CN110854918A - Fully centralized monitoring protection device and method for electrical equipment of wind power booster station - Google Patents
Fully centralized monitoring protection device and method for electrical equipment of wind power booster station Download PDFInfo
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- CN110854918A CN110854918A CN201911281932.7A CN201911281932A CN110854918A CN 110854918 A CN110854918 A CN 110854918A CN 201911281932 A CN201911281932 A CN 201911281932A CN 110854918 A CN110854918 A CN 110854918A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims 3
- 238000005259 measurement Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Classifications
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- 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
- H02H7/267—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 for parallel lines and wires
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- 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
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- 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
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a fully centralized monitoring and protecting device and a fully centralized monitoring and protecting method for electrical equipment of a wind power booster station, which comprises a CPU chip, an input module, a switching value input module, a control and protection switching value output module and a power module, wherein the input module is used for carrying out A/D conversion on analog values of the electrical equipment in the wind power booster station and then transmitting the analog values to the CPU chip, the switching value input module is used for receiving external switching value signals and transmitting the switching value signals to the CPU chip, the control and protection switching value output module is used for uniformly outputting switching value information generated by the CPU chip to corresponding control objects and protection objects in the wind power booster station, wherein, the input end of the CPU chip is connected with the input module and the switching value input module, the output end of the CPU chip is connected with the control protection switching value output module, the device and the method can realize the fully centralized monitoring and protection of the electrical equipment in the wind power booster station.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and relates to a fully centralized monitoring and protecting device and method for electrical equipment of a wind power booster station.
Background
A set of booster station computer monitoring system is conventionally configured in a booster station of a wind power plant at present and is used for monitoring, supervision and control of electrical equipment in the booster station, and the monitoring range mainly comprises: high-voltage lines, high-voltage buses, main transformers, medium-voltage lines, medium-voltage buses, reactive power compensation systems, station transformers, grounding transformers, low-voltage station power lines, important low-voltage motors, direct-current systems, UPS and the like.
The booster station monitoring system is divided into two layers in the longitudinal direction, namely a station control layer and a spacing layer. And the station control layer equipment is intensively arranged according to the long-term scale. The bay level measurement and control units are dispersedly arranged according to the electrical interval, and the high-voltage line measurement and control device, the main transformer measurement and control device and the public measurement and control device are respectively configured and assembled in a cabinet according to the interval of the power distribution device and are intensively arranged in the secondary equipment room; the medium-voltage measurement and control protection integrated device is distributed on the corresponding switch cabinet at medium-voltage intervals.
And the relay protection devices in the wind power plant booster station are dispersedly configured according to the electrical intervals to which the equipment belongs. The high-voltage line protection device, the high-voltage bus protection device and the main transformer protection device are respectively configured and combined into a cabinet according to the interval of the power distribution device and are centrally arranged in the secondary equipment room; the medium-voltage measurement and control protection integrated device is distributed on the corresponding switch cabinet at medium-voltage intervals.
The electric main wiring structure of the wind power station booster station is relatively simple, and when the current measurement and control device and the protection device are arranged according to the electric interval dispersion scheme, the following defects are adopted:
1. the number of the measurement and control devices and the number of the protection devices are relatively large, and the measurement and control devices and the protection devices need to be matched with network connection equipment. Taking the typical wiring schematic diagram of the wind power booster station shown in fig. 1 as an example, about 7 protection devices, about 7 measurement and control devices, about 8 protection and measurement and control integrated devices and 4 network switches need to be configured for electrical equipment of the booster station.
2. The number of the measurement and control devices and the number of the protection devices are relatively large, which may cause that the communication failure rate of the monitoring system network where the measurement and control devices are located and the communication failure rate of the protection information network where the protection devices are located are relatively increased.
3. The input analog quantity signals (current and voltage signals) and the output switching value signals (breaker tripping signals) of each measurement and control device and the protection device have a coincidence interval, and related signals need to be repeatedly acquired. Partial signals of each protection device are collected by the measurement and control device through hard wiring. All of the above factors cause an increase in the number of control cables.
The whole linkage debugging in the construction period and the maintenance workload in the operation period are relatively large. The measuring and controlling devices and the protecting devices are large in number and distributed in arrangement positions, and are connected with each other through a plurality of control cables, so that the difficulty of integral linkage debugging in a construction stage is objectively improved, and the workload of conventional maintenance and accident troubleshooting in an operation and maintenance stage is increased, and therefore a device and a method need to be developed, and the device and the method can realize fully centralized monitoring and protecting of electrical equipment in the wind power booster station.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device and a method for fully centralized monitoring and protecting electrical equipment of a wind power booster station.
In order to achieve the above purpose, the fully centralized monitoring protection device for electrical equipment of the wind power booster station comprises a CPU chip, an input module for performing a/D conversion on analog quantities of the electrical equipment in the wind power booster station and then transmitting the analog quantities to the CPU chip, a switching quantity input module for receiving external switching quantity signals and transmitting the switching quantity signals to the CPU chip, a control protection switching quantity output module for uniformly outputting switching quantity information generated by the CPU chip to corresponding control objects and protection objects in the wind power booster station, and a power supply module for supplying power, wherein an input end of the CPU chip is connected with the input module and the switching quantity input module, and an output end of the CPU chip is connected with the control protection switching quantity output module.
The clock synchronization interface is connected with the CPU chip.
The system also comprises an uplink communication module used for connecting the external station control layer equipment and the CPU chip and a downlink communication module used for sending the information in the CPU chip to the external equipment.
The CPU chip comprises a monitoring CPU chip and a protection CPU chip.
The external station control layer equipment comprises a host machine and operator station, an engineer station, an AGC/AVC substation, an information protection substation and a telecontrol device.
The control objects in the wind power booster station comprise a circuit breaker, an isolating switch, a grounding switch and an on-load tap changer.
The invention discloses a fully centralized monitoring and protecting method for electrical equipment of a wind power booster station, which comprises the following steps of:
the input module acquires analog quantity information of electrical equipment in the wind power booster station through a current transformer and a voltage transformer, and sends the analog quantity information of the electrical equipment in the wind power booster station to the CPU chip after A/D conversion;
the switching value input module receives an externally input switching value signal and sends the switching value signal to the CPU chip;
the CPU chip generates a control signal according to the switching value signal and the analog quantity information after A/D conversion, and sends the control signal to a corresponding control object and a corresponding protection object in the wind power booster station through a control protection switching value output module, and the corresponding control object and the corresponding protection object in the wind power booster station respond to the control signal so as to realize the fully centralized monitoring protection of the electrical equipment of the wind power booster station.
The invention has the following beneficial effects:
when the device and the method for the fully centralized monitoring and protection of the electrical equipment of the wind power booster station are operated specifically, the CPU chip collects and sends the analog quantity of the electrical equipment in the wind power booster station through the input module in a unified mode, receives external switching quantity signals through the switching quantity input module in a unified mode, and controls and protects the electrical equipment in the wind power booster station after data processing is carried out in a centralized mode through the CPU chip, so that the fully centralized monitoring and protection of the electrical equipment in the wind power booster station are achieved.
Drawings
FIG. 1 is a schematic diagram of a typical wiring of a wind power booster station;
FIG. 2 is a diagram of a wind power booster station full-centralized monitoring protection system;
fig. 3 is a block diagram of the present invention.
The system comprises a switching value input module 1, an alternating current analog value input module 2, a direct current analog value input module 3, a downlink communication module 4, a clock time tick interface 5, a monitoring CPU chip 6, a protection CPU chip 7, a printer 8, a display interface 9, an uplink communication module 10 and a control and protection switching value output module 11.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 3, the fully centralized monitoring and protecting device for electrical equipment of a wind power booster station according to the present invention includes a CPU chip, an input module for performing a/D conversion on analog quantities of the electrical equipment in the wind power booster station and then transmitting the analog quantities to the CPU chip, a switching value input module 1 for receiving external switching value signals and transmitting the switching value signals to the CPU chip, a control and protection switching value output module 11 for uniformly outputting switching value information generated by the CPU chip to corresponding control objects and protection objects in the wind power booster station, and a power module for providing electric energy, wherein, the input end of the CPU chip is connected with the input module and the switching value input module 1, the output end of the CPU chip is connected with the control protection switching value output module 11, the input module comprises an alternating current analog input module 2 and a direct current analog input module 3.
The invention also comprises a clock time setting interface 5 connected with the CPU chip, an uplink communication module 10 used for connecting the external station control layer equipment and the CPU chip, a downlink communication module 4 used for sending the information in the CPU chip to the external equipment, a printer 8 connected with the CPU chip, a display interface 9 and a keyboard, wherein the external station control layer equipment comprises a host machine and an operator station, an engineer station, an AGC/AVC substation, a letter protection substation and a telemechanical device.
The CPU chip comprises a monitoring CPU chip 6 and a protection CPU chip 7.
The control objects in the wind power booster station comprise a circuit breaker with electric operation, an isolating switch, a grounding switch and an on-load voltage regulating switch; the protection object comprises a high-voltage line, a high-voltage bus, a main transformer, a medium-voltage bus, SVG, a capacitor bank, a grounding transformer, a station transformer, a medium-voltage wind power collecting circuit, a low-voltage line and an electric appliance, wherein the protection of the low-voltage line and the electric appliance is realized by the circuit breaker body, the protection of other objects is realized by a fully centralized monitoring protection device, and the action is performed on an alarm signal or the closing/tripping of a circuit breaker.
The invention discloses a fully centralized monitoring and protecting method for electrical equipment of a wind power booster station, which comprises the following steps of:
the input module acquires analog quantity information of electrical equipment in the wind power booster station through a current transformer and a voltage transformer, and sends the analog quantity information of the electrical equipment in the wind power booster station to the CPU chip after A/D conversion;
the switching value input module 1 receives an externally input switching value signal and sends the switching value signal to a CPU chip;
the CPU chip generates a control signal according to the switching value signal and the analog quantity information after A/D conversion, and sends the control signal to a corresponding control object and a corresponding protection object in the wind power booster station through the switching value input module 1, and the corresponding control object and the corresponding protection object in the wind power booster station respond to the control signal so as to realize the fully centralized monitoring protection of the electrical equipment of the wind power booster station.
Example one
FIG. 1 shows a typical wiring of a wind power booster station, and the main devices in the monitoring protection range of the typical wind power booster station are shown in Table 1.
TABLE 1
The signal summary table of the wind power booster station shown in fig. 1 is shown in table 2.
TABLE 2
Wherein, SVG system (part), direct current, UPS signal are gathered through communication mode. And the total station signals are sent to the monitoring system host, the telecontrol device, the AGC substation and the AVC substation in a communication mode. The communication data information of each part refers to relevant specification requirements, and the table is not listed in detail.
This total station electrical equipment protection mainly includes: longitudinal differential protection and overcurrent protection of a 220kV line; differential protection of a 220kV bus; 220kV circuit breaker failure protection; main transformer differential protection, high-voltage side overcurrent protection, high-voltage side zero-sequence current protection, high-voltage side gap zero-sequence current protection, low-voltage side overcurrent protection and non-electric quantity protection; differential protection of a 35kV bus; grounding variable speed disconnection protection, overcurrent protection, zero-sequence current protection and non-electric quantity protection; the station is protected by variable speed interruption, overcurrent, zero sequence current and non-electric quantity; SVG inlet wire quick break protection, overcurrent protection, zero sequence current protection and non-electric quantity protection; capacitor bank quick-break protection, overcurrent protection, differential pressure protection and zero-sequence current protection; the method comprises the steps of wind power current collection circuit quick-break protection, overcurrent protection, zero-sequence current protection and non-electric quantity protection.
The centralized measurement and control protection device is respectively connected with a plurality of station control layer devices (a host machine and an operator station, an engineer station, an AGC/AVC substation, a letter protection substation and a telecontrol device) through a plurality of uplink communication ports, and internal monitoring protection information data are packaged and then distributed in a multi-path mode.
Claims (7)
1. The utility model provides a wind-powered electricity generation booster station electrical equipment gathers in whole and monitors protection device, its characterized in that, includes the CPU chip, is used for carrying out the analog quantity of electrical equipment in the wind-powered electricity generation booster station after the AD conversion and sends for the input module of CPU chip, is used for receiving outside switching value signal and will switching value signal send for the switching value input module (1) of CPU chip, is used for the switching value information that the CPU chip produced in unison to give the wind-powered electricity generation booster station corresponding control object and the control protection switching value output module (11) of protection object and be used for providing the power module of electric energy, wherein, the input of CPU chip is connected with input module and switching value input module (1), the output of CPU chip is connected with control protection switching value output module (11).
2. The wind power booster station electrical equipment complete centralized monitoring protection device according to claim 1, characterized by further comprising a clock time tick interface (5) connected with the CPU chip.
3. The wind power booster station electrical equipment complete centralized monitoring protection device according to claim 1, characterized by further comprising an uplink communication module (10) for connecting an external station control layer device and a CPU chip and a downlink communication module (4) for sending information in the CPU chip to an external device.
4. The wind power booster station electrical equipment complete centralized monitoring protection device according to claim 1, characterized in that the CPU chip comprises a monitoring CPU chip (6) and a protection CPU chip (7).
5. The wind power booster station electrical equipment full-centralized monitoring protection device according to claim 3, wherein the external station control layer equipment comprises a main machine and operator station, an engineer station, an AGC/AVC substation, a letter protection substation and a telecontrol device.
6. The wind power booster station electrical equipment complete centralized monitoring protection device according to claim 1, characterized in that control objects in the wind power booster station comprise a circuit breaker, a disconnecting switch, an earthing switch and an on-load tap changer.
7. A wind power booster station electrical equipment full-centralized monitoring protection method is characterized by comprising the following steps:
the input module acquires analog quantity information of electrical equipment in the wind power booster station through a current transformer and a voltage transformer, and sends the analog quantity information of the electrical equipment in the wind power booster station to the CPU chip after A/D conversion;
the switching value input module (1) receives an externally input switching value signal and sends the switching value signal to a CPU chip;
the CPU chip generates a control signal according to the switching value signal and the analog quantity information after A/D conversion, and sends the control signal to a corresponding control object and a corresponding protection object in the wind power booster station through a control protection switching value output module (11), and the corresponding control object and the corresponding protection object in the wind power booster station respond to the control signal so as to realize the all-centralized monitoring protection of the electrical equipment of the wind power booster station.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911281932.7A CN110854918A (en) | 2019-12-13 | 2019-12-13 | Fully centralized monitoring protection device and method for electrical equipment of wind power booster station |
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| CN201911281932.7A CN110854918A (en) | 2019-12-13 | 2019-12-13 | Fully centralized monitoring protection device and method for electrical equipment of wind power booster station |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203233236U (en) * | 2013-03-13 | 2013-10-09 | 江苏方天电力技术有限公司 | Digital protection, measurement and control integrated device |
| WO2017166735A1 (en) * | 2016-03-31 | 2017-10-05 | 国电南瑞科技股份有限公司 | Power-grid self-healing system and self-healing logic thereof in 110kv chain power-supply mode |
| CN210780123U (en) * | 2019-12-13 | 2020-06-16 | 华能威宁风力发电有限公司 | Fully centralized monitoring protection device for electrical equipment of wind power booster station |
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- 2019-12-13 CN CN201911281932.7A patent/CN110854918A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203233236U (en) * | 2013-03-13 | 2013-10-09 | 江苏方天电力技术有限公司 | Digital protection, measurement and control integrated device |
| WO2017166735A1 (en) * | 2016-03-31 | 2017-10-05 | 国电南瑞科技股份有限公司 | Power-grid self-healing system and self-healing logic thereof in 110kv chain power-supply mode |
| CN210780123U (en) * | 2019-12-13 | 2020-06-16 | 华能威宁风力发电有限公司 | Fully centralized monitoring protection device for electrical equipment of wind power booster station |
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