CN2927443Y - Protecting control system against islet for parallel network inverse generator - Google Patents
Protecting control system against islet for parallel network inverse generator Download PDFInfo
- Publication number
- CN2927443Y CN2927443Y CN 200620007370 CN200620007370U CN2927443Y CN 2927443 Y CN2927443 Y CN 2927443Y CN 200620007370 CN200620007370 CN 200620007370 CN 200620007370 U CN200620007370 U CN 200620007370U CN 2927443 Y CN2927443 Y CN 2927443Y
- Authority
- CN
- China
- Prior art keywords
- unit
- grid
- inverter
- power generation
- signal transmitting
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides an anti-island effect protection control system for grid inverter power generation equipment, comprising a substation and at least one grid power generation equipment, wherein, the substation comprises a substation transformer, a detecting element, a control unit, an operating record unit and a signal transceiver module; the grid power generation equipment comprises an inverter, a signal transceiver module and a self-shield unit; when the working is abnormal, a demand signal will be sent to the grid power generation equipment by the signal transceiver module, and the operating condition of which the inverter transmits power supply to the power grid can be controlled. When the wireless or wired remote control protection directive are released by the central remote control of the substation, a plurality of grid inverter power generation equipment are forced to prompt stop transmitting power supply to the power grid in the region, thereby the regional power grid is avoided to be operated in the island state. In addition, the protection information from the self-shield unit of the inverter is sent to the central control unit of the substation through the signal transceiver module of the inverter.
Description
Technical field
The utility model relates to the parallel network reverse generation technology, relates in particular to a kind of protection control system of isolated island effect prevention of parallel network reverse power generation device.
Background technology
At present, the range of application of parallel network reverse equipment is very extensive, can be used for regenerative resource grid-connected systems such as photovoltaic or wind energy.For parallel network reverse equipment, except will possessing general inverter defencive function, cross and put, outside the defencive function such as radiator overtemperature, preventing and defencive function of island effect should be arranged also especially as exchanging overcurrent, direct current overcurrent, short circuit, accumulator super-charge.
Wherein, island effect is meant that the grid type contravariant equipment is when grid cut-off, inverter still keeps a certain part circuit of decompression electrical network is continued the state of power supply, voltage and frequency wild effect can take place in electric power island effect zone like this, might cause external equipment and damage or generation electric shock security incident.
Lead effect for fear of the orphan in the prior art, normally control, but, control the operating efficiency that can influence whole electrical network separately by inverter side owing to may comprise a plurality of inverters in the whole system at inverter side.
The utility model content
Problem to be solved in the utility model provides a kind of protection control system of isolated island effect prevention of parallel network reverse power generation device, to overcome the island effect in the prior art parallel network reverse power generation device.
In order to address the above problem, the utility model provides a kind of protection control system of isolated island effect prevention of parallel network reverse power generation device, comprising: transformer station and at least one equipment that generates electricity by way of merging two or more grid systems, wherein,
Described transformer station comprises: substation transformer, detecting unit, control unit, log unit and signal transmitting and receiving unit, described substation transformer connects described detecting unit, described control unit connects described log unit, and described signal transmitting and receiving unit is connected with described control unit;
The described equipment of generating electricity by way of merging two or more grid systems comprises: inverter, signal transmitting and receiving unit and self-shield unit, described inverter connect described signal transmitting and receiving unit and described self-shield unit, and described signal transmitting and receiving unit is connected with described self-shield unit.
Described transformer station also comprises codec unit, connects described detecting unit and control unit.
The wired or wireless connection of signal transmitting and receiving unit of the signal transmitting and receiving unit of described transformer station and the described equipment that generates electricity by way of merging two or more grid systems.
Compared with prior art, the utlity model has following advantage:
The utility model will send wireless or wired remote control protection instruction at the remote central controller of transformer station, force that a plurality of parallel network reverse power generation devices stop rapidly to mains supply in it is administered, and make this regional power grid avoid island state and move.
Description of drawings
Fig. 1 is the protection control system structure chart of a kind of isolated island effect prevention of parallel network reverse power generation device of the utility model.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is described:
The protection control system of a kind of isolated island effect prevention of parallel network reverse power generation device of the utility model, as shown in Figure 1, comprise: transformer station 10 and a plurality of equipment 20 that generates electricity by way of merging two or more grid systems, wherein, transformer station 10 comprises: substation transformer, detecting unit, codec unit, control unit and signal transmitting and receiving unit; The equipment 20 that generates electricity by way of merging two or more grid systems comprises: inverter, signal transmitting and receiving unit and self-shield unit.
Substation transformer also comprises primary (high-pressure side) and the transformer time utmost point, the signal of primary and transformer secondary output is input to detecting unit by mixer, and detects the operating state of substation transformer at detecting unit.For example, utilize magnetic induction way that the elementary and secondary electric current of substation transformer is monitored, observe its each phase current degree of balance and size of current change, open circuit or short-circuit conditions having judged whether; The variation of elementary and secondary each phase voltage of observation substation transformer, the variation of observation primary and secondary voltage ratio is to judge whether main electrical network has stopped powering to this transformer station district; In addition, can also detect primary and whether secondary electric brake has trip condition.
Control unit is used for when working state abnormal, sends command signal by the signal transmitting and receiving unit to the equipment that generates electricity by way of merging two or more grid systems; The generate electricity by way of merging two or more grid systems Transmit-Receive Unit of equipment be used to receive above-mentioned command signal, and control inverter is to the operating state of mains supply.Wherein, can be connected with wired mode or wireless mode between the signal transmitting and receiving unit of transformer station and the signal transmitting and receiving unit of the equipment of generating electricity by way of merging two or more grid systems, wired mode comprises cable, optical cable etc., and wireless mode comprises modes such as bluetooth, infrared, GSM.
Take place if any above-mentioned situation, transformer station 10 will send each parallel network reverse equipment 20 immediately and stop instruction to mains supply.Instruction can be divided into different brackets again, both can recover instruction automatically, and instruction recovery instruction and irrecoverable instruction level are other.The instruction that the equipment that generates electricity by way of merging two or more grid systems receives according to receiver is made fast closing with main electrical network connecting path or stopping combining inverter and is exported, to stop to mains supply.
Wherein, can recover instruction automatically is common instruction, both should all equipment that generate electricity by way of merging two or more grid systems of zone all will receive this instruction simultaneously and stop to mains supply, yet these equipment of generating electricity by way of merging two or more grid systems can restore electricity from the application of trend electrical network after the several seconds.This can recover instruction automatically judges without control unit, is directly sent by transformer substation system, makes the equipment of generating electricity by way of merging two or more grid systems make fast reaction.
It is common instruction that instruction recovers instruction, both the equipment of generating electricity by way of merging two or more grid systems received this instruction and stopped no longer to restore electricity from the application of trend electrical network behind its equipment that generates electricity by way of merging two or more grid systems behind the mains supply, had only to receive once more and just can apply for to mains supply after CPU (central processing unit) is sent the recovery instruction.It mainly is at transformer station's tripping operation (remote control system directly sends instruction) that instruction recovers instruction, or when system send can recover automatically the instruction after, the line voltage electric current is the substantial deviation normal operating conditions all the better, in the several seconds, send instruction and recover instruction, perhaps serious distortion of electrical network sinusoidal waveform or mains frequency depart from the standard mains frequency, control unit judges that the equipment output of respectively generating electricity by way of merging two or more grid systems plays a leading role to this district electrical network or influences the electrical network normal operating conditions, and then remote control system is sent each combining inverter and stopped to recover to instruct to the instruction of mains supply.
Irrecoverable instruction, existing at some individually the equipment of generating electricity by way of merging two or more grid systems break down and judge that by control unit the back sends irrecoverable instruction to its single equipment of generating electricity by way of merging two or more grid systems, the recovery of this machine must be by just recovering to generate electricity by way of merging two or more grid systems after the manual operation, and this instruction is controlled by control unit.
Circulation record transformer station's detecting unit and work state information that control unit obtains in described log unit also utilizes computer storage store recording control unit to send the operating state log of each 15 minutes transformer station's electrical network of command signal front and back.In order to fault detection analysis.
In addition; can also comprise inverter self-shield unit at the equipment of generating electricity by way of merging two or more grid systems; has certain island effect defencive function; and can send all kinds of alarm signals to control unit, be used for inverter exchanged protections automatically such as overcurrent, direct current overcurrent, short circuit, accumulator super-charge are crossed and put, radiator overtemperature.Transformer station also comprises codec unit, is used for sending command coding, and butt joint is collected mail to cease and decoded.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (3)
1, a kind of protection control system of isolated island effect prevention of parallel network reverse power generation device is characterized in that,
Comprise: transformer station and at least one equipment that generates electricity by way of merging two or more grid systems, wherein, described transformer station comprises: substation transformer, detecting unit, control unit, log unit and signal transmitting and receiving unit, described substation transformer connects described detecting unit, described control unit connects described log unit, and described signal transmitting and receiving unit is connected with described control unit;
The described equipment of generating electricity by way of merging two or more grid systems comprises: inverter, signal transmitting and receiving unit and self-shield unit, described inverter connect described signal transmitting and receiving unit and described self-shield unit, and described signal transmitting and receiving unit is connected with described self-shield unit.
2, the protection control system of isolated island effect prevention of parallel network reverse power generation device according to claim 1 is characterized in that described transformer station also comprises codec unit, connects described detecting unit and control unit.
3, as the protection control system of claim 1 to 2 isolated island effect prevention of parallel network reverse power generation device as described in each, it is characterized in that wired or wireless connection of signal transmitting and receiving unit of the signal transmitting and receiving unit of described transformer station and the described equipment that generates electricity by way of merging two or more grid systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007370 CN2927443Y (en) | 2006-03-07 | 2006-03-07 | Protecting control system against islet for parallel network inverse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007370 CN2927443Y (en) | 2006-03-07 | 2006-03-07 | Protecting control system against islet for parallel network inverse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2927443Y true CN2927443Y (en) | 2007-07-25 |
Family
ID=38281697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620007370 Expired - Fee Related CN2927443Y (en) | 2006-03-07 | 2006-03-07 | Protecting control system against islet for parallel network inverse generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2927443Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834431A (en) * | 2010-05-21 | 2010-09-15 | 深圳市科陆电子科技股份有限公司 | Method for preventing grid-connected island effect of distributed power source |
| CN102005742A (en) * | 2010-11-17 | 2011-04-06 | 中国电力科学研究院 | Distributed power generation island detection system and method based on power frequency carrier wave |
| CN102832603A (en) * | 2012-09-18 | 2012-12-19 | 山东电力集团公司济宁供电公司 | Quick junctor fault isolation method compatible to low-voltage ride through operation of photovoltaic power station |
-
2006
- 2006-03-07 CN CN 200620007370 patent/CN2927443Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834431A (en) * | 2010-05-21 | 2010-09-15 | 深圳市科陆电子科技股份有限公司 | Method for preventing grid-connected island effect of distributed power source |
| CN102005742A (en) * | 2010-11-17 | 2011-04-06 | 中国电力科学研究院 | Distributed power generation island detection system and method based on power frequency carrier wave |
| CN102005742B (en) * | 2010-11-17 | 2014-03-12 | 中国电力科学研究院 | Distributed power generation island detection system and method based on power frequency carrier wave |
| CN102832603A (en) * | 2012-09-18 | 2012-12-19 | 山东电力集团公司济宁供电公司 | Quick junctor fault isolation method compatible to low-voltage ride through operation of photovoltaic power station |
| CN102832603B (en) * | 2012-09-18 | 2016-09-07 | 国网山东省电力公司济宁供电公司 | The quick fault of interconnected transmission line partition method that a kind of compatible photovoltaic plant low voltage crossing runs |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20120283890A1 (en) | Control Apparatus for Micro-grid Connect/Disconnect from Grid | |
| CN101981776A (en) | System and method for ground fault detection and interruption | |
| JPWO2012046331A1 (en) | Failure detection device | |
| US8928175B2 (en) | Junction box, energy system and method for controlling the same | |
| CN203312781U (en) | Integrated anti-islanding protection system for distributed power generation | |
| CN203135421U (en) | Arc light protecting system | |
| CN102545375B (en) | Automatic switching on/off method for emergency power supply of power plant | |
| US20150333504A1 (en) | Protection Device for DC Collection Systems | |
| CN2927443Y (en) | Protecting control system against islet for parallel network inverse generator | |
| CN101034800A (en) | Protection control system for isolated island effect prevention of parallel network reverse power generation device and its method | |
| CN102148529A (en) | Control device and control method thereof for intelligently supplying power to circuit breaker control unit | |
| CN201994717U (en) | Control device for supplying power to breaker control units | |
| CN103887811A (en) | Distributed power supply system and control method with low voltage ride through and anti-islanding protective functions | |
| CN202978296U (en) | Photovoltaic inverter backflow prevention system | |
| CN103475022A (en) | Photovoltaic power station system with low voltage ride through and anti-islanding protection functions | |
| EP3068009B1 (en) | DC/AC converter apparatus configurable as grid-connected or stand-alone and power conversion and generation system comprising such DC/AC converter apparatus | |
| CN107276416B (en) | Switching power supply device and system | |
| CN202840926U (en) | Striking-resistant and high-pressure-resistant remote control and delay starting power supply | |
| CN208638329U (en) | A kind of intelligent safety monitoring protection system for photovoltaic generating module | |
| JP3815204B2 (en) | Distributed power supply | |
| KR101030925B1 (en) | Solar power generation system with monitoring and neutral line replacement | |
| CN104767425B (en) | The double parallel device and its control method of a kind of emergent direct current pump start device of power plant | |
| CN203911498U (en) | Distributed photovoltaic grid-connected protective equipment | |
| KR101975756B1 (en) | Solar power generation system with spare inverter for emergency response | |
| CN109698493A (en) | A kind of method and system of safeguard protection photovoltaic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070725 Termination date: 20100307 |