EP3698458A1 - Stromrichterstation und deren betrieb - Google Patents
Stromrichterstation und deren betriebInfo
- Publication number
- EP3698458A1 EP3698458A1 EP17816484.4A EP17816484A EP3698458A1 EP 3698458 A1 EP3698458 A1 EP 3698458A1 EP 17816484 A EP17816484 A EP 17816484A EP 3698458 A1 EP3698458 A1 EP 3698458A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- power
- converter
- station
- converters
- network
- 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.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims description 32
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/75—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/757—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/7575—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only for high voltage direct transmission link
-
- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- 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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/75—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/77—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means arranged for operation in parallel
-
- 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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4266—Arrangements for improving power factor of AC input using passive elements
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- 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]
Definitions
- the invention relates to a converter station with two line-commutated converters and a method for their
- HVDC high voltage direct current
- a monopolar HVDC link has only one high-voltage line, at which a high voltage is applied to a ground potential.
- a bipolar HVDC line has two high-voltage lines, where at one
- HVDC track High voltage line against the earth potential negative high voltage is applied.
- the parts of an HVDC track which are assigned to the same voltage polarity are referred to below as poles of the HVDC track.
- a monopolar HVDC link thus has one pole, a bipolar HVDC link has two poles.
- a converter station is arranged between the AC grid and one end of the HVDC link, in which the
- Mains-controlled power converters can not be set independently of each other without further ado.
- line-commutated power converters can therefore be used without changing the
- the invention is based on the object, in particular with regard to the reactive power exchange with a
- AC power system to provide improved converter station on a bipolar high-voltage DC transmission line and an improved reactive power exchange method for the operation of such a converter station.
- the object is achieved by a method having the features of claim 1 and by a converter station with the features of claim 5.
- Converter station with two line-commutated converters, the two converters in an anti-parallel circuit with the same voltage polarity of a bipolar
- High voltage DC transmission link electrically connected.
- One of the converters is operated as a rectifier on an AC mains
- the other power converters is operated as an inverter to the AC mains and one between the converter station and the
- the invention thus provides monopolar operation of the two power converters of the converter station in an anti-parallel circuit, that is, on the same voltage polarity of a bipolar HVDC route.
- One of the converters is operated as a rectifier to the AC mains, that is, this converter takes active power from the
- the other power converter is called
- the station reactive power exchanged by the converter station with the alternating current network is identical to that for both converters
- the invention makes use of the fact that the station active power, which exchanges the converter station with the AC network, is the difference between the converter converter outputs of the two
- Power converter is because one of the power converters is operated as a rectifier and the other power converter is operated as an inverter, while the station reactive power is the sum of the converter reactive power. Since the power converters are operated with the same power conversion efficiency, the converter efficiencies cancel each other out neglecting the losses, so that the
- Station active power which is exchanged between the converter station and the AC network, disappears.
- each converter reactive power depends on a characteristic curve of the respective converter active power, the Stations reactive power by changing the
- the invention thus enables in addition to the conventional
- Inverter and are operated at different poles of the HVDC line, another mode of operation in which no station active power is exchanged between the converter station and the AC mains, but with the converter station a network system service
- Reactive power compensation is provided, similar to self-commutated power converters or a
- SVC Static Var Compensator
- Reactive power setpoint is set. This allows the station blind power through the active power specification for the converter output of the power converter to a
- Converter station and the AC network is changed by connecting or disconnecting at least one AC filter to a grid connection of the converter station to the AC mains.
- a reactive power jump of the reactive power exchange between the converter station and the AC network caused by a connection or disconnection of at least one AC filter can be achieved by a the reactive power jump counteracting change in
- Active power input for the converter performance can be reduced at the time of connecting or disconnecting the at least one AC filter.
- the reactive power exchange between the converter station and the AC network can be additionally controlled by switching AC filters on or off. Without further action causes the switching on and off of
- This embodiment of the invention makes use of the fact that the opposite operation of the power converters makes it possible for the station blind power through the
- a power converter station comprises two line-commutated power converters, each optionally as a rectifier or as an inverter on a
- Voltage polarity of a bipolar high voltage DC transmission link are electrically connected, and a control unit, which is set up between the
- Converter station and the AC network replaced station blind power by an identical for both converters active power input for
- Inverters and the AC mains are exchanged to control, if both power converters in one
- Antiparallelscrien are connected to the same voltage polarity of the high voltage DC transmission link.
- a converter station according to the invention makes it possible to carry out the method according to the invention with the advantages mentioned above. Compared to a conventional one
- Converter station with line-commutated converters only a circuit that allows the anti-parallelization of the two converters, and a control unit, the control of the invention
- Converter output of the antiparallel switched converter is set up needed. If necessary, already existing switching devices of a converter station can be used for the circuit, wherein
- the device of the control unit can be any type of circuitry.
- the device of the control unit can be any type of circuitry.
- the invention may therefore also be used to upgrade existing bipolar converter stations with line-commutated converters.
- a further embodiment of the invention provides that the AC network is three-phase.
- each power converter may, for example twelve in one of two
- each valve unit may in particular comprise at least one thyristor.
- each power converter can be connected by a transformer unit with the AC power, the one for each phase of the AC power supply
- Primary winding a first secondary winding and a second secondary winding, wherein the primary windings are connected by a star connection, the first secondary windings are connected by a delta connection and the second secondary windings are connected by a star connection.
- each winding end of each first secondary winding is connected to a first six-pulse bridge circuit of a power converter and / or one of a star point of the star connection remote winding end of each second secondary winding is connected to a second six-pulse bridge circuit of
- AC grids and / or power converters of the aforementioned type is limited, but for example, for single-phase AC grids and / or six-pulse converters
- FIG. 1 shows a circuit diagram of a converter station according to the prior art
- FIG. 2 shows schematically two converter stations, which are connected via an HVDC route
- FIG. 3 shows a network connection of a converter station to an AC network
- AC filter, 6 shows a third embodiment of a
- the converter station 1 shows a circuit diagram of a converter station 1 according to the prior art for energy transmission via a bipolar HVDC path 30.
- Each power converter 4, 5 has twelve valve units 7 which are arranged in a twelve-pulse bridge circuit 26 consisting of two six-pulse bridge circuits 26.2, 26.2.
- Each valve unit 7 has one or more thyristors connected in series or in parallel.
- a surge arrester 9 is connected in parallel.
- Each power converter 4, 5 is connected by a
- each transformer unit 11 has a primary winding 13, a first secondary winding 15 and a second secondary winding 17 for each phase of the AC network 27.
- the primary windings 11 of each transformer unit 11 are connected to each other by a star connection
- the first secondary windings 15 are connected to each other by a delta connection
- the second secondary windings 17 are connected to each other by a star connection.
- Each winding end of each first secondary winding 15 is connected to one of six valve units 7
- each second secondary winding 17 facing away from a star point 19 of the star connection is connected to one of the other six valve units 7 of the respective
- Power converters 4, 5 formed second six-pulse bridge circuit 26.2 connected.
- a first power converter 4 is connected to a first pole 21 of the HVDC track 30.
- the second six-pulse bridge circuit 26.2 of the first power converter 4 is connected to the first pole 21 of the HVDC track 30.
- Power converter 5 is connected to the second pole 23 of the HVDC track 30. For this, the second six-pulse
- Bridge circuit 26.2 of the second power converter 5 connected to the second pole 23 of the HVDC track 30. Further, the two power converters 4, 5 via a medium voltage
- FIG. 2 schematically shows two converter stations 1, 2 which are connected to one another via a HVDC link 30 on the DC side.
- AC side is a first
- Converter station 1 is connected to a first AC mains 27, and the second converter station 2 is connected to a second AC network 28.
- the HVDC path 30 is formed bipolar with a first pole 21 and a second pole 23 and high voltage lines 32, 34 between the two converter stations 1, 2.
- Each converter station 1, 2 is like that in FIG. 1
- Converter station 1, 2 via a pole connecting line 36 are connected to each other.
- the outputs of a converter station 1, 2 which are each connected to a pole 21, 23 can also be connected, for example, via (not shown).
- Pole connection line 36 of each converter station 1, 2 is further via a reconfiguration switch 40 with the
- Converter stations 1, 2 are over a
- Converter station 1, 2, 3 has a control unit 46, through which the valve units 7 of their power converters 4, 5 are driven.
- Pole connection line 36 connected to each other and separated from the HVDC route 30.
- the converter stations 1, 2 are thus each monopolar and in a stand-alone operation, that is, at the same,spolartician and decoupled from the HVDC line 30, operated.
- one of the power converters 4, 5 will be any one of the power converters 4, 5. Further, one of the power converters 4, 5 will be any one of the power converters 4, 5.
- Converter station 1, 2 operated as an inverter, that is, it transmits a converter active power PI, P2 in the AC network connected to him 27, 28.
- the other power converter 5 of the converter station 1, 2 is called
- Rectifier operated, that is, he takes the
- Power converter 4, 5 each converter station 1, 2 with
- Power converter 4 a first converter station 1 as
- Inverter operated, that is, he transmits the
- Converter active power PI in the first AC mains 27 The second converter 5 of the first converter station 1 is operated as a rectifier, that is, it takes the converter active power PI from the first
- the first power converter 4 of the second power converter station 2 is operated as a rectifier, that is, it takes the power converter active power P2 from the second
- the second power converter 5 of the second power converter station 2 is operated as an inverter, that is to say it transmits the power converter active power P2 into the second AC power network 28.
- Each converter station 1, 2 exchanges with the
- Station blind power of the first converter station 1 and Q2 denotes the station blind power of the second
- the station blind power Ql of the first converter station 1 is the sum of
- Converter power ratings Qll, Q12 which are respectively exchanged between the converters 4, 5 of the first converter station 1 and the first AC network 27.
- the station blind power Q2 of the second converter station 2 is the sum of
- Converter power ratings Q21, Q22 which are respectively exchanged between the power converters 4, 5 of the second converter station 2 and the second AC network 28.
- the Direction of each active and reactive power flow is shown in Figure 2 by an arrow. If the two
- the converter active power PI, P2 of the power converters 4, 5 of a converter station 1, 2 are by means of
- Control unit 46 of the converter station 1, 2 controlled by an identical for both converters 4, 5 active power specification for the converter active power PI, P2. Because the
- Power converter active power PI, P2 of the power converters 4, 5 of the converter station 1, 2 are controlled.
- the station blind power Ql, Q2 can be increased by increasing the power converter efficiencies PI, P2.
- the method according to the invention therefore makes it possible, with a converter station 1,
- the network system service can of course also be provided with only one of the converter stations 1, 2 for the AC network 27, 28 connected to it, the other converter station 1, 2 being switched off, for example is or exchanges electrical power with another (not shown) converter station via a HVDC line.
- FIG. 3 shows an embodiment of a
- Power supply 50 a converter station 1 to a
- the power converter station 1 is like one of the power converter stations 1, 2 shown in FIG.
- the power connection 50 has several
- Circuit breaker 56 are interconnected. By switching on and off of AC filters 54, an offset of the reactive power exchange between the converter station 1 and the AC network 27 is changed. It can be provided that a reactive power jump of
- Switching off at least one AC filter 54 is caused by the reactive power jump counteracting change in the converter performance PI of the converters 4, 5 of the converter station 1 at the time of switching on or off the at least one AC filter 54 is reduced.
- Power converter active power PI changed so that this change compensates for the reactive power jump at least partially.
- FIGS. 4 to 6 show circuit diagrams of various
- FIG. 4 shows an AC filter 54 with a capacitor 60 and a parallel connection of a coil 62 and a capacitor connected in series with the capacitor 60
- AC filter 54 also includes a grounded filter surge arrester 66.
- FIG. 5 shows an AC filter 54, which differs from the AC filter 54 shown in FIG. 4 only in that a series connection of a coil 62 and a resonant circuit 68 runs parallel to the resistor 64
- FIG. 6 shows an AC filter 54, which differs from the AC filter 54 shown in FIG. 4 only in that a series connection of a coil 62 and two oscillating circuits 68 runs parallel to the resistor 64
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2017/080104 WO2019101305A1 (de) | 2017-11-22 | 2017-11-22 | Stromrichterstation und deren betrieb |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3698458A1 true EP3698458A1 (de) | 2020-08-26 |
Family
ID=60702604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17816484.4A Withdrawn EP3698458A1 (de) | 2017-11-22 | 2017-11-22 | Stromrichterstation und deren betrieb |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3698458A1 (de) |
WO (1) | WO2019101305A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110912173B (zh) * | 2019-11-13 | 2023-10-10 | 国网天津市电力公司 | 一种vsc直流电网控制方法 |
CN113659577B (zh) * | 2021-08-19 | 2022-09-06 | 中国南方电网有限责任公司超高压输电公司昆明局 | 高压换流站及交流滤波器布置结构 |
CN113890076A (zh) * | 2021-08-26 | 2022-01-04 | 国家电网公司西南分部 | 一种提升直流承载能力的直流控制方法 |
CN114362230B (zh) * | 2021-12-09 | 2024-05-07 | 南方电网科学研究院有限责任公司 | 共用接地装置的多变压器并联柔直换流站及其投切方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3829759A (en) * | 1973-01-18 | 1974-08-13 | Asea Ab | Means for generating reactive power |
US4013937A (en) * | 1974-07-22 | 1977-03-22 | Westinghouse Electric Corporation | Naturally commutated cycloconverter with controlled input displacement power factor |
EP0290914B1 (de) * | 1987-05-15 | 1991-12-04 | Siemens Aktiengesellschaft | Zustandssignalbildung zur Anzeige des Überganges in die Betriebsart "Bypass" bei einer Einrichtung zur Hochspannungsgleichstromübertragung |
JPH11252790A (ja) * | 1998-02-27 | 1999-09-17 | Mitsubishi Electric Corp | 直流送電方法 |
-
2017
- 2017-11-22 EP EP17816484.4A patent/EP3698458A1/de not_active Withdrawn
- 2017-11-22 WO PCT/EP2017/080104 patent/WO2019101305A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
WO2019101305A1 (de) | 2019-05-31 |
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