CN102707163B - Experimental station for detecting silicon controlled valve bank - Google Patents
Experimental station for detecting silicon controlled valve bank Download PDFInfo
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- CN102707163B CN102707163B CN201210018832.7A CN201210018832A CN102707163B CN 102707163 B CN102707163 B CN 102707163B CN 201210018832 A CN201210018832 A CN 201210018832A CN 102707163 B CN102707163 B CN 102707163B
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- valve group
- thyristor valve
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- voltage
- loop
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/263—Circuits therefor for testing thyristors
Abstract
The invention relates to an experimental station for testing a thyristor valve bank, in particular to an all-round experimental station which is invented for the purpose of testing the thyristor valve bank. Based on the power semiconductor technology, the device can be used as an equivalent current source and a voltage source of a positive and negative parallel silicon controlled valve bank and can be used for carrying out experiments on the valve bank. The main connections of the experimental station are: the tested thyristor valve group is connected with an equipotential bus and a grounding bus, a voltage oscillation circuit is connected with the equipotential bus, a current circuit is connected between the equipotential bus and the grounding bus, and the current circuit consists of an alternating current voltage source, a current-limiting reactor, a main thyristor valve group and an auxiliary thyristor valve group. The auxiliary thyristor valve bank is connected in parallel with a loop with a secondary winding of a series transformer and a current-limiting reactor, and the loop ensures the starting of a voltage oscillation loop and the safety protection of the main thyristor valve bank when the valve bank for providing voltage to the thyristor by a driving plate is tested. The experiment station can be used for carrying out experiments on the unidirectional asymmetric silicon controlled valve bank and the bidirectional symmetric silicon controlled valve bank.
Description
Technical field
This invention be in power specialty taking power semiconductor technology as basis, can treat as positive inverse parallel thyristor valve group TCR, the equivalent current source of asynchronous machine soft start and miscellaneous equipment and voltage source use, and it is tested.
Background technology
Detect (Baoliang Sheng, Senior Member, IEEE for the experiment of thyristor valve group TCR as everyone knows; Marcio Oliveira, Member, IEEE; Hans-Ola Bjarme, " Synthetic Test Circuits forthe Operational Tests of TCR and TSC Thyristor Valves " .-IEEE-PES T & DConference, Chicago, Illinois, USA, April 21-22,2008), (seeing Fig. 1), comprises for connecting detected thyristor valve group (Vt1
+/ Vt1
-) ground strap and equipotential bus, and have voltage oscillation loop (Cs, L1 и Va3/Va4), current return (G/Lg, Ls, Va1
+/ Va1
-, Arrester, Filter banks и Shunt banks) and impulse circuit (Imp.Gen); Direct voltage source (DC Source); Be connected to the capacitor C2 of direct voltage source (DC Source) output terminal and other.
This experiment table has a lot of deficiencies and shortcoming in following situation.If the alternating-current voltage source G/Lg in current return, in low-pressure side, is detected the Vt1 of thyristor valve group
+/ Vt1
-provide energy by drive plate, alternating voltage is obtained by RC protection loop on controllable silicon, so cannot trigger voltage oscillation circuit owing to starting most there is no energy on drive plate.And because cannot accomplish that the equipment in current return is all high-power (Filter banks, Shunt banks and Ls) and ensure that its output voltage is corresponding with detected thyristor valve group voltage, be high voltage so be difficult to make alternating-current voltage source G/Lg.Certainly will address this problem just must be at detected thyristor valve group Vt1
+/ Vt1 auxiliary thyristor valve group with drive plate not in parallel, this valve group is for voltage oscillation loop start.In the time testing, also must give on the drive plate that is detected thyristor valve group and give alternating voltage.Detected thyristor valve is devoted oneself to work afterwards, and this auxiliary thyristor valve group is out of service.And this has increased another difficult problem.In addition, as thyristor valve group Va1
+/ Va1
-in the situation that control is out of control, in experiment table current return, must be powerful for the protection of the lightning arrester (Arrester) of the former device over-voltage of current return mesolow side, illustrate, such as the moment dropping into impulse circuit.
Summary of the invention
The object of the present invention is to provide a kind of experiment centre detecting for thyristor valve group, this test experience stands in when having simplified equipment, has greatly improved the safe operation of experiment.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of for thyristor valve group test experience station, include: for connecting ground strap and the equipotential bus of detected thyristor valve group; Direct voltage source; Be connected to the capacitor of DC voltage source output terminal; Be connected to the voltage oscillation loop on equipotential bus; Be connected to the current return between ground strap and equipotential bus, in this loop, be in series with alternating-current voltage source, current limiting reactor and main thyristor valve group, in current return, also comprise an auxiliary thyristor valve group, auxiliary thyristor valve group is the loop being parallel with series transformer Secondary Winding and current limiting reactor; Described auxiliary thyristor valve group is made up of just antiparallel controllable silicon and threshold circuit, and input end is connected in parallel on controllable silicon power and extremely goes up, and output terminal is extremely connected with silicon controlled control.In addition, threshold circuit energy is provided by sensor.
Main thyristor valve group in the patent of our application in current return and auxiliary thyristor valve group trigger voltage oscillation circuit simultaneously working with tested side valve group in the time testing, now disconnected the cutting of alternating-current voltage source do not dropped into.In the time that in detected thyristor valve group, drive plate has obtained allowing the alternating voltage of work, main thyristor valve group and auxiliary thyristor valve group are out of service, and tested side valve group is carried out duty.Starting experiment table tests.Drop into afterwards alternating-current voltage source and voltage oscillation loop and work with the current return of main thyristor valve group simultaneously.The voltage of auxiliary thyristor valve group is not more than 1kv, except above-mentioned functions, also will accomplish when in the situation of main thyristor valve group control thyristor valve group loss out of control or auxiliary control signal, superpotential being protected.Threshold circuit work afterwards, and make the components and parts safe operation of current return mesolow side, sensor sends all thyristor valve groups of signal block and cuts off alternating-current voltage source at this moment.If the asymmetric thyristor valve group of one direction is tested, voltage oscillation loop controllable silicon opposite direction function in the time overcharging self is completed by the silicon controlled main rectifier valve group in current return and auxiliary thyristor valve group.
The invention has the beneficial effects as follows: this test experience stands in the safe operation that also greatly improves it when having simplified experiment table equipment.This all can experiment centre be invented thyristor valve group is tested as object.Taking power semiconductor technology as basis, can use as the equivalent current source of positive inverse parallel thyristor valve group and voltage source, and valve group is tested.Auxiliary thyristor valve group is the loop being parallel with series transformer Secondary Winding and current limiting reactor, and this loop is that the startup in voltage oscillation loop and the safeguard protection of main thyristor valve group when providing the valve group of voltage to test by drive plate to controllable silicon are provided.Experiment centre can be tested the asymmetric thyristor valve group of one direction and the symmetrical thyristor valve group of twocouese.
Brief description of the drawings
Fig. 1 is the main electrical schematic diagram of experiment centre of the present invention;
Fig. 2 is the auxiliary thyristor valve group electrical schematic diagram in current return;
Fig. 3 is the sequential chart of applying for a patent experiment centre;
Experiment station owner electrical schematic diagram comprises: ground strap 1 and equipotential bus 2, detected thyristor valve group 3, direct voltage source 4; the first group capacitor 5; voltage oscillation loop 6, rectification link 7, current return 8; impulse circuit 9; distributed capacitance loop 10, first protection reactor 11 and second protection reactor 12, control system 13; voltage transformer (VT) 14, first current transformer 15 and second current transformer 16.Detected thyristor valve group 3 is the valve groups that become by positive inverse parallel Group of Silicon Controlled Rectifier, and controllable silicon positive dirction is 17, is 18 in the other direction, be that control inputs positive dirction is 17, be in the other direction 18, with the control inputs positive dirction of detected thyristor valve group 3 be 3+, be that 3-is corresponding in the other direction.Direct voltage source 4 has anodal PV at output terminal, negative pole NV and zero utmost point MV, and it is by being v with first diode 19 and second diode 20 and a winding
n(t) autotransformer 21 forms.; first output terminal of the Secondary Winding of autotransformer 21 is connected to first sun---the positive terminal of cloudy diode 19; second output terminal of its Secondary Winding is connected to negative electrode---and the negative pole end of anode diode 20, a winding voltage of autotransformer 21 is system voltage v
n(t), first output terminal of secondary side winding is that sun---cloudy form is connected with anodal PV by first diode 19 structures, being cloudy by second diode 20 structure---positive form is connected with negative pole NV, and second output terminal of Secondary Winding is connected with zero utmost point MV.The first group capacitor 5 has anodal PV, negative pole NV and zero utmost point MV, it is made up of 22 and 23 two unit, the connection of first output terminal of first unit 22 and second output terminal of second unit 23 ensures corresponding with anodal PV and negative pole NV, and second output terminal of first unit 22 and first output terminal of second unit 23 are connected with zero utmost point MV.Voltage oscillation loop 6 is in series with the second group capacitor 24, reactor 25 and first thyristor valve group 26, first thyristor valve group 26 is made up of positive dirction controllable silicon 27 and opposite direction controllable silicon 28, and 26 thyristor valve group positive dirctions of 6 inputs, voltage oscillation loop are designated 6+ and are designated 6-in the other direction.Rectification link 7 has output OUT, and anodal PV and negative pole NV include second thyristor valve group 29 and 30, the second thyristor valve groups 29 of the 3rd thyristor valve group and the 3rd thyristor valve group 30 and be made up of just antiparallel controllable silicon 31 and diode 32.The negative electrode of the anode of controllable silicon 31 and diode 32 is thyristor valve group 29 (30) first output terminals in rectification link 7 as a loop, and the anode of the negative electrode of controllable silicon 31 and diode 32 is second output terminal of the thyristor valve group 29 (30) in rectification link 7 as a loop; The output terminal OUT of rectification link 7 is connected with second output of second thyristor valve group 29 and first output terminal of the 3rd controlled pressure valve group 30, and anodal PV is connected with first output of thyristor valve group 29 and second output terminal of thyristor valve group 30 with negative pole NV.31 controllable silicon positive dirctions in rectification link 7 in Unit 29 are designated 7+, and the negative direction in Unit 30 is designated 7-.In current return 8, include the alternating-current voltage source of series connection, i.e. transformer 33, current limiting reactor 34 and main thyristor valve group 35, this valve group 35 is become by positive inverse parallel Group of Silicon Controlled Rectifier, and positive dirction is designated 36, in the other direction for being designated 37; Auxiliary thyristor valve group 38, this valve group is become by positive inverse parallel Group of Silicon Controlled Rectifier, and positive dirction is designated 39, is designated 40 in the other direction; Here the first side winding of transformer 33 be v with voltage
n(t) open and 41 be connected; Auxiliary thyristor valve group 38 is the loops that are parallel with series transformer 33 Secondary Winding and current limiting reactor 34 relations; It is 36 that the control inputs of main thyristor valve group 35 moves in the right direction, and is 37 in the other direction, and the control inputs positive dirction in current return 8 is 8+, is 8-in the other direction; It is 39 that the control inputs of auxiliary thyristor valve group 38 moves in the right direction, and is 40 in the other direction, and in current return, the control inputs of auxiliary thyristor valve group 38 moves in the right direction as 8d, is 8b in the other direction.Impulse circuit 9 has current impulse shaper (potential pulse shaper).Control system 13 is by simulation---and numeral forms with the components and parts of program chip.The connection (PV, MV, and NV) that direct voltage source 4 and the first group capacitor 5 polarity correspond to each other.Zero utmost point MV of the first group capacitor 5 is connected with ground strap 1 by second current transformer 16 with direct voltage source 4, and is connected with rectification link 7 according to corresponding polarity (PV and NV) with second protection reactor 12 by first protection reactor 11.The output terminal OUT of rectification link 7 is connected with equipotential bus 2 by voltage oscillation loop 6.First output terminal and the equipotential bus 2 of current return 8 join, and second output terminal is connected with ground strap 1 through first current transformer 15.Detected thyristor valve group 3, impulse circuit 9 and distributed capacitance loop 10 are connected between equipotential bus 2 and ground strap 1.Voltage transformer (VT) 14 output terminals are connected with the input end of control system 13, and the input terminal voltage of voltage transformer (VT) 14 is v
n(t), the output terminal of the output terminal of first current transformer 15 and second current transformer 16 is connected with the input end of control system 13, the control input end of detected thyristor valve group 3, voltage oscillation loop 6, their signal of rectification link 7 and current return 8 is respectively with 3+, 3-, 6+, 6-, 7+, 7-, 8+, 8-, 8d and 8b represent and metering-in control system.In addition the output state of the drive plate READY in detected thyristor valve group 3; the also input end of metering-in control system 13 of state of the protection output FAULT of auxiliary thyristor valve group 38 and the ON/OFF of the switch in current return 8 41, the OFF of control output end is connected with the input end of the switch 41 in current return 8.
In Fig. 2 concrete description the auxiliary thyristor valve group 38 on current return 8.Auxiliary thyristor valve group 38 includes: the loop that positive inverse parallel controllable silicon forms, and positive dirction controllable silicon 39, controllable silicon 40 in the other direction, is connected in parallel on the RC protection loop 42 on controllable silicon 39 and 40; Threshold circuit 43; First drive plate 44 and second drive plate 45, their output terminal is connected with the controllable silicon of opposite direction 40 and it is carried out to the control conversion of p-n with the controllable silicon of positive dirction 39.First drive plate 44 in auxiliary thyristor valve group 38 and the input end of second drive plate 45 are respectively controls positive dirction 39 controllable silicons and opposite direction 40 silicon controlled input signal 8d and 8b correspondence; In threshold circuit 43, C1 and C2 are respectively the input end of positive and negative controllable silicon negative electrode, and first output terminal G1 is connected with control output with second output terminal G2, and maintenance is consistent with positive dirction controllable silicon 39 and opposite direction controllable silicon 40.In threshold circuit 43, also comprise that two protection loops are respectively 46 and 47; diode rectification loop 48; sensor 49; two diodes are respectively 50 and 51; BOD---diode 52 and first resistance 53; and in threshold loop 43, first input end of C1 is connected with the positive dirction of first diode 50; first resistance 53, the ac output end (～) in diode rectification loop 48 is connected with second input end on C2 in threshold loop 43 in the reverse direction with second diode 51.Protection loop 46 and 47 all includes electric capacity 54; the 3rd diode 55; first stabilivolt 56 and second resistor 57; in first protection loop 46 and second protection loop 47, first diode 50 and second diode 51 in electric capacity 54 and second resistor 57 parallel connections; negative electrode is connected in the other direction with first stabilivolt 56, and protection loop 46 is connected with second output terminal G2 with first output terminal G1 of threshold circuit 43 with in the 3rd diode 55 positive dirctions on 47.The positive output (+) in diode rectification loop 48 and its negative output (-) are through BOD---diode 52 be connected in the input of positive dirction at sensor 49.Sensor 49 comprises 58, the four resistance 59 of the 3rd resistance and 60, the second stabilivolts 61 of the 5th resistance and Fibre Optical Sensor 62, and Fibre Optical Sensor is to protect output signal FAULT's in the auxiliary thyristor valve group 38 of transmission; Have the 3rd resistance 58 at the input end of sensor 49, on this shunt circuit, the positive dirction of the 4th resistance 59 and second stabilivolt 61 series connection in the other direction, be in series with the 5th resistance 60 and Fibre Optical Sensor 62 on just antiparallel stabilivolt 61.
In the sequential chart of Fig. 3: e (t)---the electromotive force in voltage oscillation loop; equate with voltage on first unit 22 on the first group capacitor 5 or second unit 23, and voltage on the second group capacitor 24 is voltage and the v that on 1 o'clock Fig. 1, E is ordered in protection reactor inductance value
e(t) identical with e (t), V here
s---the amplitude voltage on the first group capacitor 5 in positive dirction or negative direction, E
v---the electromotive force of voltage oscillation loop rectification under steady-working state; i
v(t)---the current return in voltage oscillation loop 6, here t
v---the pulse step size of electric current; v
24(t)---the voltage on the second group capacitor 24, V here
0, V
1, V
4and V
5---on the second group capacitor 24 at time t
0, t
1, t
4and t
5on magnitude of voltage; v
21(t)---the voltage in autotransformer 21 Secondary Winding; v
22and v (t)
23(t)---the voltage on first unit 22 and second unit 23 of the first group capacitor 5, Δ V here
s---the sparking voltage value of first unit 22 or second unit 23; i
cand i (t)
t(t)---the current value current value corresponding with tested side valve group 3 of current return 8; v
cand v (t)
t(t)---voltage and the corresponding voltage of tested side valve group 3 on current return 8, V here
m---under the steady-working state of voltage oscillation loop, turn-off detected valve group 3 Overvoltage Amplitude now; 3
+with 3
-, 6
+with 6
-, 7
+with 7
-, 8
+with 8
-, 8
dwith 8
b---be gating pulse, these pulse signals respectively with tested side valve group 3, voltage oscillation loop 6, rectification link 7 and current return 8 in positive dirction (+, d) and in the other direction (, b) corresponding; T---the real time; t
0, t
1, t
2...---time read point.In sequential chart, do not demonstrate i in the time cutting off thyristor valve group in order conveniently to watch
c(t), i
vand i (t)
t(t) opposite direction current spike.V in sequential chart 3
21(t), v
22and v (t)
23(t) be equal proportion up-sizing.
Our experiment table carries out testing in the following order: the output end voltage signal of voltage transformer (VT) 14 is v
n(t), the output terminal of first current transformer 15 is with the current signal i of current return 8
c(t), and the output terminal of second current transformer 16 be i with the electric current in voltage oscillation loop 6
v(t) the common metering-in control system 13 of signal is as synchronously carrying out work.Control wave in control system 13 is respectively 3
+, 3
-, 6
+, 6
-, 7
+, 7
-, 8
+, 8
-, 8
bwith 8
d(seeing sequential chart 3), these pulses are corresponding tested side valve group 3 respectively, voltage oscillation loop 6, rectification link 7 and current return 8 also carry out work under different condition to experiment table by them.These different states are given by program.In addition, there is the guard signal FAULT from current return 8 at the input end of control system, the state ON/OFF signal of switch 41 in the READY signal of detected thyristor valve group drive plate and current return 8.In the time that carrying out work, experiment table must consider following condition: first unit 22 in the first group capacitor 5 and the capacitance C of second unit 23
22and C
23be far longer than the capacitance C on the second group capacitor 4
24, C
22=C
23=C
s> > C
24.Protection reactor 11 and 12 is for the protection of the story electric current occurring in restriction rectification link 7, and inductance value is respectively L
11and L
12, these two values will be far smaller than the L of reactor 25
25inductance value: i.e. L
11=L
12< < L
25.First unit 22 on the first group capacitor 5 and the charging of second unit 23 are completed by direct voltage source 4 twocoueses, and voltage equals zero, and voltage is+V
swith-V
s, the rectification of thyristor valve group will complete before the time interval.
If detected thyristor valve group has drive plate, power supply is to be connected with equipotential bus by special loop, and except Experiment platform control system accident condition out of control, experiment table starts and works on consistent with following description.Controllable silicon in detected thyristor valve group 3 is driven by drive plate, and voltage is obtained by controllable silicon.When beginning, experiment table does not have power supply, and control system 13 provides signal OFF (relay contact) to switch 41, that is, switch 41 is off states.Because before experiment table is to power supply and afterwards the REDAY signal of drive plate does not have alternating voltage at the input end of control system 13 on due to detected thyristor valve group 3 and is uncontrollable.So start most with switch 41 disconnecting transformers 33 and by main thyristor valve group 35 and auxiliary thyristor valve group 38 trigger voltage oscillation circuits 6 in current return 8.Sequential chart 3 is seen in voltage oscillation loop 6 in the time of steady state (SS).It is t that first thyristor valve group 26 is opened the time point in loop 28 in the other direction by pulse signal 6-
0-(t here
0-→ t
0and t
0-< t
0, in following article, the expressed meaning is identical).Now the voltage on the second group capacitor 24 is v
24(t
0-the V of)=-
0.Main thyristor valve group 35 on current return 8 and auxiliary thyristor valve group 38 are by the superposeed voltage-V of the second group capacitor 24 of the diode circuit 32 in the opposite direction loop 28 in first thyristor valve group 26 and second thyristor valve group 29
0with the 22 cell voltage+V on the first group capacitor 5
s, that is: v
c(t
0-)=v
t(t
0-)=e (t
0-)=V
s-V
0< 0.At time point t
0upper to the control wave 8 corresponding with current return 8 and rectification link 7
+, 8
bwith 7
-.On current return 8, have positive dirction loop 36 in main thyristor valve group 35 and the opposite direction loop 40 of auxiliary thyristor valve group 38, the voltage in the voltage on current return 8 and detected thyristor valve group 3 is given to zero (v in sequential chart
cand v (t)
t(t), time point t
0).In rectification link 7, there is the 3rd the controllable silicon loop 31 in thyristor valve group 30, in this valve group, turn-off second thyristor valve group 29 by diode circuit 32.---second protection reactor 12------second current transformer 16---ground strap 1---first current transformer 15------positive dirction loop 36---equipotential bus 2---the opposite direction loop 28 in first thyristor valve group 26---reactor 25 (current i in sequential chart in main thyristor valve group 35 of the opposite direction loop 40 in auxiliary thyristor valve group 38 of second unit 23 on the first group capacitor 5 that the second group capacitor 24 overcharges in the following order: the controllable silicon loop 31 in the 3rd thyristor valve group 30
v(t) from t
0to t
1=t
0+ t
vthe time interval, here
l=L
11+ L
25=L
12+ L
25and C=C
sc
24/ (C
s+ C
24)).If voltage oscillation loop the magnitude of voltage of the Unit 23 on the first group capacitor 5 so of not working under lossy perfect condition and the second group capacitor 24 overcharging before and magnitude of voltage be afterwards (specific works order auspicious see content herein):
v
23(t
0)＝-V
S， (1)
v
24(t
0)＝-V
0 (3)
At time point t
1-upper passing through is from t with time span
1-to t
4+control wave 6
+positive dirction loop 27 to first thyristor valve group 26 is controlled.At the time point t through current return 8
1on allow for zero i
c(t
1)=0 (opposite direction current i in sequential chart
cand i (t)
v(t) not do not show), afterwards by being V with amplitude superpotential
m(the v in sequential chart
t(t) actual electrical kinetic potential E)
v=e (t
1) carry out rectification and start to cut off main thyristor valve group 35 positive dirction 36 loops and auxiliary thyristor valve group 38 loop 40 in the other direction.If V
0< V
sc
s/ C
22, overcharging from time t of the second group capacitor 24 so
0to t
1=t
0+ t
vand consistent with formula (3) and formula (4), and recharge simultaneously.23 cell discharges of the first group capacitor 5 and formula (1) and (2) consistent (v in sequential chart in this time
23(t)).From t
2to t
3time in 23 unit chargings of the first group capacitor 5 provide and be charged to magnitude of voltage-V by direct voltage source 4
s.At time point t
4-upper first thyristor valve group 26 is by pulse signal 6
+open positive dirction loop 27, and open the 3rd diode circuit 32 in thyristor valve group 30 through it, the superposeed 23 cell voltage-V of the first group capacitor 5 of the main thyristor valve group 35 on current return 8 and auxiliary thyristor valve 38
svoltage V with the second group capacitor 24
4=v
24(t
4-) > 0, that is: v
c(t
4-)=v
t(t
4-)=e (t
4-the V of)=-
s+ V
4> 0.At time point t
4upper to pulse signal 8
-, 8
dwith 7
+to current return 8 and rectification link 7.Comprise in main thyristor valve group 35 the positive dirction loop 39 in loop 37 and auxiliary thyristor valve 38 in the other direction at current return 8, the voltage of the voltage on current return 8 and tested side valve group 3 is given to zero (v in sequential chart
cand v (t)
t(t), time t
4).Rectification link 7 comprises the controllable silicon loop 31 of second thyristor valve group 29, and it is used for cutting off diode circuit 32 in the 3rd thyristor valve group 30 simultaneously.The order of overcharging of the second group capacitor 24 is as follows: reactor 25, and------------first current transformer 15---ground strap 1---second current transformer 16---the controllable silicon loop 31 of first unit 22 on the first group capacitor 5---first protection reactor 11---in second thyristor valve group 29, positive dirction loop 39 of thyristor valve group 38---assisted in the opposite direction loop 37 of main thyristor valve group 35 to equipotential bus 2 in the positive dirction loop 27 of first thyristor valve group 26.If above-mentioned work is under the lossless state of ideal, so in the time interval from t
4to t
5=t
4+ t
vfirst unit 22 of upper the first group capacitor 5 and the second group capacitor 24 are starting t
4to finishing t
5=t
4+ t
vovercharge for following formula:
v
22(t
4)＝V
S (5)
v
24(t
4)＝V
4 (7)
At time point t
5-upper passing through is from t with time span
5-to t
9+gating pulse 6
-the opposite direction loop 28 of first thyristor valve group 26 of conducting.At the time point t through current return 8
5on allow for zero (i
c(t
5)=0), afterwards by being V with amplitude superpotential
m(the v in sequential chart
c(t) actual electrical kinetic potential E)
v=e (t
5) carry out rectification and start to cut off main thyristor valve group 35 37 loops and auxiliary thyristor valve group 38 positive dirction loops 39 in the other direction.If V
4< V
sc
s/ C
22, overcharging from time t of the second group capacitor 24 so
4to t
5=t
4+ t
vconsistent with formula (7) and formula (8), and recharge simultaneously.First unit 22 electric discharges and formula (5) and (6) consistent (v in sequential chart of the first group capacitor 5 in this time
22(t)).Be t in the time interval
7÷ t
8in first unit 22 of the first group capacitor 5 charge by direct voltage source 4 from magnitude of voltage V
sbe charged to infinity.When rechargeable energy again equals at time interval t
0÷ t
1and t
4÷ t
5in active loss time, in the steady-working state in voltage oscillation loop 6, voltage is balance: V
0=V
4and V
1=V
5, the second group capacitor 24 recharge for:
Here V=V
0=V
4. obtain from formula (9)
At the regulation voltage ± V of the output terminal of direct voltage source 4
s(V
s> Δ V) can change the amplitude voltage V of the second group capacitor 5, alternating voltage v so into
t(t) in tested side valve group 3, there is wider scope.When reaching, the drive plate energy in detected thyristor valve group 3 allows magnitude of voltage v
t(t), time, provide signal READY metering-in control system 13 by drive plate.This time is time point t
6.At time point t
9on the upper controllable silicon loop 31 that is given to the 3rd thyristor valve group 30 with gating pulse 7-, be given to gating pulse 3-on the opposite direction loop 18 of tested side valve group 3 by the tested side valve group 3 (i in sequential chart of current lead-through
t(t), time interval t
9÷ t
10).The switching process of detected thyristor valve group 3 is at time t
11÷ t
12among complete.Any working condition in voltage oscillation loop is all flowed through and is detected thyristor valve group 3, the same as described.In detected thyristor valve group 3, have and allowed actual specified ac voltage and drop into transformer 33 by the switch 41 in current return 8, and by control system 13 starting current loops 8 and voltage oscillation loop 6.Must it is pointed out that time interval t in sequential chart 3
4÷ t
10be the one direction admittance value in the opposite direction loop 18 of detected thyristor valve group 3, suppose that tested side valve group is that asymmetric controllable silicon form forms, and does not have positive dirction loop 17.Opposite direction loop 37 in current return 8 in main thyristor valve group 35 and the positive dirction loop 39 in auxiliary thyristor valve group 38 have formed the forward conduction function in voltage oscillation loop.The same experiment that completes one direction thyristor valve group is also like this on commutating voltage.Because the controllable silicon in main thyristor valve group 35 is all the former device of having selected on state characteristic consistent, so the capacity on RC loop is not very large, is only all pressure values of serial connection controllable silicon.RC loop in detected thyristor valve group is the overload that protection produces due to switching process.So current return 8 wants minimum to the impact of tested side valve group in switching process.In addition, in the state of accident, the controllable silicon in the main thyristor valve group 35 in current return 8 is parallel with voltage dependent resistor (VDR) (RC loop and voltage dependent resistor (VDR) are not shown on the FIG. at first electrical principle).
Here must be noted that and in current return 8, have transformer 33, its secondary side winding is large electric current (～5kA), and same current limiting reactor 34 is also so, but voltage is low pressure (～220V).Rectification superpotential has been shunted in RC protection loop 42 (seeing Fig. 2) in auxiliary thyristor valve group 38, and rectification superpotential flows through current limiting reactor 34 (not showing in Fig. 1) through the former device of protection in main thyristor valve group 35.In the time there is high-power superpotential, such as, in initial state, in the control thyristor valve group 38 out of control or auxiliary of main thyristor valve group 35, control disappearance, auxiliary thyristor valve group 38 is by threshold circuit 43 conductings of oneself, and conducting amplitude is (600 ÷ 700) V; The now also input end to control system 13 by optical signal transmission FAULT of threshold circuit 43 conducting sensors 49.Control system 13 is recorded this signal, cancels the gating pulse of all thyristor valve groups of experiment table simultaneously and cuts off the switch 41 in current return 8.
Drive plate 44 and 45 in auxiliary thyristor valve group 38 is for controlling the controllable silicon of positive dirction 39 and opposite direction 40.Diode 50 and 51 has been shunted silicon controlled control p-n conversion in the reverse direction.Protection loop 46 and 47 is the former devices that use IXYS company for eliminating the malfunction suggestion of controllable silicon under noisy condition.When there is superpotential in auxiliary thyristor valve group 38 time, such as, BOD---diode 52 is in the time that unidirectional positive dirction arrives threshold circuit working value,---------------first resistance 53---is connected in parallel on first and protects electric capacity 54 and the second resistor 57 on loop 46---first input end C1 on threshold circuit 43 to the 3rd resistance 58 in sensor 49 to second diode 51 for negative direction (-) output terminal of diode rectification 48 and second ac output end (～) for second ac output end (～) of diode rectification 48 and positive dirction (+) output terminal in conducting loop in the following order: second input end C2 on threshold circuit 43.At BOD---when diode 52 moves, electric current is through first current-limiting resistance 53.On the 3rd resistance 58 (current sensor) of electric current in sensor 49, form pressure drop, this electric current on second stabilivolt 61, has formed the 5th resistance 60 and the stable amplitude voltage of optical sensor 62 to series connection through the 4th resistance 59 on stabilivolt 61.The above-mentioned electric current second resistor 57 on shunt capacitance 54 and first protection loop 46 of also having flowed through, has formed return voltage, and has amplified the control electric current of p-n conversion on 56, the three diodes 55 of first stabilivolt and positive dirction controllable silicon 39.39 conductings of positive dirction controllable silicon have also been shunted superpotential safely.
Claims (2)
1. the experiment centre detecting for thyristor valve group, experiment centre includes ground strap and the equipotential bus for connecting tested thyristor valve group; Direct voltage source; Be connected to the capacitor of DC voltage source output terminal; Be connected to the voltage oscillation loop of equipotential bus, be connected to the current return on ground strap and equipotential bus, on current return, be in series with alternating-current voltage source, current limiting reactor and main thyristor valve group, in the time that detected thyristor valve group is tested, on current return, be parallel with the loop being in series by alternating-current voltage source and current limiting reactor; It is characterized in that, in current return, also comprise an auxiliary thyristor valve group, the controllable silicon of this auxiliary thyristor valve group occurs with positive and negative parallel form, with threshold circuit, the input end of threshold circuit is connected with the controllable silicon power utmost point, and output terminal is connected with the silicon controlled control utmost point.
2. the experiment centre detecting for thyristor valve group according to claim 1, is characterized in that, described threshold circuit provides energy by sensor.
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| CN201210018832.7A CN102707163B (en) | 2012-01-20 | 2012-01-20 | Experimental station for detecting silicon controlled valve bank |
| PCT/CN2012/073520 WO2013107105A1 (en) | 2012-01-20 | 2012-04-05 | Experimental station for detecting thyristor valve assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210018832.7A CN102707163B (en) | 2012-01-20 | 2012-01-20 | Experimental station for detecting silicon controlled valve bank |
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| CN102707163B true CN102707163B (en) | 2014-07-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002067003A1 (en) * | 2001-02-21 | 2002-08-29 | Abb Ab | Test circuit for hvdc thyristor valves |
| CN201130240Y (en) * | 2007-11-08 | 2008-10-08 | 中国电力科学研究院 | Experimental device for synthesizing high pressure series thyristor valve |
| CN202583338U (en) * | 2012-01-20 | 2012-12-05 | 荣信电力电子股份有限公司 | An experimental station for detecting a thyristor valve group |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05113470A (en) * | 1991-10-21 | 1993-05-07 | Nissin Electric Co Ltd | Short-circuit testing device for breaker |
| JP2000304835A (en) * | 1999-04-22 | 2000-11-02 | Meidensha Corp | Test device for circuit-breaker |
| CN100392416C (en) * | 2006-03-17 | 2008-06-04 | 中国电力科学研究院 | Overcurrent tester of TCR |
-
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- 2012-01-20 CN CN201210018832.7A patent/CN102707163B/en active Active
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002067003A1 (en) * | 2001-02-21 | 2002-08-29 | Abb Ab | Test circuit for hvdc thyristor valves |
| CN201130240Y (en) * | 2007-11-08 | 2008-10-08 | 中国电力科学研究院 | Experimental device for synthesizing high pressure series thyristor valve |
| CN202583338U (en) * | 2012-01-20 | 2012-12-05 | 荣信电力电子股份有限公司 | An experimental station for detecting a thyristor valve group |
Non-Patent Citations (6)
| Title |
|---|
| Baoliang Sheng等.Synthetic Test Circuits for the Operational Tests of TCR and TSC Thyristor Valves.《Transmission and Distribution Conference and Exposition》.2008,1-5. |
| GarabiⅡHVDC晶闸管阀的运行试验;盛宝良;《高压电器》;20030228;第39卷(第1期);全文 * |
| Synthetic Test Circuits for the Operational Tests of TCR and TSC Thyristor Valves;Baoliang Sheng等;《Transmission and Distribution Conference and Exposition》;20080430;第1页第II部分、第2页第III部分，图1、图3 * |
| 温家良等.高压晶闸管阀复合"全工况"试验装置的研究.《电网技术》.2005,第29卷(第2期),38-43. |
| 盛宝良.GarabiⅡHVDC晶闸管阀的运行试验.《高压电器》.2003,第39卷(第1期),4-6. |
| 高压晶闸管阀复合"全工况"试验装置的研究;温家良等;《电网技术》;20050131;第29卷(第2期);全文 * |
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| WO2013107105A1 (en) | 2013-07-25 |
| CN102707163A (en) | 2012-10-03 |
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