CN108054785A - A kind of circuit for preventing wind power plant island-grid - Google Patents
A kind of circuit for preventing wind power plant island-grid Download PDFInfo
- Publication number
- CN108054785A CN108054785A CN201810079866.4A CN201810079866A CN108054785A CN 108054785 A CN108054785 A CN 108054785A CN 201810079866 A CN201810079866 A CN 201810079866A CN 108054785 A CN108054785 A CN 108054785A
- Authority
- CN
- China
- Prior art keywords
- auxiliary contact
- contact module
- relay
- grid
- voltage
- 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.)
- Pending
Links
- 230000005611 electricity Effects 0.000 claims description 6
- 230000006837 decompression Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H02J3/386—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The embodiment of the invention discloses a kind of circuits for preventing wind power plant island-grid.Circuit of the embodiment of the present invention includes power module, sends out contactor auxiliary contact module, voltage transformer voltage relay auxiliary contact module and intermediate relay, contactor auxiliary contact module is sent out in the anode connection of the power module, send out contactor auxiliary contact module connection voltage transformer voltage relay auxiliary contact module, voltage transformer voltage relay auxiliary contact module connects intermediate relay, and intermediate relay connects the cathode of power module.The embodiment of the present invention can solve wind power plant and send out circuit when breaking down tripping decompression, and reliably excision collects electric line for protection, prevents island-grid.
Description
Technical field
The present invention relates to technical field of wind power, more particularly to a kind of circuit for preventing wind power plant island-grid.
Background technology
Island-grid refers to by the locality power grid of the mutual joint mapping of multigroup compact electrical generating systems, electricity generation system and negative
Lotus forms the Isolated Network System of the operation that can rely on oneself.
One local electric system or several local electric system are coupled through points of common connection, and with remaining electric system
In a kind of electrically separated operation of power networks state.Its basic characteristics is that the fluctuation range of voltage and frequency is larger, is transported by load
Capable influence is more apparent, and majority operates in low pressure, low-frequency range.Compared with electric system of networking, isolated island is due to various frequency modulation
Means limit and the control of reactive power compensating means deficiency, and static stability and dynamic stability are all poor, active uneven generation
When generally by the long period generation adjustment could recover in addition the frequency of occurrences collapse and collapse of voltage phenomenon.Original area
When domain power grid is combined, the characteristic of interacted system is comprehensively analyzed, solution is classified as anti-locking system in case of a fault
Islet operation, after off-the-line, the power grid of active surplus raises frequency, and high frequency is caused to cut generator control unit action, is being had
The serious region of work(vacancy, can cause collapse of frequency, cause the power failure phenomenon of large area.
Wind power plant is sent out circuit and a little is caused after line tripping in the case of relevant parameter cooperation breaking down at present,
There may be Wind turbines, off-grid does not run to form island-grid under the support of reactive power compensator, and the time is far more than low electricity
Crossing time is pressed, this phenomenon will likely can expand fault coverage.
The content of the invention
An embodiment of the present invention provides a kind of circuits for preventing wind power plant island-grid, can solve wind power plant submitting circuit and exist
During the tripping decompression that breaks down, reliably excision collects electric line for protection, prevents island-grid.
In a first aspect, the application provides a kind of circuit for preventing wind power plant island-grid, the circuit include power module,
Send out contactor auxiliary contact module, voltage transformer voltage relay auxiliary contact module and intermediate relay, the electricity
The anode connection submitting contactor auxiliary contact module of source module, the submitting contactor auxiliary contact module connection
The voltage transformer voltage relay auxiliary contact module, the voltage transformer voltage relay auxiliary contact module connection
The intermediate relay, the intermediate relay connect the cathode of the power module.
Further, the voltage transformer voltage relay auxiliary contact module is bus-bar potential transformer voltage relay
Device auxiliary contact module, alternatively, sending out line voltage transformer voltage relay auxiliary contact module.
Further, the bus-bar potential transformer voltage relay auxiliary contact module includes first line mutual induction of voltage
Device, the first line voltage transformer connection submitting contactor auxiliary contact module and the intermediate relay.
Further, the line voltage transformer voltage relay auxiliary contact module of sending out includes the First Line of series connection
Road voltage transformer and the second line voltage transformer, the first line voltage transformer connection submitting contactor are auxiliary
Adjuvant grafting point module, second line voltage transformer connect the intermediate relay.
Further, the submitting contactor auxiliary contact module includes the first breaker, first breaker point
The anode of the power module and the voltage transformer voltage relay auxiliary contact module are not connected.
Further, the contactor auxiliary contact module of sending out includes the first breaker and the second open circuit of series connection
Device, the anode of the first breaker connection power module, second breaker connect the voltage transformer voltage relay
Device auxiliary contact module.
Further, the intermediate relay includes three jump current collection routes and a spare jump current collection route.
Further, the intermediate relay further includes a relay coil.
The embodiment of the present invention prevents the circuit of wind power plant island-grid from including power module, sending out contactor auxiliary contact
Electricity is sent out in module, voltage transformer voltage relay auxiliary contact module and intermediate relay, the anode connection of the power module
Way switch auxiliary contact module sends out contactor auxiliary contact module connection voltage transformer voltage relay auxiliary contact mould
Block, voltage transformer voltage relay auxiliary contact module connection intermediate relay, intermediate relay connection power module are born
Pole.The embodiment of the present invention can solve wind power plant and send out circuit when breaking down tripping decompression, and reliably excision collects electric wire for protection
Road prevents island-grid.
Description of the drawings
Fig. 1 is one embodiment schematic diagram for the circuit that wind power plant island-grid is prevented in the embodiment of the present invention；
Fig. 2 is another embodiment schematic diagram for the circuit that wind power plant island-grid is prevented in the embodiment of the present invention；
Fig. 3 is another embodiment schematic diagram for the circuit that wind power plant island-grid is prevented in the embodiment of the present invention；
Fig. 4 is the wiring signal of the intermediate relay in the circuit for prevented in the embodiment of the present invention wind power plant island-grid
Figure.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction in the embodiment of the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work should all belong to the model that the present invention protects
It encloses.
The (if present)s such as term " first ", " second " in description and claims of this specification and above-mentioned attached drawing
It is the object for distinguishing similar, without being used to describe specific order or precedence.It should be appreciated that the number so used
According to can exchange in the appropriate case, so as to the embodiments described herein can with except the content for illustrating or describing herein with
Outer order is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover non-exclusive bag
Contain, for example, containing the process of series of steps or unit, method, system, product or equipment is not necessarily limited to what is clearly listed
Those steps or unit, but may include not listing clearly or intrinsic for these processes, method, product or equipment
Other steps or unit.
Referring to Fig. 1, providing a kind of circuit for preventing wind power plant island-grid in the embodiment of the present invention, the circuit includes
Power module sends out contactor auxiliary contact module, voltage transformer voltage relay auxiliary contact module and intermediate relay
Device, the anode connection submitting contactor auxiliary contact module of the power module, the submitting contactor auxiliary connect
Point module connects the voltage transformer voltage relay auxiliary contact module, and the voltage transformer voltage relay auxiliary connects
Point module connects the intermediate relay, and the intermediate relay connects the cathode of the power module.
Fig. 2 and Fig. 3 is the two specific embodiments signal for the circuit that wind power plant island-grid is prevented in the embodiment of the present invention
Figure, wherein, 1JD represents intermediate relay, and 1DL is the first breaker, and 2DL is the second breaker, and 1YJ is mutual for first line voltage
Sensor, 2YJ are the second line voltage transformer, and 101 be the anode of the power module, and 102 be the cathode of the power module,
As shown in Figure 2 and Figure 3, the voltage transformer voltage relay auxiliary contact module is bus-bar potential transformer voltage relay
Auxiliary contact module, alternatively, sending out line voltage transformer voltage relay auxiliary contact module.
As shown in Fig. 2, the bus-bar potential transformer voltage relay auxiliary contact module only includes first line voltage
Mutual inductor 1YJ, the first line voltage transformer 1YJ connections are described to send out contactor auxiliary contact module and the centre
Relay 1JD.
As shown in figure 3, the line voltage transformer voltage relay auxiliary contact module of sending out includes the first of series connection
Line voltage transformer 1YJ and the second line voltage transformer 2YJ is sent described in the first line voltage transformer 1YJ connections
Go out contactor auxiliary contact module, the second line voltage transformer 2YJ connections intermediate relay 1JD.
Further, the submitting contactor auxiliary contact module includes the first breaker 1DL, first breaker
1DL connects the anode 101 of the power module and the voltage transformer voltage relay auxiliary contact module respectively.
Further, the first breaker 1DL and second of the contactor auxiliary contact module including series connection that send out breaks
Road device 2DL, the anode 101 of the first breaker 1DL connection power modules, the second breaker 2DL connections voltage
Mutual inductor voltage relay auxiliary contact module.
When it is that single loopback goes out line mode that wind power plant, which sends out circuit, the submitting contactor auxiliary contact module includes
First breaker 1DL, the voltage transformer voltage relay auxiliary contact module can be bus-bar potential transformer voltage after
Electric appliance auxiliary contact module, alternatively, sending out line voltage transformer voltage relay auxiliary contact module, i.e., described mutual induction of voltage
Device voltage relay auxiliary contact module can include a line voltage transformer (such as 1YJ) or two line voltage distribution mutual inductances
Device (such as 1YJ and 2YJ).
When wind power plant, which sends out circuit, sends out line mode for double back, the submitting contactor auxiliary contact module includes
First breaker 1DL and the second breaker 2DL, the voltage transformer voltage relay auxiliary contact module are only submitting line
Road voltage transformer voltage relay auxiliary contact module, i.e., including two line voltage transformers (such as 1YJ and 2YJ).
As shown in figure 4, be the wiring schematic diagram of intermediate relay, wherein, representated by Fig. 4 right part of flg is this intermediate relay
The coil of device, what Fig. 4 left hand views represented is the auxiliary contact of this intermediate relay, and 1JD-1,1JD-2,1JD-3,1JD-4 are represented
Four switches in the intermediate relay, the intermediate relay include three and jump current collection route and a spare jump collector
Line.Further, the intermediate relay further includes a relay coil.
The embodiment of the present invention prevents the circuit of wind power plant island-grid from including power module, sending out contactor auxiliary contact
Electricity is sent out in module, voltage transformer voltage relay auxiliary contact module and intermediate relay, the anode connection of the power module
Way switch auxiliary contact module sends out contactor auxiliary contact module connection voltage transformer voltage relay auxiliary contact mould
Block, voltage transformer voltage relay auxiliary contact module connection intermediate relay, intermediate relay connection power module are born
Pole.The embodiment of the present invention can solve wind power plant and send out circuit when breaking down tripping decompression, and reliably excision collects electric wire for protection
Road prevents island-grid.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit may be referred to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
Division is only a kind of division of logic function, can there is other dividing mode, such as multiple units or component in actual implementation
It may be combined or can be integrated into another system or some features can be ignored or does not perform.It is another, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be employed in member is realized, can also be realized in the form of SFU software functional unit.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or carry out equivalent substitution to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is not made to depart from the spirit and scope of various embodiments of the present invention technical solution.
Claims (8)
1. a kind of circuit for preventing wind power plant island-grid, which is characterized in that the circuit includes power module, submitting circuit is opened
Auxiliary contact module, voltage transformer voltage relay auxiliary contact module and intermediate relay are closed, the power module is just
The pole connection submitting contactor auxiliary contact module, it is mutual that the submitting contactor auxiliary contact module connects the voltage
Sensor voltage relay auxiliary contact module, the voltage transformer voltage relay auxiliary contact module connect the centre after
Electric appliance, the intermediate relay connect the cathode of the power module.
2. the circuit according to claim 1 for preventing wind power plant island-grid, which is characterized in that the voltage transformer electricity
Potential relay auxiliary contact module is bus-bar potential transformer voltage relay auxiliary contact module, alternatively, sending out line voltage distribution
Mutual inductor voltage relay auxiliary contact module.
3. the circuit according to claim 2 for preventing wind power plant island-grid, which is characterized in that
The bus-bar potential transformer voltage relay auxiliary contact module includes first line voltage transformer, the First Line
The road voltage transformer connection submitting contactor auxiliary contact module and the intermediate relay.
4. the circuit according to claim 2 for preventing wind power plant island-grid, which is characterized in that the submitting line voltage distribution
Mutual inductor voltage relay auxiliary contact module includes the first line voltage transformer and the second line voltage transformer of series connection,
The first line voltage transformer connection submitting contactor auxiliary contact module, second line voltage transformer
Connect the intermediate relay.
5. according to any circuit for preventing wind power plant island-grid in Claims 1-4, which is characterized in that described to send
Going out contactor auxiliary contact module includes the first breaker, and first breaker connects the anode of the power module respectively
With the voltage transformer voltage relay auxiliary contact module.
6. according to any circuit for preventing wind power plant island-grid in Claims 1-4, which is characterized in that described to send
Going out contactor auxiliary contact module includes the first breaker and the second breaker of series connection, and first breaker connects power supply
The anode of module, second breaker connect the voltage transformer voltage relay auxiliary contact module.
7. the circuit according to claim 1 for preventing wind power plant island-grid, which is characterized in that the intermediate relay bag
It includes three and jumps current collection route and a spare jump current collection route.
8. the circuit according to claim 7 for preventing wind power plant island-grid, which is characterized in that the intermediate relay is also
Including a relay coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810079866.4A CN108054785A (en) | 2018-01-27 | 2018-01-27 | A kind of circuit for preventing wind power plant island-grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810079866.4A CN108054785A (en) | 2018-01-27 | 2018-01-27 | A kind of circuit for preventing wind power plant island-grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108054785A true CN108054785A (en) | 2018-05-18 |
Family
ID=62124819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810079866.4A Pending CN108054785A (en) | 2018-01-27 | 2018-01-27 | A kind of circuit for preventing wind power plant island-grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108054785A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB150766A (en) * | 1919-05-03 | 1920-09-03 | Oerlikon Maschf | Method of indicating, locating, and isolating faults in electric transmission or distributing systems |
| CN201877814U (en) * | 2010-12-15 | 2011-06-22 | 中国神华能源股份有限公司 | Controller for circuit breaker |
| CN203312781U (en) * | 2013-05-29 | 2013-11-27 | 国家电网公司 | Integrated anti-islanding protection system for distributed power generation |
| WO2014000359A1 (en) * | 2012-06-29 | 2014-01-03 | 京东方科技集团股份有限公司 | Islanding detection method and system |
| CN103855723A (en) * | 2014-03-27 | 2014-06-11 | 江苏省电力公司常州供电公司 | Control device for preventing inverse power transmission of grid-connected point of photovoltaic power station |
| CN203859503U (en) * | 2014-04-28 | 2014-10-01 | 中国南方电网有限责任公司超高压输电公司广州局 | Circular logic relieving circuit for AC filter online protection tripping loop |
| CN104466923A (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Power distribution network protection circuit and system connected into microgrid |
| CN104795838A (en) * | 2015-04-24 | 2015-07-22 | 国家电网公司 | Intelligent anti-islanding device and automatic islanding detecting and destroying method |
| CN105162086A (en) * | 2015-09-11 | 2015-12-16 | 国家电网公司 | Protection method for DG grid-connected transformer grounding system |
| CN106159985A (en) * | 2015-03-26 | 2016-11-23 | 国网河北省电力公司电力科学研究院 | A kind of anti-isolated island method and apparatus of DC distribution net distributed power source |
| CN106972469A (en) * | 2017-04-28 | 2017-07-21 | 华北电力大学（保定） | A kind of single line of power plant sends out line fault protection system and its guard method |
| CN107005057A (en) * | 2014-12-23 | 2017-08-01 | Abb瑞士股份有限公司 | Method and controller for the control of coordination wind power plant during being disconnected with utility network |
| CN107039958A (en) * | 2017-06-09 | 2017-08-11 | 云南电力试验研究院(集团)有限公司 | The protection system to earth and method of a kind of wind power plant box type transformer low-pressure system |
| WO2017185756A1 (en) * | 2016-04-26 | 2017-11-02 | 国电南瑞科技股份有限公司 | Electric automobile and power grid interactive simulation load system and electrical protection method therefor |
| CN107453337A (en) * | 2017-09-04 | 2017-12-08 | 湖南长高思瑞自动化有限公司 | A kind of distributed photovoltaic and network protection method and device |
| CN207910492U (en) * | 2018-01-27 | 2018-09-25 | 丘健兴 | A kind of circuit preventing wind power plant island-grid |
-
2018
- 2018-01-27 CN CN201810079866.4A patent/CN108054785A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB150766A (en) * | 1919-05-03 | 1920-09-03 | Oerlikon Maschf | Method of indicating, locating, and isolating faults in electric transmission or distributing systems |
| CN201877814U (en) * | 2010-12-15 | 2011-06-22 | 中国神华能源股份有限公司 | Controller for circuit breaker |
| WO2014000359A1 (en) * | 2012-06-29 | 2014-01-03 | 京东方科技集团股份有限公司 | Islanding detection method and system |
| CN203312781U (en) * | 2013-05-29 | 2013-11-27 | 国家电网公司 | Integrated anti-islanding protection system for distributed power generation |
| CN103855723A (en) * | 2014-03-27 | 2014-06-11 | 江苏省电力公司常州供电公司 | Control device for preventing inverse power transmission of grid-connected point of photovoltaic power station |
| CN203859503U (en) * | 2014-04-28 | 2014-10-01 | 中国南方电网有限责任公司超高压输电公司广州局 | Circular logic relieving circuit for AC filter online protection tripping loop |
| CN104466923A (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Power distribution network protection circuit and system connected into microgrid |
| CN107005057A (en) * | 2014-12-23 | 2017-08-01 | Abb瑞士股份有限公司 | Method and controller for the control of coordination wind power plant during being disconnected with utility network |
| CN106159985A (en) * | 2015-03-26 | 2016-11-23 | 国网河北省电力公司电力科学研究院 | A kind of anti-isolated island method and apparatus of DC distribution net distributed power source |
| CN104795838A (en) * | 2015-04-24 | 2015-07-22 | 国家电网公司 | Intelligent anti-islanding device and automatic islanding detecting and destroying method |
| CN105162086A (en) * | 2015-09-11 | 2015-12-16 | 国家电网公司 | Protection method for DG grid-connected transformer grounding system |
| WO2017185756A1 (en) * | 2016-04-26 | 2017-11-02 | 国电南瑞科技股份有限公司 | Electric automobile and power grid interactive simulation load system and electrical protection method therefor |
| CN106972469A (en) * | 2017-04-28 | 2017-07-21 | 华北电力大学（保定） | A kind of single line of power plant sends out line fault protection system and its guard method |
| CN107039958A (en) * | 2017-06-09 | 2017-08-11 | 云南电力试验研究院(集团)有限公司 | The protection system to earth and method of a kind of wind power plant box type transformer low-pressure system |
| CN107453337A (en) * | 2017-09-04 | 2017-12-08 | 湖南长高思瑞自动化有限公司 | A kind of distributed photovoltaic and network protection method and device |
| CN207910492U (en) * | 2018-01-27 | 2018-09-25 | 丘健兴 | A kind of circuit preventing wind power plant island-grid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103081274B (en) | Isolated island situation in detection electric power networks | |
| Rahman et al. | Protection of large partitioned MTDC networks using DC-DC converters and circuit breakers | |
| CN111049270A (en) | Intelligent outdoor switch box and closed-loop I-shaped power distribution network thereof | |
| CN103560512B (en) | A kind of medium voltage distribution network high reliability closed loop mode of connection | |
| CN103311906B (en) | A kind of switch changed position islanding detect based on Wide-area Measurement Information and directly tripping operation formula island protect method | |
| Abbaspour et al. | Multi-agent system-based hierarchical protection scheme for distribution networks with high penetration of electronically-coupled DGs | |
| CN102623994B (en) | Substation area control method and system of microgrid operation mode | |
| CN103825363B (en) | A kind of wind-light storage low pressure micro-capacitance sensor group protection coordination controller | |
| El Naily et al. | Minimizing the impact of distributed generation of a weak distribution network with an artificial intelligence technique | |
| Wan et al. | Multi-agent application in protection coordination of power system with distributed generations | |
| CN107959286A (en) | A kind of power transmission network dynamic reconfiguration method based on 3/2 mode of connection | |
| CN207910492U (en) | A kind of circuit preventing wind power plant island-grid | |
| CN102412574A (en) | Restructuring algorithm for distribution network | |
| CN104916856A (en) | Energy storage system capable of increasing operational reliability of flow battery and method thereof | |
| CN107294128B (en) | Distributed power supply comprehensive anti-islanding protection system and method | |
| CN201160223Y (en) | Multi-ring website system | |
| CN105162088A (en) | 10kV cable network feed line power distribution station fault automatic detection system | |
| CN108054785A (en) | A kind of circuit for preventing wind power plant island-grid | |
| CN107769162A (en) | Generator protection tripgear based on 3/2 wiring condition power plant | |
| CN203481822U (en) | Closed loop power supply model of medium voltage 10 kilovolt power distribution network | |
| Daryani et al. | Multi-agent approach to wide-area integrated adaptive protection system of microgrid for pre-and post-contingency conditions | |
| Swathika et al. | Communication assisted overcurrent protection of microgrid | |
| Gomes et al. | Automation meta-system applied to smart grid convergence of low voltage distribution legacy grids | |
| Albunashee et al. | DER coordination strategy for Volt/VAR control using IEC61850 GOOSE protocol | |
| CN107026433B (en) | Rapid protection system and method for current collection circuit of new energy power station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |