EA201401340A1 - METHOD FOR SYMMETRICATION OF PHASE CURRENTS OF THREE-PHASE FOUR-WIRE LINES AND DEVICE FOR ITS IMPLEMENTATION - Google Patents
METHOD FOR SYMMETRICATION OF PHASE CURRENTS OF THREE-PHASE FOUR-WIRE LINES AND DEVICE FOR ITS IMPLEMENTATIONInfo
- Publication number
- EA201401340A1 EA201401340A1 EA201401340A EA201401340A EA201401340A1 EA 201401340 A1 EA201401340 A1 EA 201401340A1 EA 201401340 A EA201401340 A EA 201401340A EA 201401340 A EA201401340 A EA 201401340A EA 201401340 A1 EA201401340 A1 EA 201401340A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- phase
- loaded
- line
- current
- active power
- Prior art date
Links
Classifications
-
- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Способ и устройство относятся к области электротехники и могут быть использованы для автоматического симметрирования нагрузки линий трехфазной четырехпроводной сети, по меньшей мере часть потребителей которой являются однофазными. Техническим результатом предлагаемого решения является снижение уровня несимметрии, при котором осуществляется симметрирование фазных токов, а также упрощение реализации и повышение эксплуатационной надежности. Это достигается за счет того, что в способе, предполагающем переключение по меньшей мере части однофазных нагрузок к наименее загруженной фазе, для каждой из переключаемых однофазных нагрузок в месте ее присоединения к линии определяют значения активной мощности, соответствующие каждому из фазных напряжений и току нулевого провода линии без учета тока однофазной нагрузки, причем в качестве наименее нагруженной принимают фазу линии с максимальным значением модуля активной мощности, знак которого противоположен знаку активной мощности наиболее нагруженной фазы. Реализующее способ устройство содержит блок (1) коммутации, четыре входа (7, 8, 9 и 10) которого являются входами устройства и служат для подключения к фазным F1, F2, F3 и нулевому N проводам линии, а два (11) и (12) выхода блока коммутации служат выходами устройства и предназначены для подключения однофазной нагрузки. Устройство также содержит датчик (3) тока, подключаемый к нулевому N проводу линии тока, и первый (4) второй (5) и третий (6) датчики фазных напряжений, подключенные к входам устройства, а также блок (2) определения наименее нагруженной фазы, выходная шина (20) которого соединена с управляющим входом блок (1) коммутации. Блок (2) определения наименееThe method and the device relate to the field of electrical engineering and can be used to automatically balance load lines of a three-phase four-wire network, at least some of whose consumers are single-phase. The technical result of the proposed solution is to reduce the level of asymmetry, at which the phase currents are balanced, and the implementation is simplified and operational reliability is increased. This is achieved due to the fact that in the method that involves switching at least part of single-phase loads to the least loaded phase, for each of the switched single-phase loads at the point of its connection to the line, determine the active power values corresponding to each of the phase voltages and the neutral wire current without taking into account the single-phase load current, the line phase with the maximum value of the active power module, whose sign is opposite to the active power sign, is taken as the least loaded one most loaded phase. The device implementing the method contains a switching unit (1), the four inputs (7, 8, 9 and 10) of which are the device inputs and are used to connect to the phase F1, F2, F3 and zero N line wires, and two (11) and (12 ) the outputs of the switching unit serve as the outputs of the device and are designed to connect a single-phase load. The device also contains a current sensor (3) connected to the zero N wire of the current line and the first (4) second (5) and third (6) phase voltage sensors connected to the device inputs, as well as the least loaded phase determination unit (2) , the output bus (20) of which is connected to the control input of the switching unit (1). Block (2) definitions least
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2013158802/07A RU2548656C1 (en) | 2013-12-27 | 2013-12-27 | Method of balancing of phase currents of three-phase four-wire line and device for its implementation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA201401340A1 true EA201401340A1 (en) | 2015-07-30 |
| EA028431B1 EA028431B1 (en) | 2017-11-30 |
Family
ID=53289430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA201401340A EA028431B1 (en) | 2013-12-27 | 2014-12-26 | Method for balancing phase currents of three-phase four-wire line and device for its implementation |
Country Status (2)
| Country | Link |
|---|---|
| EA (1) | EA028431B1 (en) |
| RU (1) | RU2548656C1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882879A (en) * | 2015-05-12 | 2015-09-02 | 周帅 | Single-phase load control device and method |
| RU2686480C2 (en) * | 2017-04-27 | 2019-04-29 | Общество с ограниченной ответственностью ООО "НИР Энерго" | Method for balancing phase voltages of a network and device for its implementation |
| RU2678190C1 (en) * | 2017-07-31 | 2019-01-24 | Анастасия Анатольевна Новикова | METHOD FOR SYMMETRIZING CURRENTS OF A THREE-PHASE NETWORK 0,4 kV |
| RU181460U1 (en) * | 2018-04-18 | 2018-07-16 | Акционерное общество "Корпорация "Стратегические пункты управления" АО "Корпорация "СПУ-ЦКБ ТМ" | A device for balancing voltage in a four-wire high-voltage network |
| RU2719632C1 (en) * | 2018-11-13 | 2020-04-21 | ОАО "Сетевая компания" | Device for automatic compensation of capacitance currents with balancing of phase voltages of network |
| RU210337U1 (en) * | 2020-12-14 | 2022-04-08 | Публичное акционерное общество "Россети Центр и Приволжье" | LOAD BALING DEVICE |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1034119A1 (en) * | 1982-03-24 | 1983-08-07 | Научно-исследовательский институт энергетики и автоматики АН УзССР | Method of connecting single-phase balancing load |
| SU1257748A1 (en) * | 1985-01-02 | 1986-09-15 | Сибирский научно-исследовательский институт механизации и электрификации сельского хозяйства | Method of controlling the switching of single-phase symmetrizing load |
| GB2449651A (en) * | 2007-05-29 | 2008-12-03 | Ultra Electronics Ltd | Power control system to reduce imbalances |
-
2013
- 2013-12-27 RU RU2013158802/07A patent/RU2548656C1/en active
-
2014
- 2014-12-26 EA EA201401340A patent/EA028431B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EA028431B1 (en) | 2017-11-30 |
| RU2548656C1 (en) | 2015-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EA201401340A1 (en) | METHOD FOR SYMMETRICATION OF PHASE CURRENTS OF THREE-PHASE FOUR-WIRE LINES AND DEVICE FOR ITS IMPLEMENTATION | |
| WO2016176318A3 (en) | Smart power node | |
| AU2016204594B1 (en) | Cascaded multilevel converter self-test system and self-test method for the same | |
| MX2015016946A (en) | Methods and devices for controlling active power flow in a three-phase modular multilevel converter. | |
| GB2518853A8 (en) | Voltage source converter | |
| MX2010002647A (en) | Medium voltage inverter system. | |
| GB201306646D0 (en) | Variable voltage drive controller, system and method | |
| BRPI0804505A2 (en) | transformer that automatically adjusts the voltage of three phase power supply | |
| Aihara et al. | A study on the effect of the Scott transformer on the three-phase unbalance in distribution network with single-phase generators | |
| RU2510070C1 (en) | Method to connect three-phase loads | |
| RU2011144707A (en) | DEVICE FOR MANAGING THREE-PHASE AND SINGLE-PHASE LOADS ON A POWER FOUR-WIRE NETWORK | |
| RU2012147667A (en) | METHOD FOR MATCHING A HETEROGENEOUS FOUR WIRE NONSymmetric ELECTRIC TRANSMISSION LINE WITH ELECTRIC LOAD | |
| RU2612649C1 (en) | Three-phase balun | |
| RU2419956C1 (en) | Alternating current power supply system | |
| WO2014095297A3 (en) | Bridge leg | |
| RU2459337C1 (en) | Three-phase filter balancing device | |
| UA117704U (en) | THREE PHASE ELECTRICAL NETWORK | |
| RU2013121707A (en) | METHOD FOR SWITCHING ON THE TRACTION SUBSTATION TRANSFORMER | |
| RU2558697C1 (en) | Four-phase five-wire power transmission line | |
| Kizurov | Symmetry of single-phase loads in four-wire three-phase networks of alternating sinusoidal current | |
| RU2706645C1 (en) | Three-phase switching capacitor unit | |
| TW200729684A (en) | Power control system capable of balancing output currents | |
| RU2012128075A (en) | THREE PHASE SYMMETRING DEVICE | |
| RU2013112037A (en) | AC VOLTAGE REGULATOR | |
| RU2561505C1 (en) | Voltage imbalance amplitude control unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ KG TJ TM RU |