CN103457258A - Direct-current breaker used for multi-terminal direct-current system and control method thereof - Google Patents
Direct-current breaker used for multi-terminal direct-current system and control method thereof Download PDFInfo
- Publication number
- CN103457258A CN103457258A CN2013103596252A CN201310359625A CN103457258A CN 103457258 A CN103457258 A CN 103457258A CN 2013103596252 A CN2013103596252 A CN 2013103596252A CN 201310359625 A CN201310359625 A CN 201310359625A CN 103457258 A CN103457258 A CN 103457258A
- Authority
- CN
- China
- Prior art keywords
- thyristor
- current
- cutout unit
- isolating switch
- diode
- 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.)
- Granted
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a direct-current breaker used for a multi-terminal direct-current system and a control method of the direct-current breaker used for the multi-terminal direct-current system. The direct-current breaker comprises a lightning arrester, a main switch circuit and auxiliary switch circuits. The lightning arrester is connected with the main switch circuit in parallel. The main switch circuit comprises a first current-breaking unit and a second current-breaking unit, wherein the first current-breaking unit and the second current-breaking unit are the same in structure and connected in series. The two ends of the first current-breaking unit and the two ends of the second current-breaking unit are respectively connected in parallel with a first auxiliary switch circuit and a second auxiliary switch circuit which are the same in structure. Each auxiliary switch circuit comprises a thyristor-reactor serial branch circuit, a capacitor, a resistor and a valve section composed of a thyristor and a diode. Direct current is made to pass a zero to be broken through a method of reverse current injection. The half control type thyristors are adopted for forming a direct-current breaker topology, the direct-current breaker can be applied to high-voltage large-current occasions, cost is low, the technology is mature, control is easy, and losses are low.
Description
Technical field
The invention belongs to electric and electronic technical field, be specifically related to DC circuit breaker and control method thereof for a kind of MTDC transmission system.
Background technology
Multi-terminal HVDC transmission technology can realize that multiple feed, many drop points are subject to electricity, is a kind of flexible, quick, economic power transmission mode, meets the growth requirement of power industry.DC circuit breaker is a kind of very important equipment in the multi-terminal HVDC transmission engineering, in MTDC transmission system, adopt DC circuit breaker just can give full play to the characteristics and advantages of MTDC transmission system, it is high that yet DC circuit breaker breaking direct current process is born voltage, need the energy of absorption large especially, it is fast that speed is cut-off in requirement, reliability is high, and need to cut-off bidirectional current.At present, some scholars are studying the DC circuit breaker corresponding with it.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes DC circuit breaker and control method thereof for a kind of MTDC transmission system, core is based on the mode disjunction direct current that the current transfer principle adopts the stack reverse current, realized the two-way disjunction of electric current, for the development of DC circuit breaker provides a brand-new technology path.
A kind of MTDC transmission system DC circuit breaker provided by the invention, direct current system is accessed after connecting respectively reactance in two ends; Described DC circuit breaker comprises lightning arrester, main switch branch road and auxiliary branch; Described lightning arrester and described main switch branch circuit parallel connection; Its improvements are,
Described main switch branch road comprises the first cutout unit and the second cutout unit of the series connection that two groups of structures are identical; Be arranged in parallel the first auxiliary switching circuit at described the first cutout two ends, unit; Be arranged in parallel the second auxiliary switching circuit at described the second cutout two ends, unit;
Described the first auxiliary switching circuit comprises thyristor T13-reactance L1 series arm, capacitor C 1, resistance R 1, thyristor T11 and diode D1; Thyristor T11 and diode D1 inverse parallel form the first valve section, in parallel with described the first cutout unit; Described thyristor T13-reactance L1 series arm and described capacitor C 1 are connected in described the first valve section two ends over the ground, and by described resistance R 1 ground connection;
Described the second auxiliary switching circuit comprises thyristor T23-reactance L2 series arm, capacitor C 2, resistance R 2, thyristor T21 and diode D2; Thyristor T21 and diode D2 inverse parallel form the second valve section, in parallel with described the second cutout unit; Described thyristor T23-reactance L2 series arm and described capacitor C 2 are connected in described second valve section two ends over the ground, and by described resistance R 2 ground connection.
Wherein, described the first cutout unit comprises isolating switch BRK1, thyristor T1 and thyristor T12;
After described thyristor T1 and described thyristor T12 inverse parallel, with described isolating switch BRK1, connect;
Described the second cutout unit comprises isolating switch BRK2, thyristor T2 and thyristor T22;
After described thyristor T2 and described thyristor T22 inverse parallel, with described isolating switch BRK2, connect.
Wherein, in described the first auxiliary switching circuit, the anode of described thyristor T13 is connected with the negative pole of described diode D1, and its negative electrode is connected with the end of described reactance L1; Described capacitor C 1 one ends are connected with the positive pole of described diode D1; Described capacitor C 1 other end is connected with the other end of described reactance L1; Described reactance L1 is by described resistance R 1 ground connection;
In described the second auxiliary switching circuit, the anode of described thyristor T23 is connected with the negative pole of described diode D2, and its negative electrode is connected with the end of described reactance L2; Described capacitor C 2 one ends are connected with the positive pole of described diode D2; Described capacitor C 2 other ends are connected with the other end of described reactance L2; Described reactance L2 is by described resistance R 2 ground connection.
Wherein, the number of the described diode D1 in described the first auxiliary switching circuit, described thyristor T11 and described thyristor T13 is more than two;
The number of described diode D2 in described the second auxiliary switching circuit, described thyristor T21 and described thyristor T23 is more than two.
Wherein, the diode D1 in described the first valve section and the diode D2 negative pole in described second valve section join, and positive pole is connected with the current limiting reactor in circuit.
The present invention is based on a kind of MTDC transmission system that another purpose provides control method with DC circuit breaker, its improvements are, described control method comprises the steps:
Opening process:
(1) by the DC circuit breaker place in circuit, and to keep thyristor T1, thyristor T2, thyristor T12, thyristor T22, thyristor T11, thyristor T21, thyristor T13 and thyristor T23 be blocking, isolating switch BRK1 and isolating switch BRK2 are open mode;
(2) the isolating switch BRK1 in closed the first cutout unit, and trigger the thyristor T1 in described the first cutout unit;
(3) the isolating switch BRK2 in closed the second cutout unit, and trigger the thyristor T2 in described the second cutout unit;
Turn off process:
1) the thyristor T13 in triggering and conducting the first auxiliary switching circuit;
2) disconnect the isolating switch BRK1 in described the first cutout unit;
3) lightning arrestor movement absorb energy;
4) disconnect the isolating switch BRK2 in described the second cutout unit.
The present invention is based on a kind of MTDC transmission system that another purpose provides control method with DC circuit breaker, its improvements are, described control method comprises the steps:
Opening process:
(1) by the DC circuit breaker place in circuit, and to keep thyristor T1, thyristor T2, thyristor T12, thyristor T22, thyristor T11, thyristor T21, thyristor T13 and thyristor T23 be blocking, isolating switch BRK1 and isolating switch BRK2 are open mode;
(2) the isolating switch BRK2 in closed the second cutout unit, and trigger the thyristor T22 in described the second cutout unit;
(3) the isolating switch BRK1 in closed the first cutout unit, and trigger the thyristor T12 in described the first cutout unit;
Turn off process:
1) the thyristor T23 in triggering and conducting the second auxiliary switching circuit;
2) disconnect the isolating switch BRK2 in described the second cutout unit;
3) lightning arrestor movement absorb energy;
4) disconnect the isolating switch BRK1 in described the first cutout unit.
Compared with the prior art, beneficial effect of the present invention is:
The present invention combines forced commutation thought and current transfer disjunction thought, has realized the disjunction of hicap direct current.
The present invention adopts half control type device thyristor to form the DC circuit breaker topology, utilizes half control type device to replace expensive full-control type device, and on-state loss is low, and manufacturing cost and heat radiation require lower, technology maturation.
The present invention can be applicable to the high-voltage great-current occasion, and topological structure is simply compact, controls simple and easyly, and extensibility is high.
The present invention's application quick isolation switch, realized the disjunction of multi-state bidirectional, dc electric current, and breaking course is quick without arc.
The present invention utilizes auxiliary switching circuit to realize the soft open-minded of DC circuit breaker, has reduced the stress that the power device opening process bears.
The invention belongs to the mixed type high voltage DC breaker, combine the two advantage of mechanical type DC circuit breaker and solid-state direct-current circuit breaker, research and development difficulty less, be applicable to various MTDC transmission systems.
The present invention utilizes circuit for capacitor charging in the auxiliary switch loop, does not need additionally to increase charging device, thereby reduces equipment room electrical isolation difficulty, reduces floor space and cost, is easy to through engineering approaches and realizes.
The accompanying drawing explanation
Fig. 1 is DC circuit breaker structure chart provided by the invention.
The waveform schematic diagram that Fig. 2 is disjunction fault current provided by the invention.
The waveform schematic diagram that Fig. 3 is disjunction load current provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
A kind of MTDC transmission system DC circuit breaker that the present embodiment proposes, it is connected respectively after current limiting reactor and accesses electrical network by two ends, and its structure as shown in Figure 1, comprises lightning arrester, main switch branch road and auxiliary switching circuit; Its lightning arrester and main switch branch circuit parallel connection.
The main switch branch road of the present embodiment comprises two groups of the first cutout unit and second cutout unit that structure is identical; The first cutout unit comprises isolating switch BRK1, thyristor T1 and thyristor T12; After thyristor T1 and thyristor T12 inverse parallel, with isolating switch BRK1, connect; The second cutout unit comprises isolating switch BRK2, thyristor T2 and thyristor T22; After thyristor T2 and thyristor T22 inverse parallel, with isolating switch BRK2, connect.The first cutout unit and the second cutout units in series, form the main switch branch road.The present embodiment is arranged in parallel the first auxiliary switching circuit at the first two ends, cutout unit; Be arranged in parallel the second auxiliary switching circuit at the second two ends, cutout unit.
As shown in Figure 1, the first auxiliary switching circuit comprises thyristor T13-reactance L1 series arm, capacitor C 1, resistance R 1, thyristor T11 and diode D1; Thyristor T11 and diode D1 inverse parallel form the first valve section, in parallel with the first cutout unit; Thyristor T13-reactance L1 series arm and capacitor C 1 are connected in the first valve section two ends over the ground, and by resistance R 1 ground connection.
The second auxiliary switching circuit comprises thyristor T23-reactance L2 series arm, capacitor C 2, resistance R 2, thyristor T21 and diode D2; Thyristor T21 and diode D2 inverse parallel form the second valve section, in parallel with the second cutout unit; Thyristor T23-reactance L2 series arm and capacitor C 2 are connected in second valve section two ends over the ground, and by resistance R 2 ground connection.
In Fig. 1, in two groups of valve sections, diode D2 and thyristor T21 inverse parallel, diode D1 and thyristor T11 inverse parallel.Diode D1 and the D2 in every section valve section wherein, that the number of thyristor T11 and thyristor T21 is is a plurality of (in figure only by a sign), and is cascaded structure.Diode D1 and diode D2 opposite direction, thyristor T11 and thyristor T21 opposite direction.
For first auxiliary switching circuit at the first valve section place, the anode of thyristor T13 is connected with the negative pole of diode D1, and its negative electrode is connected with reactance L1; The other end of reactance L1 is connected with an end of capacitor C 1, and the other end of capacitor C 1 is connected with the positive pole of diode D1, and between reactance L1 and capacitor C 1, by resistance R 1 ground connection, R1 plays metering function, and reactance L1 works the short circuit current effect that suppresses.Wherein thyristor T13 also consists of the thyristor series aiding connection of at least one.
For second auxiliary switching circuit at second valve section place, the anode of thyristor T23 is connected with the negative pole of diode D2, and its negative electrode is connected with reactance L2; The other end of reactance L2 is connected with an end of capacitor C 2, and the other end of capacitor C 2 is connected with the positive pole of diode D2, and between reactance L2 and capacitor C 2, by another resistance R 2 ground connection, R2 plays metering function, and reactance L2 works the short circuit current effect that suppresses.Wherein thyristor T23 also consists of the thyristor series aiding connection of at least one.
Corresponding, the present embodiment proposes the control method of a kind of MTDC transmission system with DC circuit breaker, due to the breaker structure symmetry of the present embodiment, the alive disjunction mechanism of bidirectional flow is identical, only get forward and do principle analysis, but analogy in the other direction, sense of current I shown in accompanying drawing 1
dcpositive direction for electric current.For the different operating modes of disengagement failure short circuit current and cut-out load current, this circuit breaker operation principle is identical, therefore do unified explanation.The present embodiment comprises the steps:
Opening process:
Capacitor C 1 and C2 utilize link tester to cross auxiliary switching circuit C1-R and C2-R charges and keeps normal electriferous state, and voltage stabilization is in system rated voltage level.While opening, first closed quick isolation switch BRK1, triggering and conducting T1 then, electric current is by the D2-BRK1-T1 branch road, closed quick isolation switch BRK2 after current stabilization, then triggering and conducting thyristor T2, due to the branch impedance of D2 place, much larger than the T2 branch road, electric current can shift to the BRK2-T2-BRK1-T1 branch road rapidly, after current stabilization, current stabilization is by the BRK2-T2-BRK1-T1 branch road, and so far circuit breaker drops into steady operational status fully, and opening process finishes.
Turn off process:
When circuit breaker need to move breaking current, triggering and conducting T13, effect due to capacitance voltage, capacitor C1 produces rapidly a pulse current reverse with the circuit forward current in the C1-T1-BRK1-T13-L1 loop, make current over-zero in thyristor T1, because the D1 conducting provides reverse voltage to T1, thyristor T1 turn-offs, and now Quick mechanical isolating switch BRK1 is at no current situation quick acting separating brake; After BRK1 recovers blocking ability, electric current is transferred to the BRK2-T2-T13-L1-C1 branch road fully, gives capacitor C1 charging simultaneously, make capacitor C 1 voltage by upper just lower negative become upper negative under just, contrary with direction as shown.When this branch voltage reaches lightning arrester MOV operation voltage, the MOV action, current transfer is to MOV place branch road, and the energy stored in MOV absorption circuit and current-limiting inductance, when capacitor C1 charging current is zero, thyristor T13 turn-offs, the BRK2 separating brake, treat that in lightning arrester, electric current is decreased to 0 gradually, and lightning arrester recovers blocking state, so far the complete disjunction of DC circuit breaker electric current of flowing through, turn off process finishes.
As shown in Figure 2, be the waveform schematic diagram of disjunction fault current.By controlling of the DC circuit breaker to the present embodiment proposition, as can be seen from the figure, through the disjunction of 1.4ms master's branch road direct current, ultimate current is transferred to lightning arrester and carries out energy dissipation.
As shown in Figure 3, be the waveform schematic diagram of disjunction load current.By controlling of the DC circuit breaker to the present embodiment proposition, as can be seen from the figure, through the disjunction of 1.3ms master's branch road direct current, ultimate current is transferred to lightning arrester and carries out energy dissipation.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. a MTDC transmission system DC circuit breaker, direct current system is accessed after connecting respectively reactance in two ends; Described DC circuit breaker comprises lightning arrester, main switch branch road and auxiliary branch; Described lightning arrester and described main switch branch circuit parallel connection; It is characterized in that,
Described main switch branch road comprises the first cutout unit and the second cutout unit of the series connection that two groups of structures are identical; Be arranged in parallel the first auxiliary switching circuit at described the first cutout two ends, unit; Be arranged in parallel the second auxiliary switching circuit at described the second cutout two ends, unit;
Described the first auxiliary switching circuit comprises thyristor T13-reactance L1 series arm, capacitor C 1, resistance R 1, thyristor T11 and diode D1; Thyristor T11 and diode D1 inverse parallel form the first valve section, in parallel with described the first cutout unit; Described thyristor T13-reactance L1 series arm and described capacitor C 1 are connected in described the first valve section two ends over the ground, and by described resistance R 1 ground connection;
Described the second auxiliary switching circuit comprises thyristor T23-reactance L2 series arm, capacitor C 2, resistance R 2, thyristor T21 and diode D2; Thyristor T21 and diode D2 inverse parallel form the second valve section, in parallel with described the second cutout unit; Described thyristor T23-reactance L2 series arm and described capacitor C 2 are connected in described second valve section two ends over the ground, and by described resistance R 2 ground connection.
2. DC circuit breaker as claimed in claim 1, is characterized in that, described the first cutout unit comprises isolating switch BRK1, thyristor T1 and thyristor T12;
After described thyristor T1 and described thyristor T12 inverse parallel, with described isolating switch BRK1, connect;
Described the second cutout unit comprises isolating switch BRK2, thyristor T2 and thyristor T22;
After described thyristor T2 and described thyristor T22 inverse parallel, with described isolating switch BRK2, connect.
3. DC circuit breaker as claimed in claim 2, is characterized in that, in described the first auxiliary switching circuit, the anode of described thyristor T13 is connected with the negative pole of described diode D1, and its negative electrode is connected with the end of described reactance L1; Described capacitor C 1 one ends are connected with the positive pole of described diode D1; Described capacitor C 1 other end is connected with the other end of described reactance L1; Described reactance L1 is by described resistance R 1 ground connection;
In described the second auxiliary switching circuit, the anode of described thyristor T23 is connected with the negative pole of described diode D2, and its negative electrode is connected with the end of described reactance L2; Described capacitor C 2 one ends are connected with the positive pole of described diode D2; Described capacitor C 2 other ends are connected with the other end of described reactance L2; Described reactance L2 is by described resistance R 2 ground connection.
4. DC circuit breaker as claimed in claim 2, is characterized in that, the number of the described diode D1 in described the first auxiliary switching circuit, described thyristor T11 and described thyristor T13 is more than two;
The number of described diode D2 in described the second auxiliary switching circuit, described thyristor T21 and described thyristor T23 is more than two.
5. described DC circuit breaker as arbitrary as claim 1-4, is characterized in that, the diode D1 in described the first valve section and the diode D2 negative pole in described second valve section join, and positive pole is connected with the current limiting reactor in circuit.
6. the control method of a MTDC transmission system use DC circuit breaker, is characterized in that, described control method comprises the steps:
Opening process:
(1) by the DC circuit breaker place in circuit, and to keep thyristor T1, thyristor T2, thyristor T12, thyristor T22, thyristor T11, thyristor T21, thyristor T13 and thyristor T23 be blocking, isolating switch BRK1 and isolating switch BRK2 are open mode;
(2) the isolating switch BRK1 in closed the first cutout unit, the thyristor T1 in described the first cutout unit of triggering and conducting;
(3) the isolating switch BRK2 in closed the second cutout unit, the thyristor T2 in described the second cutout unit of triggering and conducting;
Turn off process:
1) the thyristor T13 in triggering and conducting the first auxiliary switching circuit;
2) disconnect the isolating switch BRK1 in described the first cutout unit;
3) lightning arrestor movement absorb energy;
4) disconnect the isolating switch BRK2 in described the second cutout unit.
7. the control method of a MTDC transmission system use DC circuit breaker, is characterized in that, described control method comprises the steps:
Opening process:
(1) by the DC circuit breaker place in circuit, and to keep thyristor T1, thyristor T2, thyristor T12, thyristor T22, thyristor T11, thyristor T21, thyristor T13 and thyristor T23 be blocking, isolating switch BRK1 and isolating switch BRK2 are open mode;
(2) the isolating switch BRK2 in closed the second cutout unit, the thyristor T22 in described the second cutout unit of triggering and conducting;
(3) the isolating switch BRK1 in closed the first cutout unit, the thyristor T12 in described the first cutout unit of triggering and conducting;
Turn off process:
1) the thyristor T23 in triggering and conducting the second auxiliary switching circuit;
2) disconnect the isolating switch BRK2 in described the second cutout unit;
3) lightning arrestor movement absorb energy;
4) disconnect the isolating switch BRK1 in described the first cutout unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359625.2A CN103457258B (en) | 2013-08-16 | 2013-08-16 | A kind of MTDC transmission system DC circuit breaker and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359625.2A CN103457258B (en) | 2013-08-16 | 2013-08-16 | A kind of MTDC transmission system DC circuit breaker and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103457258A true CN103457258A (en) | 2013-12-18 |
| CN103457258B CN103457258B (en) | 2016-04-20 |
Family
ID=49739350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310359625.2A Active CN103457258B (en) | 2013-08-16 | 2013-08-16 | A kind of MTDC transmission system DC circuit breaker and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103457258B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900444A (en) * | 2015-06-26 | 2015-09-09 | 华北电力大学 | Direct current (DC) breaker topology structure and DC breaker control method |
| CN104979795A (en) * | 2014-04-08 | 2015-10-14 | 国家电网公司 | Passive high-voltage direct-current circuit breaker and implementation method therefor |
| CN105870877A (en) * | 2016-03-14 | 2016-08-17 | 全球能源互联网研究院 | Thyristor-based passive hybrid direct current circuit breaker and application method therefor |
| WO2016197973A1 (en) * | 2015-06-10 | 2016-12-15 | 许继集团有限公司 | Pre-charged high-speed direct-current breaker and control method therefor, and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130050881A1 (en) * | 2010-05-11 | 2013-02-28 | Abb Technology Ag | Plant for transmitting high voltage dc electric power including overvoltage protection |
| CN102959818A (en) * | 2010-06-30 | 2013-03-06 | Abb技术有限公司 | An hvdc switchyard and an hvdc switchyard system |
-
2013
- 2013-08-16 CN CN201310359625.2A patent/CN103457258B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130050881A1 (en) * | 2010-05-11 | 2013-02-28 | Abb Technology Ag | Plant for transmitting high voltage dc electric power including overvoltage protection |
| CN102959818A (en) * | 2010-06-30 | 2013-03-06 | Abb技术有限公司 | An hvdc switchyard and an hvdc switchyard system |
Non-Patent Citations (1)
| Title |
|---|
| 王晨等: "混合型限流断路器在高短路电流上升率时换流试验分析", 《电力系统自动化》, vol. 33, no. 16, 25 August 2009 (2009-08-25), pages 65 - 70 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979795A (en) * | 2014-04-08 | 2015-10-14 | 国家电网公司 | Passive high-voltage direct-current circuit breaker and implementation method therefor |
| WO2015154537A1 (en) * | 2014-04-08 | 2015-10-15 | 国家电网公司 | Passive high-voltage direct-current circuit breaker and implementation method therefor |
| EP3131166A4 (en) * | 2014-04-08 | 2017-12-06 | State Grid Corporation of China (SGCC) | Passive high-voltage direct-current circuit breaker and implementation method therefor |
| CN104979795B (en) * | 2014-04-08 | 2018-10-09 | 国家电网公司 | A kind of passive high voltage DC breaker and its implementation |
| WO2016197973A1 (en) * | 2015-06-10 | 2016-12-15 | 许继集团有限公司 | Pre-charged high-speed direct-current breaker and control method therefor, and storage medium |
| CN104900444A (en) * | 2015-06-26 | 2015-09-09 | 华北电力大学 | Direct current (DC) breaker topology structure and DC breaker control method |
| CN105870877A (en) * | 2016-03-14 | 2016-08-17 | 全球能源互联网研究院 | Thyristor-based passive hybrid direct current circuit breaker and application method therefor |
| CN105870877B (en) * | 2016-03-14 | 2019-12-13 | 全球能源互联网研究院 | passive hybrid direct current breaker based on thyristor and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103457258B (en) | 2016-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103457257B (en) | A kind of MTDC transmission system dc circuit breaker and control method thereof | |
| CN103457256B (en) | A kind of MTDC transmission system DC circuit breaker and control method thereof | |
| CN103441489B (en) | A kind of MTDC transmission system DC circuit breaker and control method thereof | |
| CN103474983B (en) | High voltage and great current direct-current circuit breaker and control method thereof | |
| CN105870877B (en) | passive hybrid direct current breaker based on thyristor and application method thereof | |
| CN104900444B (en) | The topological structure and its control method of dc circuit breaker | |
| WO2017181927A1 (en) | Direct current switch-off device and control method thereof | |
| CN104979796B (en) | A kind of precharge type high speed d-c circuit breaker and its control method | |
| CN106207953B (en) | High-power hybrid direct current circuit breaker | |
| CN104753044A (en) | Topological structure of hybrid all-solid state high-voltage DC breaker | |
| CN104242229A (en) | Multi-break hybrid direct current breaker | |
| CN104638605A (en) | Capacitive buffer type mixed high-voltage direct current circuit breaker and control method thereof | |
| CN103681039B (en) | A kind of high-voltage direct-current breaker topology | |
| CN103646805B (en) | A kind of direct-current breaker topology | |
| CN104980137B (en) | A kind of all solid state high speed d-c circuit breaker of forced commutation type and commutation switch | |
| CN103647248A (en) | High-voltage DC rapid breaker | |
| CN106356817A (en) | Bridge type bidirectional non-arc direct-current circuit breaker | |
| CN103441490B (en) | A kind of MTDC transmission system dc circuit breaker and control method thereof | |
| CN203800578U (en) | High-voltage direct-current circuit breaker | |
| CN103457258B (en) | A kind of MTDC transmission system DC circuit breaker and control method thereof | |
| CN105680411A (en) | DC solid state circuit breaker and broken circuit control method | |
| CN204391676U (en) | A kind of capacitive buffer formula mixed high-voltage DC circuit breaker | |
| CN103647263A (en) | DC circuit breaker based on half-control electric-power electronic devices | |
| CN110311354B (en) | Medium-voltage high-capacity hybrid direct-current circuit breaker and current-limiting breaking method | |
| CN205160034U (en) | Take high voltage direct current circuit breaker of coupling reactance ware |
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 |