the elapsed time between the C1Op action, for example, is the elapsed time (t6-t5) between the C1Op action of the relevant temperature characteristics A that sets forth in detail of back.Say scrupulously, though after turn-on action instruction is sent the time till impedance contact 8 closures exist, simplified explanation here, be expressed as turn-on action and instruct impedance contact 8 closures when providing.Elapsed time (t5-t6) between this C1Op action, be made as fixed value so far, but the temperature characterisitic of conduction impedance body 7 is also added here, be set at the modifiable time.
The temperature characterisitic of the conduction impedance body 7 when like this, this figure has also represented about continuous turn-on action in the lump.The longitudinal axis is represented temperature, and relevant closed impedance contact 8, the temperature of conduction impedance body 7 that major loop is connected the moment t1 of conduction impedance body 7 is represented as basal temperature T2.This basal temperature T2 also can be replaced into the mensuration temperature with the arc gas in the closed container 1 of moment t1.Upper limit permissive temperature threshold value Tu and lower limit permissive temperature threshold value Td have been represented on the longitudinal axis again.
Upper limit permissive temperature threshold value Tu is to be set at the set point also lower than the physical temperature boundary value of conduction impedance body 7.The temperature of the conduction impedance body 7 when primary turn-on action; Only low when some than this upper limit permissive temperature threshold value Tu; Even the elapsed time (t5-t6) that process is set has in advance been carried out turn-on action for the second time afterwards, the temperature of conduction impedance body 7 also is the value that can not reach temperature limit value physically.
Again, lower limit permissive temperature threshold value Td, even carry out secondary turn-on action by this temperature, the temperature of conduction impedance body 7 also is can not reach temperature limit value physically and the value of moving, and is the value more taller than basal temperature T2.Represented the relevant temperature rising curve of the conduction impedance body 7 of ON time tR in advance merely again.
Temperature characteristics A, expression be that conduction impedance body 7 temperature when flowing electric current I smaller is passed.The situation that electric current I is smaller, the energy that injects conduction impedance body 7 is little, and the temperature of conduction impedance body 7 is as temperature characteristics A, like the represented rising of a chain-dotted line.
On primary turn-on action, cut-out portion main contact 2 closed moment t3 almost become peak temperature for the first time, and temperature characteristics A does not reach the upper limit permissive temperature threshold value Tu of prior setting.Like this, after the moment t3 of cut-out portion main contact 2 closures, the major part of electric current I flows through cut-out portion main contact 2, so conduction impedance body 7, is cooled off by arc gas.
Afterwards, cut off the cut-out action on portion's main contact 2 at moment t5, the moment t6 after the elapsed time of having passed through the stipulated time, conduction impedance body 7 inserts major loop once more, and by this time point, temperature characteristics A representes that once more temperature rises.Then, this temperature characteristics A almost in the moment of moment t8 closed amputation portion main contact 2, reaches peak temperature for the second time.
The temperature of the moment t6 of relevant temperature characteristics A is because of how many basal temperature T2 height than moment t1 before, so the peak temperature second time on the moment t8 is more taller than the peak temperature first time of moment t3 before.But, also do not reach upper limit permissive temperature threshold value Tu.So under above-mentioned system condition and elapsed time, even carry out continuous 2 times continuous turn-on action, the temperature of conduction impedance body 7 rises does not become problem yet.
That is to say that temperature characteristics B at the moment t3 of cut-out portion main contact 2 closures, becomes peak temperature for the first time, adds that the temperature of conduction impedance body 7 on this time point has surpassed upper limit permissive temperature threshold value Tu.But, cut-out portion main contact 2 is after the moment of closure t3, and the major part that becomes electric current I flows through the state of cut-out portion main contact 2, and conduction impedance body 7 receives the cooling effect of arc gas.
Afterwards; In temperature characteristics B,, cut off after the cut-out action on portion's main contact 2 at moment t5; If the situation little with electric current I is the same; Through the moment t6 after the initial elapsed time of regulation, insert major loop to conduction impedance body 7 once more, be the state that temperature rises once more by this time point.
In temperature characteristics B, surmounted upper limit permissive temperature threshold value Tu at the moment t3 peak temperature first time.So after this manner, the peak temperature second time on moment t8 will reach temperature limit value physically.Such phenomenon not only appears at the situation that electric current I increases, and also appears at the situation of the action frequency increase of continuous turn-on action.
So,, as by the represented temperature characteristics C of solid line, keep watch on the temperature of conduction impedance body 7 and pass, the elapsed time between the control C1Op action through the processing of calculation part 15.That is to say, for the first time during turn-on action, the temperature of conduction impedance body 7; The situation that surmounts upper limit permissive temperature threshold value Tu; Like temperature characteristics B, for the second time during turn-on action, by calculation part 15 control lags; So that be not, at the closed impedance contact 8 of the moment t7 also slower than moment t6 at the closed impedance contact 8 of moment t6.
In elapsed time between the C1Op action in this case, become the delay elapsed time (t7-t5) that also will grow than the initial setting time (t5-t6).In this time expand, conduction impedance body 7, through the cooling of the arc gas in the closed container 1, at moment t7, the temperature of conduction impedance body 7 is cooled to lower limit permissive temperature threshold value Td.Afterwards, the closed impedance contact 8 of secondary C1Op action beginning.
Know by this explanation; In the situation of the continuous turn-on action of C1Op action repeatedly repeatedly; Be not that existing that kind is set at fixed value to the elapsed time between the C1Op action, but hope to answer system condition and continuous conducting number of times, the elapsed time between the change C1Op action.
In order to realize it, set upper limit permissive temperature threshold value Tu and lower limit permissive temperature threshold value Td as the temperature of conduction impedance body 7, also be provided with the temperature of energy and conduction impedance body 7 is injected in measuring and calculating to conduction impedance body 7 according to system condition calculation part 15.Again, this calculation part 15 like above-mentioned temperature characteristics C, is handled the situation that reaches upper limit permissive temperature threshold value Tu in moment t2 calculation, handles the situation that reaches lower limit permissive temperature threshold value Td in moment t7 calculation again.
As a result, calculate when reaching upper limit permissive temperature threshold value Tu, provide the conducting locking signal, stop separately by control circuit 14 operator 13 is provided the turn-on action instruction by 15 pairs of control circuits 14 of calculation part when calculation part 15.On the other hand, when calculating out when reaching lower limit permissive temperature threshold value Td, control circuit 14 is provided the ring off signal of removing above-mentioned conducting locking signal, provide the turn-on action instruction by 14 pairs of operators 13 of control circuit.
Below, use flow chart shown in Figure 3, the treatment step on this calculation part 15 is described.At first, on step S1, electric current key element I that is obtained by current transformer 9,10 etc. and the voltage key element V1 that is obtained by transformer 11,12 etc., V2 etc. calculate the electrode impedance value R of cut-out portion.
In step 2, in order to judge the situation that conduction impedance body 7 inserts major loop, with threshold value R1, R2 relatively the identification of conduction period in advance of this electrode impedance value R that calculates and setting in advance.If in the scope of setting in advance, be judged as conduction impedance body 7 and insert major loop.The above-mentioned identification of conduction period in advance with threshold value R1, R2 is, judges the resistance value of consideration conduction impedance body 7 and the value set in order to be different from other situation to the situation that conduction impedance body 7 inserts major loops to some extent.
Through additive method, also can detect the situation that conduction impedance body 7 inserts major loops, but as stated, have by electric current key element I and voltage key element V1, V2 etc. and calculate electrode impedance value R and the advantage judged.This is because impedance contact 8 is not the time point in contact, produces the time point of discharge in advance and can detect on the impedance contact 8, so the injection energy of stating after can being calculated more scrupulously by major loop to conduction impedance body 7.
Judgement through step S2; When the situation that detects conduction impedance body 7 access major loops; In step S3; Calculation temperature T 3 is calculated calculation temperature T 1 when rising when the last time of detailing according to the ascending temperature and the back from the injection energy of major loop of relevant conduction impedance body 7, the residual temperature during turn-on action was cooled off.
Relevant conduction impedance body 7 from major loop according to the ascending temperature that injects energy, the electric current key element I that is obtained by current transformer 9,10 etc., the voltage key element V1 that is obtained by transformer 11,12 etc., V2, the volume V of conduction impedance body 7, the volume specific heat Cv of conduction impedance body 7 calculate.Again, calculation temperature T 3 during residual temperature cooling during the turn-on action of last time, when current be for the first time during turn-on action, be thought of as the temperature that fully has been cooled in the closed container 1, so equal basal temperature T2 illustrated in fig. 2.
Afterwards, in step S4, judge whether the rising calculation temperature T 1 of the conduction impedance body 7 of calculating has reached the upper limit permissive temperature threshold value Tu of prior setting.When being judged as the situation that reaches upper limit permissive temperature threshold value Tu, among the step S5,15 pairs of control circuits 14 of calculation part provide the conducting locking signal.Accept in the control circuit 14 of this signal, stop the turn-on action instruction to operator 13, conduction impedance body 7 can not insert on the major loop.
That is to say,, in step S5,, prevent that at the moment t6 impedance contact 8 is closed once more like temperature characteristics B if, in step S4,, detect the situation that reaches upper limit permissive temperature threshold value Tu at moment t2 like temperature characteristics B with Fig. 2 explanation.
Temperature characteristics C as shown in Figure 2 in the conducting of impedance contact 8, and then at moment t3, keeps watch on the cooling of the conduction impedance body 7 that after main contact 2 conductings of cut-out portion, begins.Afterwards, till the chilling temperature of keeping watch on conduction impedance body 7 reaches lower limit permissive temperature threshold value Td during, continue the prevention turn-on action of impedance contact 8.
The temperature during cooling of conduction impedance body 7 is calculated by the computing formula shown in the step S6.That is to say; Calculation temperature T 4 during the cooling of conduction impedance body 7, constant τ calculates during the cooling of calculation temperature T 1, basal temperature T2, the coolings of conduction impedance body 7 begin after the moment of Fig. 2 t3 cut-out portion main contact 2 is closed cooling elapsed time ta, conduction impedance body 7 when rising.
The temperature characteristics C of Fig. 2, when being decided to be cooling elapsed time ta from the time (t7-t3) of moment t3 till moment t7, calculation temperature T 4 becomes lower limit permissive temperature threshold value Td during cooling.When step S7 detects this,, give control circuit 14 ring off signal of removing above-mentioned conducting locking signal at step S8.At this time point, setting up with condition of turn-on action instruction becomes the state that 14 pairs of operators 13 of control circuit give the turn-on action instruction, and the beginning of C1Op action for the second time becomes the state at the closed impedance contact 8 of the moment t6 that is later than Fig. 2.
Afterwards, in step S9, judged whether to reach the continuous turn-on action number of times of regulation, the conducting number of times finishes continuous turn-on action with the situation that secondary finishes continuously, and the situation when the major loop accident continues keeps same state after cutting off action.But, at set point number so that under the situation of the turn-on action that further links repeatedly, carry out same processing repeatedly.
Like this, shown in the temperature characteristics C of Fig. 2, the situation that electric current I is big is compared with the little situation of electric current I shown in the temperature characteristics A of Fig. 2, the elapsed time between the C1Op action of the relevant turn-on action continuously of lengthening.
Thus, increase the cooling time that gives conduction impedance body 7, and the temperature of the conduction impedance body 7 when having suppressed the beginning of C1Op action for the second time prevents to reach temperature limit value physically on secondary turn-on action.And the temperature of conduction impedance body 7 is by upper limit permissive temperature threshold value Tu and lower limit permissive temperature threshold value Td management, so needn't as previous setting, extend cooling time.
Like this; When conduction impedance body 7 prevents to reach the temperature limit value of physics; In the elapsed time that follows C1Op operate time (t5-t1) closely, be extended for time of delay (t7-t5) by the initial setting time (t6-t5), can carry out integral body turn-on action continuously at short notice.
But; In the judgement of step S2, be judged to be conduction impedance body 7 when not inserting major loop; Calculation temperature T 1 is the situation below the upper limit permissive temperature threshold value Tu when perhaps in the judgement of step S4, being judged to be the rising of conduction impedance body 7, arrives step S10 respectively, does not but get into above-mentioned step S5.Thus, the conducting locking signal does not give control circuit 14, according to the elapsed time between the C1Op action of prior setting, can continue to implement continuous turn-on action.
At this moment; In step S10, calculation temperature T 4 the same mathematics formulas are calculated calculation temperature T 3 when utilizing with above-mentioned cooling, in the step S3 that moves about the next time of continuous turn-on action; Calculation temperature T 3 when adding this cooling is calculated calculation temperature T 1 when rising.
The processing of this step S10 is described with temperature characteristics A shown in Figure 2 once more.For example, the situation of calculation temperature T 1 below upper limit permissive temperature threshold value Tu when the rising on the moment t3, t3 begins from this moment, and conduction impedance body 7 begins to cool down through the arc gas in the closed container 1.
When moving the next time that moment t6 has carried out continuous turn-on action; Calculation temperature T 3 when calculating cooling to cooling elapsed time ta as (t6-t3) with the formula basic the same with step S6; In step S3; Calculate relevant t8 constantly the second time peak value rising the time calculation temperature T 1 when, calculation temperature T 3 when on according to the ascending temperature that injects energy, adding cooling.
Afterwards, in step S4, whether calculation temperature T 1 has reached the upper limit permissive temperature threshold value Tu during rising of the judgement peak value second time.Thus, at moment t6, when having carried out the secondary C1Op action of continuous turn-on action, the temperature of conduction impedance body 7 can normally be reflected in calculation and handle.Again, conduction impedance body 7 does not have the fully situation of cooling, calculation temperature T 3 during cooling, and T2 is the same with basal temperature, and under this situation, the temperature of conduction impedance body 7 also can normally be reflected to calculation and handle.
Processing on this calculation part 15 is shown in the temperature characteristics A of Fig. 2, even also can activate in the little situation of electric current I.That is to say that temperature T 3 is remaining during cooling during last action, during rising during action after this on the calculation temperature T 1, calculation temperature T 3 when adding the cooling in this time.For this reason, the action frequency of turn-on action further increases continuously, when judging the peak value of not knowing which time or near it, surmounting the situation of upper limit permissive temperature threshold value Tu, can provide the conducting locking signal equally.
Therefore, the same with previous situation, the temperature of conduction impedance body 7 can not reach temperature limit value physically, and the temperature that just can suppress conduction impedance body 7 rises.And, make upper limit permissive temperature threshold value Tu and lower limit permissive temperature threshold value Td manage the temperature of conduction impedance body 7., as estimating setting, needn't extend cooling time for this reason, just can carry out integral body turn-on action continuously at short notice.
In the above in the gas-break switch of the present invention of explanation, calculate the calculation part 15 of temperature T 4 when being provided with the rising with the upper limit permissive temperature threshold value Tu of prior setting and lower limit permissive temperature Td Management Calculation when calculation temperature T 1 and cooling.Utilize this calculation part 15; Conduction impedance body 7 reaches the temperature limit value of physics when predicting that through upper limit permissive temperature threshold value Tu next C1Op moves; Conduction impedance body 7 does not reach the temperature limit value cooling time point before of physics when predicting that through lower limit permissive temperature threshold value Td next C1Op moves; Through both predictions, in the elapsed time between the C1Op that can the extend action, increase cooling time.For this reason; Needn't stick to the number of times of system condition and continuous turn-on action; Can when the temperature that prevents conduction impedance body 7 reaches the temperature limit value of physics, shorten the elapsed time between the C1Op action, the result has also shortened the whole needed time of continuous turn-on action.
Especially, for enforcement of the present invention, as stated; Calculation temperature T 1 is got electric current key element I, voltage key element V1, the V2 of system when rising in order to calculate, and calculates the electrode impedance value R of cut-out portion; Thus, being reflected in the major loop load current flow through on the time of conduction impedance body 7.For this reason; Can detect and on impedance contact 8, produce the time point of discharge in advance; Can calculate major loop more scrupulously and give the injection energy of conduction impedance body 7, also can provide calculation temperature T 1 and the judgement of conducting locking signal and the judgement that provides the ring off signal of removing this conducting locking signal when rising more definitely.
Again; In more satisfactory embodiment; Calculate when the temperature T 4 when when calculating rising, calculating temperature T 1 and cooling; In step S10, so calculation temperature T 3 during the cooling of remaining temperature when having added the turn-on action of comfortable last time is calculation temperature T 4 can more correctly calculate when rising calculation temperature T 1 and cooling the time.
Usability on the industry
Gas-break switch of the present invention, as shown in Figure 1, be not limited to the gas-break switch that both sides have insulating sleeve 3,4, also applicable gas-break switch at relevant gas insulation opening and closing arrangement.
Claims (1)
1. gas-break switch, it possesses: cut-out portion main contact; With electric being connected in parallel of said cut-out portion's main contact, be connected in series and the conduction impedance device formed by conduction impedance body and impedance contact; Prior to the closure of said cut-out portion main contact and closed said impedance contact, and prior to the open circuit of said cut-out portion main contact and break off the operator of said impedance contact; Said operator is provided the control circuit of the continuous turn-on action signal of repeated multiple times conducting and cut-out action; It is characterized in that,
Also comprise a kind of calculation part; Calculation temperature when calculation temperature and cooling when it calculates the intensification of said conduction impedance body; When the calculation temperature reaches the upper limit permissive temperature threshold value of prior setting when this heats up; By said control circuit the conducting locking signal that said operator is stoped the turn-on action signal is provided, and, said conducting locking signal removed when the calculation temperature reaches the lower limit permissive temperature threshold value of prior setting when said cooling.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008209533 | 2008-08-18 | ||
| JP2008209533A JP5116607B2 (en) | 2008-08-18 | 2008-08-18 | Gas circuit breaker |
| JP2008-209533 | 2008-08-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101656165A CN101656165A (en) | 2010-02-24 |
| CN101656165B true CN101656165B (en) | 2012-07-18 |
Family
ID=41710397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101621484A Active CN101656165B (en) | 2008-08-18 | 2009-08-05 | Gas circuit breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5116607B2 (en) |
| CN (1) | CN101656165B (en) |
| BR (1) | BRPI0902947A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5070750B2 (en) | 2006-05-31 | 2012-11-14 | トヨタ自動車株式会社 | Brake device for vehicle and reservoir thereof |
| JP5166204B2 (en) * | 2008-10-24 | 2013-03-21 | 株式会社東芝 | Gas insulated circuit breaker system and gas insulated circuit breaker monitoring method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4934593A (en) * | 1988-02-11 | 1990-06-19 | Friedhelm Meyer | Process for setting the temperature difference between cut-in and cut-out temperature of a refrigerating unit or the like in the region of a set value, to be maintained, of the temperature |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05101907A (en) * | 1991-03-30 | 1993-04-23 | Toshiba Corp | Breaker for electric power and resistor for electric power |
| JPH0714476A (en) * | 1993-06-25 | 1995-01-17 | Toshiba Corp | Disconnecting switch with resistor |
| JPH0787664A (en) * | 1993-09-16 | 1995-03-31 | Fuji Electric Co Ltd | Protective device for vacuum switch type on-load tap changer |
| JP2003134619A (en) * | 2001-10-22 | 2003-05-09 | Mitsubishi Electric Corp | Gas insulated switchgear |
-
2008
- 2008-08-18 JP JP2008209533A patent/JP5116607B2/en active Active
-
2009
- 2009-08-05 CN CN2009101621484A patent/CN101656165B/en active Active
- 2009-08-17 BR BRPI0902947 patent/BRPI0902947A2/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4934593A (en) * | 1988-02-11 | 1990-06-19 | Friedhelm Meyer | Process for setting the temperature difference between cut-in and cut-out temperature of a refrigerating unit or the like in the region of a set value, to be maintained, of the temperature |
Non-Patent Citations (5)
| Title |
|---|
| JP特开2000-133099A 2000.05.12 |
| JP特开2006-324125A 2006.11.30 |
| JP特开平11-250785A 1999.09.17 |
| JP特开平4-98727A 1992.03.31 |
| JP特开平8-83544A 1996.03.26 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010044986A (en) | 2010-02-25 |
| CN101656165A (en) | 2010-02-24 |
| BRPI0902947A2 (en) | 2010-06-01 |
| JP5116607B2 (en) | 2013-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203774769U (en) | Electrical arc extinguishing device | |
| US9373473B2 (en) | Mechatronic circuit breaker device and associated tripping method and use thereof in interrupting a high direct current | |
| KR100763163B1 (en) | Superconducting fault current limiting system using reclosing scheme | |
| EP3091626B1 (en) | High-voltage dc circuit breaker | |
| US8817427B2 (en) | Current limitation system for limiting the effects of a fault in a DC grid and a method of operating a current limitation system | |
| EP3093941B1 (en) | Direct current circuit breaker and method using the same | |
| EP3091627A1 (en) | High-voltage dc circuit breaker | |
| US20140002943A1 (en) | Dc grid and a method of limiting the effects of a fault in a dc grid | |
| US11211215B2 (en) | Switch, and control method thereof | |
| CN106663936B (en) | For interrupting the device of the electric current on transmission line | |
| CN109617028B (en) | Marine intelligent direct-current bus coupler assembly and control method thereof | |
| US20200006933A1 (en) | High-voltage dc cut-off device | |
| CN101656165B (en) | Gas circuit breaker | |
| Li et al. | Energy based fuse modeling and simulation | |
| EP3157034B1 (en) | Mechatronic circuit-breaker device | |
| CN111049099B (en) | Pre-zero brake-separating phase control method, device and system for zero-loss deep current limiting and storage medium | |
| CN104242289A (en) | Switching overvoltage suppression device | |
| EP3869650B1 (en) | Circuit interruption device | |
| EP2656363B1 (en) | Switching arrangement | |
| Li et al. | Conceptual design of switch network unit for CFETR coil power supply systems | |
| CN216649233U (en) | Power electronic switch device for BESS system | |
| AU2010366069A1 (en) | Switching arrangement | |
| Tsirekis et al. | A methodology for the efficient application of controlled switching to current interruption cases in high-voltage networks |
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 |