CN1819421A - Oscillation boosting method of synthetic total-working conditioner experimental device - Google Patents
Oscillation boosting method of synthetic total-working conditioner experimental device Download PDFInfo
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- CN1819421A CN1819421A CN 200610064933 CN200610064933A CN1819421A CN 1819421 A CN1819421 A CN 1819421A CN 200610064933 CN200610064933 CN 200610064933 CN 200610064933 A CN200610064933 A CN 200610064933A CN 1819421 A CN1819421 A CN 1819421A
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Abstract
The invention consists of a DC power UDC, a low voltage large capacitor C0 and a low voltage small capacitor C, a current-limiting reactor LS, a protection reactor L3, resonance reactors L1 and L2, and valves V1, V2 and V3. In first working mode, the switch S3 is closed, and other switches all are turn off. C oscillates along L1-L2-S3 closed loop to act as reversing upper voltage of C. In second working mode, the switch S1 is closed, and other switches all are turn off. C oscillates along E-S1-L3-L2-L1 closed loop to act as reversing upper voltage of C and to make voltage-increasing compensation for C. The two modes above oscillate alternatively to get the high voltage required by the test.
Description
Technical field
The present invention relates in electric power system and the power electronic system thyristor valve be carried out the method for operation test, the oscillation boosting method (Oscillation voltageboost method) of particularly a kind of compound whole-working order testing device (STE, Synthetic Test Equipment).
Background technology
Compound whole-working order testing device is the novel device that is used for the high pressure valve operation test, and Fig. 1 is its schematic diagram.It at test specimen be the core devices of modern high power electronic equipment---single, double to high-pressure thyristor valve, it can provide the proof strength with current application high-power electric and electronic element high-pressure thyristor valve actual operating mode intensity equivalence the most widely.
Experimental rig is made of jointly high voltage circuit and high-current circuit; to test high-voltage strength and test big current strength is provided by two power-supply systems respectively; by certain synthesizing mean it is alternately put on the test product thyristor valve again, adopt technology such as complicated logic control, triggering control, insulation blocking to come voltage, current strength and the dv/dt that will tolerate in the analog valve test product actual condition, the intensity of di/dt.Compound whole-working order testing device can reduce to test required power supply total capacity greatly, make employing become possibility than the operation test that low capacity satisfies high voltage current class valve sample, the examination ability that possesses extreme operating condition when device is in anomalous mode simultaneously, solved the bottleneck of restriction high pressure valve experimental technique development, had a crucial meaning for the development of high pressure valve technology.
Compound whole-working order testing device is tested high-tension generation and can be obtained by oscillation boosting method, and still traditional oscillation step-up circuit such as boost etc. are little with the oscillator capacity that the speed governing field is used, and loss is big, and output voltage is low.
Compound whole-working order testing device (STE, Synthetic Test Equipment) oscillation boosting method (Oscillationvoltage boost method) is not seen identical or similar techniques at home, outward as yet.
Summary of the invention
In order to overcome the above-mentioned defective in the middle of the prior art, the objective of the invention is to adopt oscillation boosting method, utilize vibration between different circuit to cooperate and obtain high-tension principle, provide a kind of oscillation step-up circuit capacity big, the electric pressure height, loss is little, and volt circuit is given birth in the vibration that the multiple that boosts is high.
The present invention solves the technical scheme that its technical problem takes: adopt jumbo thyristor valve as control device, cooperation by devices such as power supply, inductance, electric capacity obtains a kind of compound whole-working order testing device oscillation boosting method, comprises low-voltage dc power supply U in the topological structure circuit of its oscillation boosting method
DC, the big capacitor C of low pressure
0, the little capacitor C of high pressure, current limiting reactor L
s, protection reactor L
3, resonance reactor L
1, L
2, thyristor valve V
1, V
3, V
sLow-voltage dc power supply U
DC, current limiting reactor L
s, thyristor valve V
s, V
1, protection reactor L
3, resonance reactor L
2, L
1, be connected successively with the little capacitor C of high pressure; The big capacitor C of low pressure
0, be connected in parallel on thyristor valve V
sWith low-voltage dc power supply U
DCTwo ends; And thyristor valve V
3, be connected in parallel on resonance reactor L
2With the little capacitor C of high pressure two ends.
Oscillation boosting is realized by the cooperation of first mode of operation and second mode of operation: the first step, implement first mode of operation, i.e. thyristor valve V
3Conducting, thyristor valve V
1Turn-off; The little capacitor C of high pressure this moment will be along resonance reactor L
1-resonance reactor L
2-thyristor valve V
3The closed-loop path cycle that vibrates half, this first mode of operation plays the effect that the little capacitor C of high pressure oppositely goes up voltage;
In second step, implement second mode of operation, i.e. thyristor valve V
1Closure, gate tube valve V
3Disconnect, the little capacitor C of high pressure this moment will be along the big capacitor C of low pressure
0-thyristor valve V
1-protection reactor L
3-resonance reactor L
2-resonance reactor L
1The closed-loop path vibration, this second mode of operation plays the effect that the little capacitor C of high pressure oppositely goes up voltage, simultaneously the little capacitor C of high pressure is boosted.
Each operation of following two mode of operations of desirable operating mode once is a work period, the capacitor C high 2E of voltage rise that powers on, and the repeatedly cooperation vibration through first mode of operation and second mode of operation can obtain testing high voltage like this; Consider the existence of loss in the actual condition again, high voltage can not unconfined rising, again from the angle of energy balance, when the energy that extracts from power supply E when phase weekly and phase weekly energy of testing loss equates, circuit just enters steady operational status, obtains stable test high voltage.Can control high-tension size indirectly by the size of regulating E.
Loss is the stable key of oscillation boosting gained high voltage, makes just that just because of the existence of loss oscillation step-up circuit can steady operation, and the dependent loss that this is all combines and could analyze oscillation boosting method.
Following method and loss calculating formula are adopted in the classification of test loss:
The loss of damping resistance in the valve blocking recovery process
The energy storage of damping capacitor behind the valve blocking
The loop inductance energy storage of valve blocking between convalescence
Loop resistance loss I
RMS 2R T,
Valve on-state loss 1.15 P
T-onn
sT,
Valve static voltage sharing loss Δ V
Valve 2T '/(n
sR
d),
Cause other not damping resistance loss ∫ of conducting valve after certain valve conducting
Ti
2(t) Rs dt.
Owing to adopted above-mentioned technical scheme, the beneficial effect that the present invention has is:
And the oscillation boosting method that the present invention adopts, its principle of boosting is to utilize the vibration cooperation between different circuit to obtain high voltage, it is big that its oscillation step-up circuit has a capacity, the electric pressure height, loss is little, the advantage that the multiple that boosts is high (when input voltage was 1.1kVRMS, the maximum oscillation output voltage can reach 110kV DC).And the present invention cooperates to realize high-tension generation loss classification clear and rational by the vibration between circuit, required energy supply power supply capacity is little, and the test capacity that provides is big, and the multiple height boosts, circuit is realized simple, and control strategy realizes that easily cost is low, device is easy to choose.
Description of drawings
Fig. 1 is the schematic diagram of compound whole-working order testing device.
Fig. 2 is the circuit topological structure figure of compound whole-working order testing device oscillation boosting method of the present invention.
Fig. 3 is the schematic diagram of two kinds of mode of operations of compound whole-working order testing device oscillation boosting method of the present invention.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Referring to accompanying drawing, the topological structure of oscillation boosting method of the present invention as shown in Figure 2.It comprises low-voltage dc power supply U
DC, the big capacitor C of low pressure
0, the little capacitor C of high pressure, current limiting reactor L
s, protection reactor L
3, resonance reactor L
1, L
2, valve v
1, v
3, V
s
The oscillation boosting principle:
In order to simplify the analysis of oscillation principle, the spy does following hypothesis: be desirable low-voltage dc power supply E with Fig. 2 dotted line with left circuit equivalent 1); 2) inductance, electric capacity are ideal element; 3) can equivalence be perfect switch element S series connection ideal diode element with each valve; 4) ignore loop resistance.
Oscillation boosting needs the cooperation of 2 kinds of mode of operations, shows (thick line is represented current flow path among the figure) as Fig. 3.
First mode of operation shown in Fig. 3 (a), switch S 3 closures, rest switch all disconnects, this moment C will be along L
1-L
2-S
3The thick line closed-loop path cycle that vibrates half, this first mode of operation play the effect that reverse C goes up voltage.
Second mode of operation shown in Fig. 3 (b), switch S
1Closure, rest switch all disconnects, and this moment, C will be along E-S
1-L
3-L
2-L
1The vibration of thick line closed-loop path, this mode of operation plays the effect that reverse C goes up voltage, utilizes power supply E that C is carried out complementary energy simultaneously and boosts, and satisfies the energy loss of test.
The test high voltage will utilize the vibration of first and second mode of operations to cooperate and produce:
With reference to figure 3 (a), establish S in first mode of operation
3Capacitor C has initial forward voltage U before closed
+, S then
3Closed vibration back capacitor C has voltage-U
+, this voltage is the initial voltage of second mode of operation.
With reference to figure 3 (b), establish S in second mode of operation
1Capacitor C has initial voltage-U before closed
+, then at S
1After the closure, E will charge to C along the thick line closed-loop path, and the final voltage that can solve capacitor C according to loop KVL equation is U '
+=2E+U
+
According to above-mentioned cooperation oscillation principle, if the initial voltage of capacitor C is 0, then upward voltage will be by 2E for C, 4E, 6E ... 2nE (n=1,2,3 ...) mode increase progressively, also be every work one-period under the desirable operating mode, the test voltage on the C will increase 2E, like this by repeatedly vibrating and can obtaining testing required high pressure U by low pressure E
+
High voltage stability principle based on loss:
By the oscillation boosting principle of above analysis, test voltage will rise according to the speed of per work period 2E under the desirable operating mode; And in actual condition, because the existence of lossy (loss of the on-state loss of loop resistance loss, valve, valve damping absorption circuit resistance etc.), the energy loss of per work period also will be accompanied by increasing of test voltage and increase, and the loss of establishing per work period is W, and test voltage is U
+, W ∝ U then
+, and direct current supports capacitor C
0Voltage be one the band ripple direct voltage, establish per work period C
0Be for the complementary energy of subsequent conditioning circuit
(E
+, E
-Be C
0Give the voltage of subsequent conditioning circuit complementary energy front and back), then after test voltage is elevated to a certain value, W=W is arranged
ESet up, test promptly enters steady state condition, can control the height of steady state test voltage by the size of regulating DC power supply E.
The classification and the computational methods of test loss:
As mentioned before, stablizing on the basis that all is based upon power supply complementary energy and test loss balancing of each test run mode, therefore the analysis of testing loss is an important content, being accompanied by each mode of operation all has the loss of energy, be mainly derived from valve damping absorption resistance, loop resistance, the valve damping absorbs the energy storage of electric capacity, the loop inductance energy storage of valve blocking between convalescence etc.The classification of test loss is shown with calculating formula such as table 1:
The sorting technique of table 1 test loss
C in the table
sBe the damping capacitor of every layer crystal brake tube, n
sBe the valve series connection number of plies, L is a loop inductance, and R is a loop resistance, R
dBe the static voltage sharing of every layer of valve, I
RMSBe the current effective value of equivalent test frequency, T is the test period, Δ V
ValveBe the overshoot voltage behind the consideration valve reverse recovery characteristic, I
RrBe the peak value of thyristor reverse recovery current, P
T-onBe the thyristor on-state loss, T ' is the direct voltage action time in per test period, and i (t) is the not conducting valve damping resistance electric current that causes after certain valve conducting.
Claims (2)
1, a kind of compound whole-working order testing device oscillation boosting method, adopt jumbo thyristor valve as control device, obtain the method for compound whole-working order testing device high pressure by the cooperation of devices such as power supply, inductance, electric capacity, it is characterized in that: comprise low-voltage dc power supply U in the topological structure circuit of its oscillation boosting method
DC, the big capacitor C of low pressure
0, the little capacitor C of high pressure, current limiting reactor L
S, protection reactor L
3, resonance reactor L
1, L
2, thyristor valve V
1, V
3, V
SLow-voltage dc power supply U wherein
DC, current limiting reactor L
S, thyristor valve V
S, V
1, protection reactor L
3, resonance reactor L
2, L
1, be connected successively with the little capacitor C of high pressure; The big capacitor C of low pressure
0, be connected in parallel on thyristor valve V
sWith low-voltage dc power supply U
DCTwo ends; And thyristor valve V
3, be connected in parallel on resonance reactor L
2With the little capacitor C of high pressure two ends;
Oscillation boosting is realized by the cooperation of first mode of operation and second mode of operation: the first step, implement first mode of operation, i.e. thyristor valve V
3Conducting, thyristor valve V
1Turn-off; The little capacitor C of high pressure this moment will be along resonance reactor L
1-resonance reactor L
2-thyristor valve V
3The closed-loop path cycle that vibrates half, this first mode of operation plays the effect that the little capacitor C of high pressure oppositely goes up voltage;
In second step, implement second mode of operation, i.e. thyristor valve V
1Closure, gate tube valve V
3Disconnect, the little capacitor C of high pressure this moment will be along the big capacitor C of low pressure
0-thyristor valve V
1-protection reactor L
3-resonance reactor L
2-resonance reactor L
1The closed-loop path vibration, this second mode of operation plays the effect that the little capacitor C of high pressure oppositely goes up voltage, simultaneously the little capacitor C of high pressure is boosted;
Each operation of following two mode of operations of desirable operating mode once is a work period, the capacitor C high 2E of voltage rise that powers on, and the repeatedly cooperation vibration through first mode of operation and second mode of operation can obtain testing high voltage like this; When the energy that extracts from power supply E when phase weekly and phase weekly energy of testing loss equated, circuit just entered steady operational status, obtains stable test high voltage; Can control high-tension size indirectly by the size of regulating E.
2, a kind of compound whole-working order testing device oscillation boosting method according to claim 1 is characterized in that: following method and loss calculating formula are adopted in the classification of test loss:
The loss of damping resistance in the valve blocking recovery process
The energy storage of damping capacitor behind the valve blocking
The loop inductance energy storage of valve blocking between convalescence
Loop resistance loss I
RMS 2R T,
Valve on-state loss 1.15 P
T-onn
sT,
The loss of valve static voltage sharing
Cause other not damping resistance loss of conducting valve after certain valve conducting
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|---|---|---|---|
| CN 200610064933 CN1819421A (en) | 2006-03-17 | 2006-03-17 | Oscillation boosting method of synthetic total-working conditioner experimental device |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904277A (en) * | 2012-09-13 | 2013-01-30 | 国网智能电网研究院 | Structure utilizing resonance links to deploy direct-current transmission main circuit |
| CN102904276A (en) * | 2012-09-13 | 2013-01-30 | 国网智能电网研究院 | Resonance voltage boosting and reducing device used for new energy grid connection and implementation method thereof |
-
2006
- 2006-03-17 CN CN 200610064933 patent/CN1819421A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904277A (en) * | 2012-09-13 | 2013-01-30 | 国网智能电网研究院 | Structure utilizing resonance links to deploy direct-current transmission main circuit |
| CN102904276A (en) * | 2012-09-13 | 2013-01-30 | 国网智能电网研究院 | Resonance voltage boosting and reducing device used for new energy grid connection and implementation method thereof |
| CN102904276B (en) * | 2012-09-13 | 2016-04-20 | 国网智能电网研究院 | A kind of resonance descending device for new-energy grid-connected and its implementation |
| CN102904277B (en) * | 2012-09-13 | 2016-08-03 | 国网智能电网研究院 | One utilizes resonance link configuring direct current transmission of electricity main circuit structure |
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