CN205901276U - Distributing type photovoltaic power plant protection device that is incorporated into power networks - Google Patents
Distributing type photovoltaic power plant protection device that is incorporated into power networks Download PDFInfo
- Publication number
- CN205901276U CN205901276U CN201620868236.1U CN201620868236U CN205901276U CN 205901276 U CN205901276 U CN 205901276U CN 201620868236 U CN201620868236 U CN 201620868236U CN 205901276 U CN205901276 U CN 205901276U
- Authority
- CN
- China
- Prior art keywords
- protection device
- cable
- output end
- input
- current transformer
- 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
- 230000001012 protector Effects 0.000 claims description 35
- 230000001681 protective effect Effects 0.000 claims description 21
- 238000012795 verification Methods 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 abstract description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 210000000720 eyelash Anatomy 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model provides a distributing type photovoltaic power plant protection device that is incorporated into power networks, photovoltaic power plant and power distribution station generating line pass through cable junction, include: power station side protection device, power station side protection device set up on the circuit of the cable of photovoltaic power plant output, the side protection device of system, the side protection device of system sets up on the cable inserts the circuit of power distribution station 10kV generating line, inlet wire protection device, inlet wire protection device set up on the circuit that the inside electric wire netting of user was exported with the power distribution station. The utility model provides a pair of distributing type photovoltaic power plant protection device that is incorporated into power networks, the device can report the service reliability after the barrier is incorporated into the power networks, reduce the power failure scope to the trouble can effectively realize amputating after the trouble.
Description
Technical field
The utility model is related to field of power, the grid-connected protection device of more particularly, to a kind of photovoltaic power station.
Background technology
Since the particularly seventies in 20th century, with the fast development of World Economics, the mankind become multiplication to the demand of the energy
Long, energy industry is also with unprecedented scale development.But some problems brought therefrom, also result in the height of many countries
Degree concern.Using coal, oil as the country of main primary energy, not only it is faced with the exhausted problem of conventional energy resource, Er Qieyou
In a large amount of uses of fossil energy, directly cause global warming and day to emission greenhouse gas and aerosol etc. in air
The serious problem of environmental pollution of benefit, all constitutes serious threat to natural ecosystems, social economy and health.Exploitation profit
Have become as world energy sources strategy of sustainable development important component part with new forms of energy.The status of regenerative resource will in this century
Obtain tremendous increase, predict the outcome according to Japan and shell, page in this century, regenerative resource is up to the 50% of energy total amount,
Photovoltaic generation is up to 15% about.Therefore, research is incorporated to existing electrical network by grid-connected for photovoltaic plant electricity, has compeled in eyebrow
Eyelash, but existing grid-connected during, it is not high to there is reliability, and fault report hinders inefficiency, easily causes and has a power failure on a large scale,
And, it is relatively difficult to after being out of order effectively excise fault.
Utility model content
The purpose of this utility model is to provide a kind of grid-connected protection device of photovoltaic power station, solves above-mentioned prior art
One of or multiple.
The utility model provides a kind of grid-connected protection device of photovoltaic power station, and photovoltaic plant is passed through with power distribution station bus
Cable connection, comprising:
Power station side protection device, power station side protection device is arranged on the circuit of cable of photovoltaic plant output；
System side protection device, system side protection device is arranged on cable and accesses on the circuit of power distribution station 10kv bus；
Incoming relay-protection device, incoming relay-protection device is arranged on the circuit that user's internal electric network is exported with power distribution station.
In some embodiments, power station side protection device comprises:
Current sensor, current sensor is arranged on cable；
Current transformer, current transformer is connected with the output end of current sensor by circuit；
Overcurrent protector, the input of overcurrent protector is connected with current transformer；
Relay, the input of relay is connected with the output end of overcurrent protector；
Breaker, the control signal input of breaker is connected with the output end of relay by circuit.
In some embodiments, system side protection device includes breaker, Surge Protector and disconnecting switch；Breaker
Input is connected with photovoltaic plant by cable, and breaker output end is connected with disconnecting switch input by cable, and surge is protected
Shield device input is overlapped on the cable between breaker and disconnecting switch, and Surge Protector output end is connected with the earth, isolation
Output switching terminal accesses power distribution station by cable.
In some embodiments, incoming relay-protection device includes Verification of Measuring Current Transformer, protective current transformer, mistake
Stream protector, band directional over-current protection device and 10kv service entrance switch；Verification of Measuring Current Transformer is installed on 10kv inlet wire cable；
Protective current transformer, is installed on 10kv inlet wire cable；The alternating current protective loop input of overcurrent protector and protection
The output end of Current Transformer is connected, the alternating current protective loop output end of overcurrent protector and band directional over-current protection device
Alternating current protective loop input be connected；Alternating current protective loop output end with directional over-current protection device is used with protection
The n of current transformer is extremely connected and constitutes current loop；10kv service entrance switch input is connected with 10kv public electric wire net, 10kv inlet wire
Output switching terminal is connected with user's 10kv bus；10kv service entrance switch control end is passed through to control the protection of cable and overcurrent protector
Trip(ping) circuit port phase.
The utility model provide a kind of grid-connected protection device of photovoltaic power station, this device can report hinder grid-connected after confession
Electric reliability, reduces power failure range, and can effectively realize excision fault after fault.
Brief description
Fig. 1 is a kind of structural framing figure of the grid-connected protection device of photovoltaic power station of the utility model；
Fig. 2 is a kind of structural frames of the power station side protection device of the grid-connected protection device of photovoltaic power station of the utility model
Figure；
Fig. 3 is that a kind of user's internal electric network of the grid-connected protection device of photovoltaic power station of the utility model accesses common electrical
Net side 10kv incoming relay-protection schematic device.
Specific embodiment
As shown in figure 1, a kind of grid-connected protection device of photovoltaic power station of the utility model, photovoltaic plant and power distribution station mother
Line is connected by cable 10, comprising:
Power station side protection device 1, power station side protection device 1 is arranged on the circuit of cable 10 of photovoltaic plant output；
System side protection device 2, system side protection device 2 is arranged on the circuit that cable 10 accesses power distribution station 10kv bus
On；
Incoming relay-protection device 3, incoming relay-protection device 3 is arranged on user's internal electric network and power distribution station 10kv bus.
Power station side protection device 1 comprises: current sensor 11, current sensor 11 is arranged on cable 10；Current Mutual Inductance
Device 12, current transformer 12 is connected with the output end of current sensor 11 by circuit；Overcurrent protector 13, overcurrent protector 13
Input be connected with current transformer 12；Relay 14, the output end phase of the input of relay 14 and overcurrent protector 13
Even；Breaker 15, the control signal input of breaker 15 is connected with the output end of relay 14 by circuit.In the present embodiment
In, overcurrent protector 13 is microcomputer protecting device, ensures that and Times barrier, adopts primary in power station side protection device 1
It is ensured that main protection whole group actuation time is not more than 20ms, time of return is not more than for configuration with standby microcomputer protecting device
30ms (returns from failure removal to protection exit contact), and simultaneously in closing by hand or when coinciding with faulty line, protection should
Can reliably instantaneous three-phase tripping operation.
System side protection device 2 includes breaker 21, Surge Protector 22 and disconnecting switch 23, and breaker 21 input leads to
Cross cable to be connected with photovoltaic plant, breaker 21 output end is connected with disconnecting switch 23 input by cable, Surge Protector
22 inputs are overlapped on the cable between breaker 21 and disconnecting switch 23, and Surge Protector 22 output end is connected with the earth,
Disconnecting switch 23 output end accesses power distribution station by cable.
Incoming relay-protection fill 3 include Verification of Measuring Current Transformer ta1, protective current transformer, ta2, overcurrent protector bz1,
Band directional over-current protection device bz2 and 10kv service entrance switch dl；Verification of Measuring Current Transformer ta1 is installed on 10kv inlet wire cable；
Protective current transformer, ta2 is installed on 10kv inlet wire cable；The alternating current protective loop input of overcurrent protector bz1
It is connected with the output end of protective current transformer, ta2, the alternating current protective loop output end of overcurrent protector bz1 and band side
It is connected to the alternating current protective loop input of overcurrent protector bz2；The protection of alternating current with directional over-current protection device bz2
Loop output is extremely connected with the n of protective current transformer, ta2 and constitutes current loop；10kv service entrance switch dl input with
10kv public electric wire net is connected, and 10kv service entrance switch dl output end is connected with user's 10kv bus；10kv service entrance switch dl control end
By controlling the trip protection loop port phase of cable and overcurrent protector bz1.
Overcurrent protector bz1, without power direction discrimination function, carries directional over-current protection device bz2 to have power direction and differentiates
Function.Overcurrent protector bz1 is computer integrated protection.Band directional over-current protection device bz2 is computer integrated protection.
When deployed, photovoltaic plant circuit be short-circuited fault when, current sensor 11 detects excessively stream, sends it to
Overcurrent protector 13, after overcurrent protector 13 failure judgement, is sent to breaker 15 so as to quick acting, instantaneous tripping open circuit
Device 15, meets the requirement of fast and reliable excision fault during the fault of all fronts.
Above-described is only some embodiments of the present utility model.For the person of ordinary skill of the art,
On the premise of creating design without departing from the utility model, some deformation can also be made and improve, these broadly fall into this practicality
New protection domain.
Claims (4)
1. the grid-connected protection device of a kind of photovoltaic power station, described photovoltaic plant passes through cable (10) even with power distribution station bus
Connect it is characterised in that including:
Power station side protection device (1), described power station side protection device (1) is arranged on the circuit of the cable (10) of photovoltaic plant output
On；
System side protection device (2), described system side protection device (2) is arranged on cable (10) and accesses power distribution station 10kv bus
On circuit；
Incoming relay-protection device (3), described incoming relay-protection device (3) is arranged on the circuit of user's internal electric network and power distribution station output
On.
2. a kind of grid-connected protection device of photovoltaic power station according to claim 1 is it is characterised in that described power station
Side protection device (1) comprises:
Current sensor (11), described current sensor (11) is arranged on cable (10)；
Current transformer (12), described current transformer (12) is connected with the output end of current sensor (11) by circuit；
Overcurrent protector (13), the described input of overcurrent protector (13) is connected with current transformer (12)；
Relay (14), the described input of relay (14) is connected with the output end of overcurrent protector (13)；
Breaker (15), the control signal input of described breaker (15) passes through the output end phase of circuit and relay (14)
Even.
3. the grid-connected protection device of a kind of photovoltaic power station according to claim 1 is it is characterised in that described system side
Protection device (2) includes breaker (21), Surge Protector (22) and disconnecting switch (23)；Described breaker (21) input leads to
Cross cable to be connected with photovoltaic plant, described breaker (21) output end is connected with disconnecting switch (23) input by cable, institute
State Surge Protector (22) input to be overlapped on the cable between breaker (21) and disconnecting switch (23), described surge protection
Device (22) output end is connected with the earth, and described disconnecting switch (23) output end accesses power distribution station by cable.
4. the grid-connected protection device of a kind of photovoltaic power station according to claim 1 is it is characterised in that described inlet wire is protected
Protection unit (3) includes Verification of Measuring Current Transformer (ta1), protective current transformer, (ta2), overcurrent protector (bz1), band side
To overcurrent protector (bz2) and 10kv service entrance switch (dl)；Described Verification of Measuring Current Transformer (ta1) is installed in 10kv inlet wire
On cable；Described protective current transformer, (ta2) is installed on 10kv inlet wire cable；Described overcurrent protector (bz1)
Alternating current protective loop input is connected with the output end of protective current transformer, (ta2), described overcurrent protector (bz1)
Alternating current protective loop output end be connected with the alternating current protective loop input with directional over-current protection device (bz2)；
The described alternating current protective loop output end with directional over-current protection device (bz2) and the n pole of protective current transformer, (ta2)
It is connected and constitute current loop；Described 10kv service entrance switch (dl) input is connected with 10kv public electric wire net, and described 10kv enters
Wiretap (dl) output end is connected with user's 10kv bus；Described 10kv service entrance switch (dl) control end pass through control cable with
The trip protection loop port phase of overcurrent protector (bz1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620868236.1U CN205901276U (en) | 2016-08-11 | 2016-08-11 | Distributing type photovoltaic power plant protection device that is incorporated into power networks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620868236.1U CN205901276U (en) | 2016-08-11 | 2016-08-11 | Distributing type photovoltaic power plant protection device that is incorporated into power networks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205901276U true CN205901276U (en) | 2017-01-18 |
Family
ID=57780397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620868236.1U Expired - Fee Related CN205901276U (en) | 2016-08-11 | 2016-08-11 | Distributing type photovoltaic power plant protection device that is incorporated into power networks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205901276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711839A (en) * | 2018-05-24 | 2018-10-26 | 华润电力风能（惠来）有限公司 | A kind of protective device based on wind-driven generator ring main unit device |
-
2016
- 2016-08-11 CN CN201620868236.1U patent/CN205901276U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711839A (en) * | 2018-05-24 | 2018-10-26 | 华润电力风能（惠来）有限公司 | A kind of protective device based on wind-driven generator ring main unit device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105119255B (en) | Photovoltaic microgrid fault isolation method based on fault state | |
| CN103618300B (en) | One has highly sensitive HVDC transmission line traveling-wave protection method | |
| CN103354354B (en) | Be applicable to impedance protecting method and the device of micro-capacitance sensor | |
| CN104852366B (en) | The direct-flow distribution system short trouble guard method of the current limiter containing resistive superconducting | |
| CN104124783A (en) | Electricity fetching device based on electric transmission line aerial thunder prevention ground wires | |
| CN106786419B (en) | Wind power plant based on station domain protection philosophy collects system relay protection method | |
| CN204118714U (en) | The alternating current-direct current mating protection device of flexible direct current transmission converter station circuit breaker | |
| CN106026055B (en) | The dotted network failure feature of the DER containing inverse type and low pressure incoming relay-protection method | |
| CN104269833B (en) | DG-included power distribution network protection scheme | |
| CN205901276U (en) | Distributing type photovoltaic power plant protection device that is incorporated into power networks | |
| CN104716635B (en) | Suitable for grid-connected and islet operation microgrid integrated technical reformation method | |
| CN102882196B (en) | Fault isolation method for distribution network containing distributed power sources | |
| CN103401227B (en) | The fault based on virtual load being applicable to micro-capacitance sensor quickly isolates method and system | |
| CN108023341A (en) | A kind of power distribution network adaptive guard method containing distributed generation resource | |
| CN203278227U (en) | Highly efficient anti-reverse combiner box circuit | |
| CN203632263U (en) | Grid-connected access structure of distributed photovoltaic power station and transformer substation 10KV bus | |
| CN108718079A (en) | High-voltage direct current power grid ring-network topology and its working method | |
| CN103606963B (en) | The grid integration structure of a kind of distributed photovoltaic power station and 380V user's distribution box | |
| CN107666150A (en) | DC line fault fast protection method and device in overhead line flexible direct current power network | |
| Yao et al. | Studies of coordinated zone protection strategy for DC grid | |
| CN205160094U (en) | A insert structure for distributed photovoltaic power plant direction overcurrent protection | |
| CN203014344U (en) | Non-electricity protection system of converter transformer or smoothing reactor | |
| CN203674730U (en) | Distributed-type grid-connected access structure of photovoltaic power stations and 380V user power distribution boxes | |
| CN203632268U (en) | Grid-connected access structure of distributed photovoltaic power stations and 380KV user box transformer substations | |
| Mirsaeidi et al. | Design and testing of a centralized protection scheme for micro-grids |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 |