CN105406598A - Voltage abnormality online monitoring system for transformer substation - Google Patents
Voltage abnormality online monitoring system for transformer substation Download PDFInfo
- Publication number
- CN105406598A CN105406598A CN201510978788.8A CN201510978788A CN105406598A CN 105406598 A CN105406598 A CN 105406598A CN 201510978788 A CN201510978788 A CN 201510978788A CN 105406598 A CN105406598 A CN 105406598A
- Authority
- CN
- China
- Prior art keywords
- switch
- grid
- transformer
- voltage
- transformer station
- 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
- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 230000005856 abnormality Effects 0.000 title abstract 3
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 10
- 230000002159 abnormal effect Effects 0.000 claims description 14
- 238000012806 monitoring device Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 6
- 238000013459 approach Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 102100026816 DNA-dependent metalloprotease SPRTN Human genes 0.000 description 1
- 101710175461 DNA-dependent metalloprotease SPRTN Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
Classifications
-
- H02J13/0013—
-
- 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
- Y04S10/16—Electric power substations
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a voltage abnormality online monitoring system for a transformer substation. The voltage abnormality online monitoring system comprises the transformer substation, a power grid, a grid-connected switch, a voltage detection module, a controller and an automatic changeover switch, wherein the grid-connected switch is connected between the transformer substation and the power grid; the automatic changeover switch is connected between a plurality of power supplies and the transformer substation; the controller is connected with the grid-connected switch and the automatic changeover switch respectively; the voltage detection module is connected with an output line of the transformer substation, and used for detecting an overvoltage signal and a voltage leap signal of an output voltage of the transformer substation; and the controller is used for controlling switch-on/off of the automatic changeover switch according to the overvoltage signal and the voltage leap signal. When a voltage abnormity occurs at an output end of the transformer substation, the system can perform effective monitoring in real time, and effective processing is performed through the controller, so that damage to user equipment caused by the voltage abnormity is avoided, and the potential safety hazard is reduced.
Description
Technical field
The invention discloses the abnormal online monitoring system of a kind of transformer substation voltage, belong to power accessories field.
Background technology
Photovoltaic power plant and Straw fired power plant more and more access in electrical network, the access of small power supply can cause unplanned property island phenomenon to occur to electrical network, when unplanned property island phenomenon occurs, due to system power supply Status unknown, following adverse effect will be caused: the personal safety that 1. may jeopardize electrical network facilities attendant and user; 2. the normal combined floodgate of electrical network is disturbed; 3. electrical network can not control voltage in isolated island and frequency, thus damages controller switching equipment and subscriber equipment.Require according to " photovoltaic transformer station of State Grid Corporation of China access electric power network technique specifies " the 8.2nd article: photovoltaic transformer station must possess fast monitored isolated island and disconnect the ability be connected with electrical network immediately, and its anti-island protect should match with grid side route protection.Strictly forbidding of unplanned property island phenomenon.Need to study the satisfactory safety approach that can coordinate with major network prepared auto restart, route protection and main transformer protection according to this requirement.This kind of safety approach mainly relies on the research and development of automatic safety device, selects Bu Tong more suitable in other words safety approach according to different electrical network primary connection circuit with relaying configuration.This science and technology item has broad application prospects along with the more and more of distributed power source.
The harm of islet operation and islet operation: when the distribution system comprising DG causes tripping operation for a certain reason, makes a part of distribution including one or more DG separate with main system, forms an independently region, is referred to as isolated island.
The harm of islet operation: the voltage in isolated island and frequency uncontrollable, cause subscriber equipment to damage; Circuit in isolated island is still charged, threatens maintainer's personal safety; During non-Switching Synchronization, impact large to inverter and other equipment.
At present; external anti-island protect is that the photovoltaic combining inverter utilizing power output method of perturbation principle to produce realizes; be installed in grid-connected photovoltaic station; but not the anti-island protect of photovoltaic transformer station mainly realizes by low-frequency and low-voltage disconnection device, and domestic existing anti-island protect device also all mainly judges to realize by voltage to frequency detection.
The anti-island protect of distributed power source both domestic and external is all mainly installed in grid-connected distributed power source power plant, but not be installed in grid-connected system transformer station, very burden is brought for the relaying configuration of system transformer station and operational mode, along with distributed power source gets more and more, need the safety approach taking anti-islet operation in system transformer station, therefore need to study the safe and stable operation that a kind of automatic safety device more suitable safety approach being taked to realize the grid-connected switch of faster trip according to the electrical network primary connection circuit of reality and relaying configuration realizes distribution power.
Transformer substation voltage is abnormal, easily causes subscriber equipment fault, causes serious economic loss, and there is potential safety hazard, therefore, just seems abnormal important to the voltage monitoring of transformer station.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of transformer substation voltage abnormal online monitoring system, and solving transformer station's output voltage in prior art can the problem of effective monitoring.
For solving the problems of the technologies described above, technical scheme of the present invention is:
The abnormal online monitoring system of a kind of transformer substation voltage, comprises transformer station, electrical network, grid-connected switch, voltage detection module, controller, automatic transfer switch, described transformer station be connected grid-connected switch between electrical network, described multiple power supply is connected automatic transfer switch with between transformer station, for the annexation between auto switching electric source and transformer station, the output of described grid-connected switch arranges current differential protection module, directional over-current protection module, safety automation handover module, described current differential protection module is connected with electrical network, described directional over-current protection block coupled in series is between transformer station's output line and electrical network inlet wire, safety automation switching device shifter is connected with grid-connected switch, described controller respectively with grid-connected switch, automatic transfer switch connects, described voltage detection module is connected with the output line of transformer station, for detecting the overvoltage signal of transformer station's output voltage, voltage jump signal, controller is according to the break-make of overvoltage signal and the automatic roof-cut resistence of voltage jump signal controlling.
Also comprise anti-islet operation supervising device, described anti-islet operation supervising device is connected with transformer station, grid-connected switch, electrical network respectively; Described anti-islet operation supervising device comprises current differential protection module, directional over-current protection module, safety automation handover module; described current differential protection module is connected with electrical network; described directional over-current protection block coupled in series is between transformer station's output line and electrical network inlet wire, and safety automation switching device shifter is connected with grid-connected switch.
The central processing unit of described controller adopts the one in single-chip microcomputer, fpga chip, ARM chip, dsp chip.
The central processing unit of described control module adopts the one in fpga chip.
The central processing unit of described control module adopts the one in the Spartan-6 Series FPGA chip of Xilinx company.
Described transformer station comprises inverter, step-up transformer, circuit breaker, UPS AC power, gate energy meter, electric energy quality on-line monitoring device, protective device, measure and control device, DC power supply, electric flux terminal server, switch; The output of described inverter is connected with the input of step-up transformer, and the output of described step-up transformer is connected with the input of current differential protection module, directional over-current protection module, safety automation handover module respectively; Described circuit breaker is connected with grid-connected switch; Described gate energy meter, electric energy quality on-line monitoring device, protective device, measure and control device are connected with the output of step-up transformer; Described DC power supply is connected with electric energy quality on-line monitoring device, protective device, measure and control device respectively; Described UPS AC power is connected with gate energy meter, electric flux terminal server, switch respectively.
Compared with prior art, beneficial effect of the present invention is:
1, when transformer station's output end voltage occurs abnormal, this system can effectively be monitored in real time, and is effectively processed by controller, avoids electric voltage exception to cause subscriber equipment to damage, reduces potential safety hazard.
2, make equipment haul oneself willingly into action accuracy rate to improve, guarantee the lasting reliable power supply of electric substation.
Embodiment
Below technical scheme of the present invention is described in detail:
The abnormal online monitoring system of a kind of transformer substation voltage, comprises transformer station, electrical network, grid-connected switch, voltage detection module, controller, automatic transfer switch, described transformer station be connected grid-connected switch between electrical network, described multiple power supply is connected automatic transfer switch with between transformer station, for the annexation between auto switching electric source and transformer station, the output of described grid-connected switch arranges current differential protection module, directional over-current protection module, safety automation handover module, described current differential protection module is connected with electrical network, described directional over-current protection block coupled in series is between transformer station's output line and electrical network inlet wire, safety automation switching device shifter is connected with grid-connected switch, described controller respectively with grid-connected switch, automatic transfer switch connects, described voltage detection module is connected with the output line of transformer station, for detecting the overvoltage signal of transformer station's output voltage, voltage jump signal, controller is according to the break-make of overvoltage signal and the automatic roof-cut resistence of voltage jump signal controlling.
Also comprise anti-islet operation supervising device, described anti-islet operation supervising device is connected with transformer station, grid-connected switch, electrical network respectively; Described anti-islet operation supervising device comprises current differential protection module, directional over-current protection module, safety automation handover module; described current differential protection module is connected with electrical network; described directional over-current protection block coupled in series is between transformer station's output line and electrical network inlet wire, and safety automation switching device shifter is connected with grid-connected switch.
The central processing unit of described controller adopts the one in single-chip microcomputer, fpga chip, ARM chip, dsp chip.
The central processing unit of described control module adopts the one in fpga chip.
The central processing unit of described control module adopts the one in the Spartan-6 Series FPGA chip of Xilinx company.
Described transformer station comprises inverter, step-up transformer, circuit breaker, UPS AC power, gate energy meter, electric energy quality on-line monitoring device, protective device, measure and control device, DC power supply, electric flux terminal server, switch; The output of described inverter is connected with the input of step-up transformer, and the output of described step-up transformer is connected with the input of current differential protection module, directional over-current protection module, safety automation handover module respectively; Described circuit breaker is connected with grid-connected switch; Described gate energy meter, electric energy quality on-line monitoring device, protective device, measure and control device are connected with the output of step-up transformer; Described DC power supply is connected with electric energy quality on-line monitoring device, protective device, measure and control device respectively; Described UPS AC power is connected with gate energy meter, electric flux terminal server, switch respectively.
XC6SLX16 chip in the Spartan-6 family chip of the present embodiment employing Xilinx company is as primary processor, and Spartan-6 series not only has leading system integration ability, can also realize the minimum total cost being applicable to high volume applications simultaneously.This series is by 13 member compositions, and available density is not from 3840 logical blocks to 147443 logical blocks etc.Compared with previous generation Spartan series, this serial power consumption be only its 50%, and speed is faster, linkage function is more comprehensively abundant.Spartan-6 series adopts the manufacture of ripe 45nm low-power consumption copper wiring technology, the perfection achieving cost performance and power consumption balances, brand-new and more efficient pair register 6 can be provided to input look-up table (LUT) logic and a series of abundant built-in system level module, comprising 18Kb (2x9Kb) BlockRAM, second generation DSP48A1Slice, SDRAM Memory Controller, enhancement mode mixed mode Clock management module, SelectIO technology, the high speed serialization transceiver module of power optimization, the compatible endpoint module of PCIExpress, AS level power supply management mode, automatic detection config option, and by AES and DeviceDNA defencive function realize enhanced ip fail safe.These excellent specific properties provide the replacement scheme able to programme of low cost for customizing ASIC product with unprecedented ease for use.Spartan-6FPGA can be logical design in enormous quantities, is that the DSP design of guiding and cost-sensitive Embedded Application provide best solution with consumer.Spartan-6FPGA has established solid programmable chip basis, is highly suitable for the target design platform that can provide integrated software and hardware assembly, energy can be focused on innovation work to make designer at the beginning of development starts.
The grading of 1.Spartan-6FPGA logical block has fully demonstrated the more powerful logical block ability that up-to-date 6 input LUT frameworks possess.
2. each Spartan-6FPGASlice all comprises 4 LUT and 8 triggers.
3. each DSP48A1Slice includes a 18x18 multiplier, an adder and an accumulator.
4.BlockRAM size is 18Kb substantially.Each module can also as two independently 9Kb module uses.
5. each CMT includes two DCM and PLL.
6. under-3N speed step, do not support Memory Controller module.
Technical staff can select the concrete model being applicable to project according to the needs relating to input.
Claims (6)
1. the abnormal online monitoring system of transformer substation voltage, comprises transformer station, electrical network, grid-connected switch, voltage detection module, controller, automatic transfer switch, described transformer station be connected grid-connected switch between electrical network, it is characterized in that: described multiple power supply is connected automatic transfer switch with between transformer station, for the annexation between auto switching electric source and transformer station, the output of described grid-connected switch arranges current differential protection module, directional over-current protection module, safety automation handover module, described current differential protection module is connected with electrical network, described directional over-current protection block coupled in series is between transformer station's output line and electrical network inlet wire, safety automation switching device shifter is connected with grid-connected switch, described controller respectively with grid-connected switch, automatic transfer switch connects, described voltage detection module is connected with the output line of transformer station, for detecting the overvoltage signal of transformer station's output voltage, voltage jump signal, controller is according to the break-make of overvoltage signal and the automatic roof-cut resistence of voltage jump signal controlling.
2. the abnormal online monitoring system of transformer substation voltage according to claim 1, it is characterized in that: also comprise anti-islet operation supervising device, described anti-islet operation supervising device is connected with transformer station, grid-connected switch, electrical network respectively; Described anti-islet operation supervising device comprises current differential protection module, directional over-current protection module, safety automation handover module; described current differential protection module is connected with electrical network; described directional over-current protection block coupled in series is between transformer station's output line and electrical network inlet wire, and safety automation switching device shifter is connected with grid-connected switch.
3. the abnormal online monitoring system of transformer substation voltage according to claim 1, is characterized in that: the central processing unit of described controller adopts the one in single-chip microcomputer, fpga chip, ARM chip, dsp chip.
4. the abnormal online monitoring system of transformer substation voltage according to claim 3, is characterized in that: the central processing unit of described control module adopts the one in fpga chip.
5. the abnormal online monitoring system of transformer substation voltage according to claim 4, is characterized in that: the central processing unit of described control module adopts the one in the Spartan-6 Series FPGA chip of Xilinx company.
6. the abnormal online monitoring system of transformer substation voltage according to claim 1, is characterized in that: described transformer station comprises inverter, step-up transformer, circuit breaker, UPS AC power, gate energy meter, electric energy quality on-line monitoring device, protective device, measure and control device, DC power supply, electric flux terminal server, switch; The output of described inverter is connected with the input of step-up transformer, and the output of described step-up transformer is connected with the input of current differential protection module, directional over-current protection module, safety automation handover module respectively; Described circuit breaker is connected with grid-connected switch; Described gate energy meter, electric energy quality on-line monitoring device, protective device, measure and control device are connected with the output of step-up transformer; Described DC power supply is connected with electric energy quality on-line monitoring device, protective device, measure and control device respectively; Described UPS AC power is connected with gate energy meter, electric flux terminal server, switch respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510978788.8A CN105406598A (en) | 2015-12-24 | 2015-12-24 | Voltage abnormality online monitoring system for transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510978788.8A CN105406598A (en) | 2015-12-24 | 2015-12-24 | Voltage abnormality online monitoring system for transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105406598A true CN105406598A (en) | 2016-03-16 |
Family
ID=55471920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510978788.8A Pending CN105406598A (en) | 2015-12-24 | 2015-12-24 | Voltage abnormality online monitoring system for transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105406598A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421442A (en) * | 2022-01-18 | 2022-04-29 | 山东鲁软数字科技有限公司智慧能源分公司 | Intelligent grid-connected switch and power grid protection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202495737U (en) * | 2012-02-16 | 2012-10-17 | 成都玺汇科技有限公司 | Lightning-protection overvoltage automatic power-off controller used for electric appliance |
| CN202917991U (en) * | 2012-09-12 | 2013-05-01 | 深圳市禾望电气有限公司 | Converter and converter system |
| CN103683491A (en) * | 2013-11-12 | 2014-03-26 | 国家电网公司 | Multi-power accessed substation anti-islanding system |
| CN104766440A (en) * | 2015-03-31 | 2015-07-08 | 无锡市崇安区科技创业服务中心 | Bicycle trailer capable of induction alarming |
-
2015
- 2015-12-24 CN CN201510978788.8A patent/CN105406598A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202495737U (en) * | 2012-02-16 | 2012-10-17 | 成都玺汇科技有限公司 | Lightning-protection overvoltage automatic power-off controller used for electric appliance |
| CN202917991U (en) * | 2012-09-12 | 2013-05-01 | 深圳市禾望电气有限公司 | Converter and converter system |
| CN103683491A (en) * | 2013-11-12 | 2014-03-26 | 国家电网公司 | Multi-power accessed substation anti-islanding system |
| CN104766440A (en) * | 2015-03-31 | 2015-07-08 | 无锡市崇安区科技创业服务中心 | Bicycle trailer capable of induction alarming |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421442A (en) * | 2022-01-18 | 2022-04-29 | 山东鲁软数字科技有限公司智慧能源分公司 | Intelligent grid-connected switch and power grid protection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Walling et al. | Summary of distributed resources impact on power delivery systems | |
| US20170004948A1 (en) | Electrical circuit protector | |
| Ye et al. | System studies of the superconducting fault current limiter in electrical distribution grids | |
| CN101673964B (en) | Modular UPS integrated power distribution system | |
| CN105391178A (en) | Substation anti-islanding operation monitoring system | |
| Khademlahashy et al. | A review on protection issues in micro-grids embedded with distribution generations | |
| US20120287544A1 (en) | Isolation-type ac fault current limited circuit | |
| Nascimento et al. | An adaptive protection algorithm for distribution systems with distributed generation | |
| CN203722250U (en) | Photovoltaic device | |
| CN105406510A (en) | Multi-power accessed transformer substation monitoring system | |
| CN206759031U (en) | A kind of improved power plant's low-voltage power supply system ground protection warning device | |
| Swathika et al. | Communication assisted overcurrent protection of microgrid | |
| Bari et al. | Smart and adaptive protection scheme for distribution network with distributed generation: A scoping review | |
| CN105406598A (en) | Voltage abnormality online monitoring system for transformer substation | |
| CN105606928A (en) | Transformer substation power quality monitoring system | |
| CN105552854A (en) | Safety automatic switching system for transformer substation connected to multiple power supplies | |
| CN204408004U (en) | Double loop power supply inlet wire switching device shifter | |
| CN106849039A (en) | A kind of novel bus residual voltage holding meanss | |
| CN203707761U (en) | 10kV distribution transformer neutral line breaking trip device | |
| Ali et al. | Enhancing smart grid in Bangladesh power distribution system using substation automation | |
| CN206533127U (en) | A kind of novel bus residual voltage holding meanss | |
| CN201656555U (en) | Three-power-supply automatic switching-over device | |
| CN201975772U (en) | Conductive alternating-current fault current limiter | |
| Reihani et al. | Adaptive protection of distribution grids with distributed generation | |
| CN108462159A (en) | A kind of dc circuit breaker based on the constraint of fault current magnetic circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160316 |