EP3317891A1 - Direct-current switching device - Google Patents
Direct-current switching deviceInfo
- Publication number
- EP3317891A1 EP3317891A1 EP16751241.7A EP16751241A EP3317891A1 EP 3317891 A1 EP3317891 A1 EP 3317891A1 EP 16751241 A EP16751241 A EP 16751241A EP 3317891 A1 EP3317891 A1 EP 3317891A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching device
- circuit
- resonant circuit
- current path
- medium
- 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
- 239000004065 semiconductor Substances 0.000 claims abstract description 74
- 230000005284 excitation Effects 0.000 claims abstract description 21
- 230000001939 inductive effect Effects 0.000 claims abstract description 14
- 230000010355 oscillation Effects 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003455 independent Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 235000010678 Paulownia tomentosa Nutrition 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/547—Combinations of mechanical switches and static switches, the latter being controlled by the former
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
- H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
Definitions
- the invention relates to a DC switching device for interrupting an electrical DC current flowing along a medium or high-voltage current path, having an electrical circuit arrangement which has a mechanical switching device which can be connected in the medium or high-voltage current path, wherein the electrical circuit arrangement interconnected in the to force a current zero crossing in the medium or high voltage current path mechanical stressesge ⁇ advises further comprises (i) an LC circuit having at least one inductive component and at least one capacitive component for the formation of a gezzie via the switching device ⁇ nen Oscillating circuit and (ii) has at least one switchable semiconductor component ⁇ conductor component for generating an oscillating circuit anre ⁇ ing excitation frequency.
- a mechanical switching device of medium and high voltage ⁇ technology such as a vacuum interrupter, requires a current zero crossing for the interruption of a current.
- this current zero crossing is always present in the currently prevailing technology for generating, transmitting and distributing electrical energy by means of alternating current.
- a DC switching device of the type mentioned is known from the publication US 2013/0070492 AI. This shows a DC switching device for interrupting a nes along a high-voltage DC current electric DC current, with an electrical circuit arrangement, the one in the high-voltage DC path
- the electrical circuit arrangement for forcing a current zero crossing in the high-voltage DC switched ver ⁇ switched mechanical interrupter further (i) an LC circuit with at least one inductive component and at least one capacitive component for the formation of a via the Breaker closed active resonant circuit and (ii) a switchable semiconductor device for generating an oscillating circuit exciting excitation frequency.
- This semiconductor device is a turn-off type semiconductor device which is connected in series with the mechanical breaker in the DC path.
- the semiconductor device must be dimensioned only for a small part of the total voltage across the DC switching device and is protected by a surge arrester.
- a surge arrester For this DC interruption method, unlike DC switching devices based on other known methods of DC interruption, no precharged capacitor and high arc arc voltage are required.
- a major disadvantage of this switching principle is to the mechanical ⁇ rule switching device in series lying in the current path-connected semiconductor device, which, however, produced when switched on permanently losses can be minimized by selecting a suitable semiconductor component, but always occur in principle. It is the object of the invention to provide a DC switching device for medium and high voltage applications, in which the said difficulties are overcome. The object is achieved by the features of the inde- pendent claims ⁇ . Advantageous embodiments are specified in the subclaims.
- the at least one switchable semiconductor ⁇ device in such a way in the electrical circuitry arranged to at a mispositioning of the mechanical switching device in the medium or high voltage current path always outside the medium or high voltage current path lies.
- the at least one switchable semiconductor component in another portion of the resonant circuit ⁇ , thus for example in the LC circuit, and / or arranged in a completely different part of the electrical circuitry.
- the DC current I flowing when the mechanical switching device is closed is not unnecessarily loaded by power dissipation generated in the switchable semiconductor.
- a plurality of switchable semiconductor devices are provided.
- the at least one switchable semiconductor component is arranged in a part of the electrical circuit arrangement, which is also outside the resonant circuit. It is provided in particular that the outside of the
- Resonant circuit lying part of the electrical circuit has a coupled to the resonant circuit excitation resonant circuit for exciting a vibration of the resonant circuit, wherein the switchable semiconductor device or at least one of the switchable semiconductor devices is arranged in this excitation resonant circuit.
- the excitation resonant circuit is preferably inductively coupled to the resonant circuit. The coupling takes place in particular via a transformer.
- the at least one switchable semiconducting ⁇ terbauelement and an LC circuit of theatsschwingkrei ⁇ ses are connected in a half-bridge circuit (half-bridge).
- the switchable Halbleitererbauele ⁇ element or at least one of the switchable Halbleitererbauele ⁇ elements in another section of the resonant circuit, in particular in its LC circuit, is arranged.
- the at least one switching ⁇ bare semiconductor device and the LC circuit of the resonant circuit ⁇ are connected either in a half-bridge circuit or in a bridge circuit.
- the circuit arrangement has at least one outgoing current branch from the middle or high-voltage current path, in which the switchable semiconductor component or at least one of the switchable semiconductor components is connected.
- the circuit arrangement has a parallel connected to the mechanical switching devicedersabieiter.
- the DC switching device has a control and / or regulating device for coordinated activation of the mechanical switching device and the at least one switchable semiconductor component .
- the invention further relates to the use of the aforementioned DC switching device for interrupting a DC electrical current flowing along a medium or high voltage current path I.
- FIG. 1 shows a DC switching device according to a first preferred embodiment of the invention
- Fig. 2 is a DC switching device according to a
- Fig. 3 is a DC switching device according to a
- Fig. 1 shows a DC switching device 10 for
- the DC switching device 10 Interrupting a current flowing along a medium or high voltage current path 12 DC electrical current I.
- the DC switching device 10 is of course also suitable for turning on the DC current I to the current path 12, which is far less expensive.
- the DC current switching device 10 has an electrical circuit ⁇ arrangement 14, which in turn comprises a connectable in the middle or high voltage current path 12 (and in the specific case interconnected) mechanical switching device 16.
- DIE ses mechanical switching device 16 is for example a vacuum circuit ⁇ to switch tube or other mechanical breaker 18, as is known also from the currently prevailing technology for the generation, transmission and distribution of electric energy by means of alternating current in the medium or high voltage range.
- ge ⁇ closed resonant circuit 20 further comprises electrical formwork ⁇ processing arrangement 14 a parallel to the switching device 16 connected LC circuit 22 having a capacitive component 24 and two inductive components 26, 28. Capacitive and inductive components 24, 26, 28 are maral ⁇ tet in series.
- a current zero ⁇ passage can now be generated in the interconnected in the middle or high voltage current path 12 mechanical switching device 16. For this, the resonant circuit must be excited to oscillate, in which the magnitude of the current amplitude is greater than the DC current I to be interrupted.
- a surge arrester 30 is connected.
- the circuit arrangement 14 furthermore has a further (circuit) element 32.
- This further circuit part 32 comprises a DC and / or DC voltage source 34, a load connected to the DC power source 34 series scarf ⁇ tung 36 of two semiconductor devices 38, 40, and a white ⁇ tere LC circuit 42 having a capacitive component 44 and an inductive component 46 to forming an excitation ⁇ resonant circuit 48.
- Capacitive and inductive components 44, 46 are connected in series.
- This excitation oscillation ⁇ circle 48 is coupled via a transformer 50 inductively coupled to the resonant circuit 20th
- the inductive Comp ⁇ component 46 of the other LC circuit 42 forms the primary side of the transformer 50 and the second inductive component 28 of an LC circuit 22, the secondary side of the transformer 50.
- At least one of the semiconductor devices 38, 40 is a switchable semiconductor component to Generation of an over the switching device 16 extending resonant circuit 20 to ⁇ exciting excitation frequency.
- This at least one switchable semiconductor component is arranged in the electric circuit arrangement 14 / connected that it is at a ⁇ Ver switch of the mechanical switching device 16 in the medium or high voltage current path 12 is always outside the current path 12th
- the resonant circuit 20 can be selectively excited to oscillate by means of the excitation oscillating circuit 48 with the semiconductor components 38, 40 arranged therein and thus is an active resonant circuit 20.
- the DC switching means 10 further comprises a control and / or regulating device 52 to the arrival coordinated control of the mechanical switching device 16 and the semiconducting ⁇ terbauimplantation 38, 40th The latter simultaneously measures the alternating current in the resonant circuit 20 via a corresponding sensor 54.
- the corresponding signal lines between the control and / or regulating device 52 and the semiconductor components 38, 40 or the sensor 54 are shown in dashed lines.
- Fig. 1 variant of the DC switching means 10 are determined by the circuit arrangement 14 thus -parallel coupled to the mechanical switching device 16 via the transformer 50, two resonant circuits 20, 48 reali Siert ⁇ .
- an additional inductance ⁇ tivity (for example, the inductive component 26) is added as needed to the transformer inductance 28, 46.
- a half-bridge circuit 56 of the two semiconductor devices 38, 40 (exemplified here as two MOSFETs) a
- the energy for the vibration can either from an additional DC and / or DC power source 34 or directly from the
- the semiconductor device 38 off and semicon ⁇ terbauelement 40 is turned on; on the other hand, if the current in the resonant circuit 20 is negative, the semiconductor device 38 is switched on and the semiconductor component 40 is switched off.
- current and voltage in the resonant circuit 20 are in phase and the current can oscillate with maximum amplitude.
- pa rallel ⁇ for mechanical operation of the surge arrester (for example, an MO varistor) integrated 30th
- the mechanical switching device 16 In normal operation, the mechanical switching device 16 is closed and the semiconductor components 38, 40 are not activated. The forward losses of the entire DC switching device 10 are limited to the low ohmic losses of the closed mechanical switching device 16.
- the switching device 16 During switching, for example when an error in the attached castle ⁇ NEN DC power supply, the switching device 16 is opened. To generate an artificial current zero crossing, the two semiconductor components 38, 40 are driven accordingly, so that the DC current in the switching device 16, a current oscillation is superimposed, which leads to an artificial Stromnull ⁇ passage and thus allows power separation. If the mechanical switching device 16 has interrupted the current, the control of the semiconductor components can be switched off. In the further course of the current commutes first to the resonant circuit 20 and the capacitive component 24 is charged.
- FIGS. 2 and 3 show further embodiments of the DC switching device 10, which substantially coincide with the embodiment of FIG. 1, so that in Wei ⁇ n only on the differences to be discussed.
- semiconductor components 38, 40 are prerequisite, which can respectively block the full DC voltage.
- 40 is a unipolar DC switching input ⁇ device 10 can be constructed with two semiconductor devices 38.
- the DC switching device 10 has a medium or high voltage
- the LC circuit 22 is taktiert ei ⁇ ne réelle con- between the two semiconductor devices 38, 40 and on the other hand behind the mechanical switching device sixteenth
- the surge arrester 30 realized, for example, with MO varistors
- the excitation resonant circuit 48 and the transformer 50 can be saved.
- the mechanical switching device In normal operation, the mechanical switching device is 16 ge ⁇ closed and none of the two semiconductor devices 38, 40 is driven. Again, the passage Losses on the low ohmic losses of the closed mechanical switching device 16.
- Switching device 16 a sufficiently large distance from each other, so that the switching device 16 can isolate the applied DC voltage after successful Stromunterbre ⁇ ching, the semiconductor devices 38, 40 alternately switched on and off (meaningfully, first component 40 and component 38 off) ,
- the switching frequency is selected as ⁇ at (by the control and / or regulating device 52) so that the (active) oscillatory circuit 20 resonates
- Fig. 3 makes sense.
- the semiconductor components are te 38, 40, 60, 62 and the LC circuit 22 for forming the running of the switching device 16 resonant circuit 20 in egg ⁇ ner bridge circuit 64 interconnected.
- the first two semiconductor devices 38, 40 are arranged between the forward and return conductors of the current path 12 in front of the mechanical switching device 16 ⁇ .
- the LC circuit 22 is contacted, on the one hand, between the semiconductor components 38, 40, and, on the other hand, between the two other semiconductor components 60, 62, which are arranged behind the mechanical switching device 16.
- Parallel to the mechanical switching device 16, the surge arrester 30 (realized, for example, with MO varistors) is also connected here to protect against overvoltages.
- the excitation resonant circuit 48 and the transformer 50 can be saved.
- the diagonal driving two semiconductor components of the LC circuit may, for example, (for example, 38, 62 and or 40, 60), the capacitive component 24 are precharged 22 via the DC power to the switching case directly a current oscillation with maxima ⁇ ler amplitude to reach and to be able to interrupt fault currents more quickly.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015216769.0A DE102015216769A1 (en) | 2015-09-02 | 2015-09-02 | DC switchgear |
PCT/EP2016/068482 WO2017036710A1 (en) | 2015-09-02 | 2016-08-03 | Direct-current switching device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3317891A1 true EP3317891A1 (en) | 2018-05-09 |
EP3317891B1 EP3317891B1 (en) | 2019-10-02 |
Family
ID=56684622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16751241.7A Active EP3317891B1 (en) | 2015-09-02 | 2016-08-03 | Direct-current switching device |
Country Status (5)
Country | Link |
---|---|
US (1) | US10490365B2 (en) |
EP (1) | EP3317891B1 (en) |
CN (1) | CN107924783A (en) |
DE (1) | DE102015216769A1 (en) |
WO (1) | WO2017036710A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017101451A1 (en) * | 2017-01-25 | 2018-07-26 | Eaton Industries (Austria) Gmbh | Low-voltage protection device |
KR20200144104A (en) | 2018-03-28 | 2020-12-28 | 졸텍 코포레이션 | Electrically conductive adhesive |
DE102018214000B4 (en) * | 2018-08-20 | 2022-01-20 | Siemens Energy Global GmbH & Co. KG | DC switching device and its use |
CN114709800B (en) * | 2022-04-28 | 2023-06-30 | 西安交通大学 | Compact direct current breaker sharing branch circuits and control method thereof |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6065411A (en) | 1983-09-21 | 1985-04-15 | 株式会社日立製作所 | Line charging type dc breaker |
JPS60140617A (en) * | 1983-12-27 | 1985-07-25 | 株式会社東芝 | Dc breaker |
EP0534379A3 (en) * | 1991-09-27 | 1993-09-08 | Yamaha Corporation | Power supply circuit |
SE514827C2 (en) * | 1993-12-09 | 2001-04-30 | Abb Ab | DC switch for high power |
US5793586A (en) * | 1996-10-25 | 1998-08-11 | The United States Of America As Represented By The United States Department Of Energy | Hybrid high direct current circuit interrupter |
CN1717857A (en) * | 2002-11-29 | 2006-01-04 | 索尼株式会社 | Switching power supply circuit |
WO2011141055A1 (en) | 2010-05-11 | 2011-11-17 | Abb Technology Ag | A high voltage dc breaker apparatus |
EP2523204B1 (en) * | 2011-05-12 | 2019-09-04 | ABB Schweiz AG | Circuit arrangement and method for interrupting a current flow in a DC current path |
CN102655319B (en) * | 2012-04-26 | 2014-11-12 | 华中科技大学 | Direct-current circuit breaker capable of reducing forward superimposed current |
WO2014166528A1 (en) * | 2013-04-09 | 2014-10-16 | Abb Technology Ltd | Circuit breaking arrangement |
DE102013213602A1 (en) * | 2013-07-11 | 2015-01-15 | Siemens Aktiengesellschaft | DC switching apparatus |
KR101521545B1 (en) * | 2013-10-07 | 2015-05-19 | 한국전기연구원 | Device and method to interrupt high voltage direct current |
US9948089B2 (en) * | 2013-12-11 | 2018-04-17 | Mitsubishi Electric Corporation | DC circuit breaker device |
KR101679722B1 (en) * | 2013-12-31 | 2016-11-25 | 주식회사 효성 | Direct current circuit breaker |
ES2676048T3 (en) * | 2014-06-30 | 2018-07-16 | Scibreak Ab | Arrangement, system and current interruption method |
US9742185B2 (en) * | 2015-04-28 | 2017-08-22 | General Electric Company | DC circuit breaker and method of use |
-
2015
- 2015-09-02 DE DE102015216769.0A patent/DE102015216769A1/en not_active Withdrawn
-
2016
- 2016-08-03 WO PCT/EP2016/068482 patent/WO2017036710A1/en active Application Filing
- 2016-08-03 CN CN201680050606.3A patent/CN107924783A/en active Pending
- 2016-08-03 US US15/752,970 patent/US10490365B2/en active Active
- 2016-08-03 EP EP16751241.7A patent/EP3317891B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3317891B1 (en) | 2019-10-02 |
DE102015216769A1 (en) | 2017-03-02 |
US20180226208A1 (en) | 2018-08-09 |
US10490365B2 (en) | 2019-11-26 |
WO2017036710A1 (en) | 2017-03-09 |
CN107924783A (en) | 2018-04-17 |
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