CN107171353A - A kind of light-operated valve control method for preventing that electric current can not be set up during direct current unblock - Google Patents
A kind of light-operated valve control method for preventing that electric current can not be set up during direct current unblock Download PDFInfo
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- CN107171353A CN107171353A CN201710452951.6A CN201710452951A CN107171353A CN 107171353 A CN107171353 A CN 107171353A CN 201710452951 A CN201710452951 A CN 201710452951A CN 107171353 A CN107171353 A CN 107171353A
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- valve
- inverter station
- degree
- moment
- trigger pulse
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of light-operated valve control method for preventing that electric current can not be set up during direct current unblock, comprise the following steps in a power cycle：Step 1, No. 1 to No. 12 valve of converting plant and Inverter Station are spaced 30 degree of hair Trig control signals successively respectively；Step 2, the corresponding moment of Inverter Station Trigger Angle initial value is set as T1Moment, T10 degree of No. 1 valve triggering controlling cycle of moment correspondence, T1At the moment, hair trigger pulse is carried out to No. 1 valve of Inverter Station；Step 3, when detecting the valve being not turned on and bearing forward voltage again, trigger pulse is reissued to the valve that this is not turned on；Step 4：In TNMoment reissues trigger pulse, T to each valve of Inverter StationN=T130 degree of+(N 1).The present invention reissues pulsed logic by increasing in Inverter Station every 30 degree, extends converter valve throughput time, improves the probability that converting plant and Inverter Station converter valve are simultaneously turned on, improves the availability and reliability of DC engineering.
Description
Technical field
The invention belongs to power electronics and technical field of power systems, and in particular to one kind prevents electric current during direct current unblock
The light-operated valve control method that can not be set up.
Background technology
The pulse conversion valve of high voltage DC engineering 12 receives the periodic triggers pulse that valve control equipment is sent, in order in succession
12 single valves are turned on, realize that exchange is changed with direct current.During normal operation, 12 single valve each cycles receive triggering control letter
Number, Trig control signal that each single valve is received differs 30 degree, in each Trig control signal rising edge, and now corresponding single valve is held
By forward voltage, valve control equipment receives the forward voltage that converter valve sends and set up after signal, sends trigger pulse by former conducting valve
Electric current be transferred to next conducting valve, realize the commutation process between two converter valves.During direct current unblock, using normal
The trigger pulse mode of operation can not set up DC current, and current DC engineering is using pulse strategy is mended, in Trig control signal
Rising edge sends first trigger pulse, because now other converter valves are not turned on yet, it is impossible to changed between two converter valves
Phase, converter valve, which can not be stablized, to be turned on, and forward voltage is born at converter valve two ends again, and valve control equipment is received and reissued after forward voltage
Trigger pulse, it is however generally that, when two station DC voltage differences are sufficiently large, with regard to DC current can be set up.
But in actual DC running, above-mentioned valve control benefit pulse strategy is likely to occur DC current setup time and is up to
Several seconds can not set up the situation of direct current locking that causes for a long time, influence the availability and reliability of DC engineering.
The content of the invention
In view of the shortcomings of the prior art, prevent that electric current can not be built during direct current unblock it is an object of the invention to provide one kind
Vertical light-operated valve control method, solves current valve control and mends pulse strategy by detecting that valve forward voltage reissues pulse with one
Determine randomness and light-operated valve reissues pulse number by optical power limit, possibly can not simultaneously turn on two station converter valves, direct current
The problem of electric current can not be set up for a long time.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of light-operated valve control method for preventing that electric current can not be set up during direct current unblock is straight for 12 pulse conversion valves
The direct current releasing process of transmission system is flowed, is comprised the following steps in a power cycle：
Step 1,30 degree are spaced successively to No. 1 to No. 12 valve of converting plant send Trig control signal, to Inverter Station No. 1 to 12
Number valve is spaced 30 degree and sends Trig control signal successively；
Step 2, the corresponding moment of Inverter Station Trigger Angle initial value is set as T1Moment, T1No. 1 valve triggering control week of moment correspondence
0 degree of phase, in T1At the moment, trigger pulse is sent out to No. 1 valve of No. 1 valve of Inverter Station and converting plant, in TmMoment is respectively to converting plant and inverse
Become station M valves hair trigger pulse, wherein：Tm=T130 degree of+(m-1), 2≤m≤12, m is natural number；
If step 3, detecting a certain valve in No. 1 to No. 12 valve of No. 1 to No. 12 valve of converting plant and Inverter Station and being not turned on,
When detecting the valve being not turned on and bearing forward voltage again, trigger pulse is reissued to the valve that this is not turned on；
Step 4：In TNMoment reissues trigger pulse to each valve of Inverter Station, wherein：TN=T130 degree of+(N-1), 2≤N≤
4, and N is natural number.
It is preferred that, Inverter Station Trigger Angle initial value is taken as 135 degree.
Compared with prior art, the beneficial effects of the present invention are：The present invention in HVDC releasing process, by
Reissue pulsed logic of the Inverter Station increase every 30 degree, converting plant does not increase, and number of pulses is mended in fixed intervals increase, is extended and is changed
Valve throughput time is flowed, improve the probability that converting plant and Inverter Station converter valve are simultaneously turned on, it is to avoid may go out in the prior art
Existing DC current setup time can not be set up up to several seconds or long-time causes the situation of direct current locking, greatly improves direct current
The availability and reliability of engineering.
Brief description of the drawings
Fig. 1 is a kind of light-operated valve control method Inverter Station 1 for preventing that electric current can not be set up during direct current unblock of the present invention
To the structural representation of No. 12 valves；
Fig. 2 illustrates for a kind of flow for preventing the light-operated valve control method that electric current can not be set up during direct current unblock of the present invention
Figure；
Fig. 3 for the present invention it is a kind of prevent direct current unlock during the light-operated valve control method embodiment that can not set up of electric current it is inverse
Become No. 1 to No. 2 valve trigger pulse schematic diagram in station.
Embodiment
For a better understanding of the present invention, the invention will be further described below in conjunction with the accompanying drawings, but the reality of the present invention
Apply mode not limited to this.
A kind of light-operated valve control method for preventing that electric current can not be set up during direct current unblock is straight for 12 pulse conversion valves
The direct current releasing process of transmission system is flowed, such as Fig. 2 comprises the following steps in a power cycle：
S1：No. 1 to No. 12 valve of converting plant is spaced 30 degree and sends Trig control signal, same Inverter Station No. 1 to No. 12 successively
Valve is spaced 30 degree and sends Trig control signal successively, and each Trig control signal maintains 120 degree；
S2：If the corresponding moment of Inverter Station Trigger Angle initial value is the T1 moment, No. 1 valve triggering controlling cycle of T1 moment correspondence
0 degree, at the T1 moment, trigger pulse is sent out to No. 1 valve of No. 1 valve of Inverter Station and converting plant, at the Tm moment respectively to converting plant and inverse
Become station M valves hair trigger pulse, wherein：30 degree of Tm=T1+ (m-1), 2≤m≤12, m is natural number；
S3：It is preferred that, Inverter Station Trigger Angle initial value is taken as 135 degree of power cycle；
S4：If detecting a certain valve in No. 1 to No. 12 valve of No. 1 to No. 12 valve of converting plant and Inverter Station to be not turned on, in inspection
When measuring the valve being not turned on and bearing forward voltage again, trigger pulse is reissued to the valve that this is not turned on；
S5：In TNMoment reissues trigger pulse to each valve of Inverter Station, wherein：TN=T130 degree of+(N-1), 2≤N≤4, and
N is natural number.
Embodiment：
No. 1 structural representation to No. 12 valves of Inverter Station mends pulsed logic, ten as shown in figure 1, retaining original converter valve
Two 30 degree of pulse conversion valve intervals order turn on, i.e., converting plant and Inverter Station No. 1 to No. 12 valves Trig control signal successively
30 degree of interval, trigger pulse is produced in Trig control signal rising edge, if converter valve can not be turned on for the first time, detects each valve again
It is secondary to bear after forward voltage, in each valve triggering controlling cycle, trigger pulse is reissued accordingly.
Increase the benefit pulsed logic every 30 degree in Inverter Station, No. 1 to No. 2 valve trigger pulse schematic diagram is as shown in figure 3, T1
Moment carries out reissuing pulse to No. 1 valve, in No. 1 valve triggering controlling cycle (120 degree) 30,60,90 degree correspondingly the moment reissue
Trigger pulse, the above-mentioned moment be exactly correspondence other No. 2, No. 3, No. 4 valves are at the time of turn on for the first time, change of current during each valve conducting
Valve flows through electric current and becomes big suddenly, then tapers into, number of pulses is mended in fixed intervals increase can extend the change of current to a certain extent
Valve throughput time, improves the probability that converting plant is simultaneously turned on Inverter Station converter valve.
Because the time that Inverter Station converter valve bears forward voltage in triggering controlling cycle is more much smaller than converting plant, typically
For to bear time of forward voltage in triggering controlling cycle be 180 ° of-α (α is Trigger Angle), α is bigger, then bears forward voltage
Time is shorter, and the too small then influence systems of α are stable, typically no less than 120 degree, and pulsed logic is mended every 30 degree to coordinate, and extension is touched
Converter valve bears the time of forward voltage in hair controlling cycle, it is preferred that by the Trigger Angle of Inverter Station during unblock by initial value
About 150 degree are optimized for 135 degree, so, during 135 degree of power cycle, and trigger pulse is sent out to No. 1 valve, at 165 degree, and No. 1 valve is carried out
Pulse is reissued in pressure, this ensure that No. 1 valve bears forward voltage when forcing that No. 1 valve is carried out reissuing pulse time, is extended
The change of current currency, improve the probability that converting plant is simultaneously turned on Inverter Station converter valve.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (2)
1. a kind of light-operated valve control method for preventing that electric current can not be set up during direct current unblock, for 12 pulse conversion valve direct currents
The direct current releasing process of transmission system, it is characterised in that comprise the following steps in a power cycle：
Step 1,30 degree are spaced successively to No. 1 to No. 12 valve of converting plant send Trig control signal, to No. 1 to No. 12 valve of Inverter Station
It is spaced 30 degree successively and sends Trig control signal；
Step 2, the corresponding moment of Inverter Station Trigger Angle initial value is set as T1Moment, T1No. 1 valve triggering controlling cycle of moment correspondence
0 degree, in T1At the moment, trigger pulse is sent out to No. 1 valve of No. 1 valve of Inverter Station and converting plant, in TmMoment is respectively to converting plant and Inverter Station
M valves send out trigger pulse, wherein：Tm=T130 degree of+(m-1), 2≤m≤12, m is natural number；
If step 3, detecting a certain valve in No. 1 to No. 12 valve of No. 1 to No. 12 valve of converting plant and Inverter Station and being not turned on, in detection
When bearing forward voltage again to the valve being not turned on, trigger pulse is reissued to the valve that this is not turned on；
Step 4：In TNMoment reissues trigger pulse to each valve of Inverter Station, wherein：TN=T130 degree of+(N-1), 2≤N≤4, and N
For natural number.
2. the light-operated valve control method according to claim 1 for preventing that electric current can not be set up during direct current unblock, its feature
It is, Inverter Station Trigger Angle initial value is taken as 135 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452951.6A CN107171353B (en) | 2017-06-15 | 2017-06-15 | Light control valve control method for preventing current from being unable to be established during direct current unlocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452951.6A CN107171353B (en) | 2017-06-15 | 2017-06-15 | Light control valve control method for preventing current from being unable to be established during direct current unlocking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107171353A true CN107171353A (en) | 2017-09-15 |
| CN107171353B CN107171353B (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710452951.6A Active CN107171353B (en) | 2017-06-15 | 2017-06-15 | Light control valve control method for preventing current from being unable to be established during direct current unlocking |
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| Country | Link |
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| CN (1) | CN107171353B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149914A (en) * | 2018-07-09 | 2019-01-04 | 南方电网科学研究院有限责任公司 | A kind of valve base electronic device reissues pulse method |
| CN113472222A (en) * | 2021-05-26 | 2021-10-01 | 南方电网科学研究院有限责任公司 | Complementary pulse control method for thyristor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3221831A1 (en) * | 1981-06-16 | 1983-01-05 | Mitsubishi Electric Corp | Thyristor arrangement |
| CN101187690A (en) * | 2007-11-28 | 2008-05-28 | 中国电力科学研究院 | DC converter valve restoration period transient forward voltage test method |
| CN104092232A (en) * | 2014-06-26 | 2014-10-08 | 国家电网公司 | Automatic locking method for battery replacement station of flexible direct-current transmission system |
| CN106526418A (en) * | 2016-11-04 | 2017-03-22 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Closed-loop control system of converter valve trigger circuit of conventional high-voltage direct-current power transmission system, and control method and fault positioning method thereof |
-
2017
- 2017-06-15 CN CN201710452951.6A patent/CN107171353B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3221831A1 (en) * | 1981-06-16 | 1983-01-05 | Mitsubishi Electric Corp | Thyristor arrangement |
| CN101187690A (en) * | 2007-11-28 | 2008-05-28 | 中国电力科学研究院 | DC converter valve restoration period transient forward voltage test method |
| CN104092232A (en) * | 2014-06-26 | 2014-10-08 | 国家电网公司 | Automatic locking method for battery replacement station of flexible direct-current transmission system |
| CN106526418A (en) * | 2016-11-04 | 2017-03-22 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Closed-loop control system of converter valve trigger circuit of conventional high-voltage direct-current power transmission system, and control method and fault positioning method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 黄义隆等: "天广直流换流阀异常导通EMTDC仿真分析", 《电力系统保护与控制》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149914A (en) * | 2018-07-09 | 2019-01-04 | 南方电网科学研究院有限责任公司 | A kind of valve base electronic device reissues pulse method |
| CN113472222A (en) * | 2021-05-26 | 2021-10-01 | 南方电网科学研究院有限责任公司 | Complementary pulse control method for thyristor |
| CN113472222B (en) * | 2021-05-26 | 2022-06-14 | 南方电网科学研究院有限责任公司 | Complementary pulse control method for thyristor |
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| CN107171353B (en) | 2020-03-20 |
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