CN201616712U - High-voltage ring network switchgear real-time status monitoring device - Google Patents
High-voltage ring network switchgear real-time status monitoring device Download PDFInfo
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- CN201616712U CN201616712U CN2010201303225U CN201020130322U CN201616712U CN 201616712 U CN201616712 U CN 201616712U CN 2010201303225 U CN2010201303225 U CN 2010201303225U CN 201020130322 U CN201020130322 U CN 201020130322U CN 201616712 U CN201616712 U CN 201616712U
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Abstract
The utility model discloses a high-voltage ring network switchgear real-time status monitoring device, which comprises a server end and a monitoring terminal matching with a high-voltage ring network switchgear, wherein the server end is connected with the monitoring terminal via wireless network, the server end consists of a data server and pluralities of management computers connected with the data server, and the monitoring terminal consists of a master controller and pluralities of feeder line measuring units. The master controller is respectively connected with the feeder line measuring units, the feeder line measuring units adopt CS5460 chips which are connected with a dry-reed pipe sensing output end on a high-voltage ring network switchgear base, a dry-reed pipe magnet end is connected with a flexible fastener for linkage, the other end of the flexible fastener is connected with a high-voltage switch control shaft on the high-voltage ring network switchgear, and the master controller is connected with a passive sensing type power supply. The high-voltage ring network switchgear real-time status monitoring device can ensure reliable power supply, prolong service life, save maintenance expense and reduce overhauling cost and risks.
Description
Technical field
The utility model relates to power equipment, particularly relates to a kind of high pressure ring cabinet real-time state monitoring device.
Background technology
The high pressure ring cabinet is the important component part of urban power distribution network, because most high pressure ring cabinets are positioned at outdoorly, operating condition is comparatively abominable.In recent years along with the fast development of city commercial and premises, the electricity need load surge, some City Substation 10KV outlet is full at interval, many power supplies are had to by the switching of switching station ring main unit, the ring main unit operational environment is more abominable during being formed on high load capacity, is easy to generate hidden danger such as equipment heating, condensation.Because the potential safety hazard that causes not in place is keeped in repair in the frequent or blindly maintenance of provisional maintenance on the one hand of the power equipment in the electric power system on the other hand, influences safe power supply, and power supply reliability is reduced.The high pressure ring cabinet adopts the mode of manual patrol, inspection to pinpoint the problems mostly at present, fix a breakdown, owing to lack effective monitoring means, many hidden danger is difficult for being found, not only be difficult to guarantee power supply reliability, service life of equipment is shorter, but also will expend a large amount of maintenance costs, and the cost of overhaul and risk are higher.And the high-voltage switch gear of high pressure ring cabinet is generally by Artificial Control at present, and the operating state of switch is not apparent, and this makes troubles also for staff's work.
The utility model content
The purpose of this utility model is in order to overcome the deficiency of above-mentioned background technology, a kind of high pressure ring cabinet real-time state monitoring device that can guarantee power supply reliability, prolongation service life of equipment, saving maintenance cost, reduce the cost of overhaul and risk to be provided.
The high pressure ring cabinet real-time state monitoring device that the utility model provides, comprise server end and the monitoring terminal that mates with the high pressure ring cabinet, described server end links to each other by wireless network with described monitoring terminal, server end comprises data server and the some supervisory computers that link to each other with data server, described monitoring terminal comprises main controller and some feeder line measuring units, main controller links to each other with some feeder line measuring units respectively, adopt the CS5460 chip in the described feeder line measuring unit, described CS5460 chip is responded to output with the tongue tube on being fixed on high pressure ring cabinet pedestal and is linked to each other, described tongue tube magnet end has been connected with the soft drawn lock of interlock effect, the other end of described soft drawn lock links to each other with high pressure ring high-voltage switch gear Control Shaft cashier's office in a shop, and described main controller connects passive induction type power supplying power supply.
In technique scheme, comprise temperature sensor, humidity sensor, on off state transducer, current sensor and sulphur hexafluoride transducer in the described feeder line measuring unit.
In technique scheme, described sulphur hexafluoride transducer is arranged on the bottom in the high pressure ring cabinet sealing cabinet.
In technique scheme, described server end also comprises GIS-Geographic Information System GIS server, and described GIS server links to each other with described data server, some supervisory computers respectively.
In technique scheme, described server end also comprises preposition receiving workstation, and described preposition receiving workstation links to each other with described GIS server, data server, some supervisory computers respectively.
In technique scheme, described preposition receiving workstation links to each other with GIS server, data server, some supervisory computers by interface server.
In technique scheme, comprise Power Monitoring Unit, ring main unit gate inhibition monitoring alarm module, electriferous state alarm module in the described main controller.
In technique scheme, described main controller is provided with the GSM antenna.
Every ring main unit is installed a monitoring terminal, is responsible for gathering the parameters in this cabinet.One cover monitoring of software is installed in the preposition receiving workstation, be responsible for and monitoring terminal between communication, alarms etc. are also being served as the bridge that connects between monitoring system and the GIS simultaneously, at any time the Data Update that monitors are checked to the GIS confession.Preposition work station receives the data that local supervising and measuring equipment sends, and issues control, data query, and transmits the data that need storage on data interface server.The quantity of this work station suitably expands according to the size of data volume, is no more than 2000 with each SMT Station Management local supervising and measuring equipment quantity in principle.Be to guarantee that reliability, this work station should take the warm standby mode operation, when certain preposition work station breaks down when out of service, the local supervising and measuring equipment in its range of management is taken over by standby work station or the lighter work station of other loads automatically.It is the data that the preposition work station of temporary transient storage sends that interface server mainly acts on, and through behind the discriminatory analysis, data is distributed to carries out permanent storage on the different data servers.Newly-increased ring main unit data server expands first wife's electric management system data server, and sets up association, with the subdata server of new ring main unit data server as the power dispatching data server.Make full use of advanced achievements such as high voltage technique, sensing technology, computer technology, Digital Signal Processing, the network communications technology, realize the in-situ digitalization monitoring and the centralized Analysis management of equipment status parameter.Under the unified platform, marketing, distribution management department can realize remote live on-line monitoring to looped network cabinet equipment in conjunction with mis system, power consuming administrative system, Distributing Network GIS system, in time find fault, in time take some countermeasures, guarantee electric power netting safe running, guarantee city electricity consumption client's safe power supply, improve the reliability of power supply.Effective monitoring means has been arranged, by the maintenance that power equipment just can be rationally arranged in the accumulation and the analysis of data, saved recondition expense, reduce the cost of overhaul, the equipment that guarantees simultaneously has higher reliability.In addition, because the soft drawn that has additional the interlock effect is locked main controller is linked to each other with high pressure ring high-voltage switch gear Control Shaft cashier's office in a shop, realize interlock with switch by soft drawn lock, reactive switches state, the high-voltage switch gear state that the staff can be made things convenient for learn the high pressure ring cabinet in time.
Structure has the condition monitoring system of distributed frame, exploitation based on the real-time Data Transmission platform of public network, be suitable for the back-stage management analysis software and be fit to the various transducers of ring main unit data acquisition, can monitor in real time the various state parameters of ring main unit, and can carry out active to fault message and write down, report, store, historical failure or state are carried out intellectual analysis and exported analysis result; Monitor on the spot, monitor the various state parameters of ring main unit in real time.Along with comprehensive intelligent systems such as sensing technology, microelectronics, computer software and hardware and Digital Signal Processing, artificial neural net, expert system, fuzzy set theory use, can obtain following benefit in status monitoring and failure diagnosis:
1. save a large amount of maintenance costs;
2. improve the equipment availability coefficient;
3. prolong service life of equipment;
4. increase power supply capacity;
5. guarantee power supply reliability;
6. reduce the cost of overhaul, reduce the maintenance risk.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is the structural representation of monitoring terminal in the utility model;
Fig. 3 is the connection diagram of ring main unit high-voltage switch gear;
Fig. 4 is the passive induction power supply of ring main unit, tongue tube and sulphur hexafluoride transducer arrangements schematic diagram;
Fig. 5 is the principle schematic of induction power taking;
Fig. 6 is the layout schematic diagram of sulphur hexafluoride transducer.
Among the figure: 1-tongue tube, 2-magnet, 3-soft drawn lock, 4-high-voltage switch gear Control Shaft, 5-main switch, 6-earthed switch, 7-dry-reed tube switch, 8-main controller, 9-cable, 10-sulphur hexafluoride transducer, 11-secondary coil, 12-iron core.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail:
Referring to shown in Figure 1, the high pressure ring cabinet real-time state monitoring device that the utility model provides, comprise server end and the monitoring terminal that mates with ring main unit, described server end links to each other by wireless network with described monitoring terminal, server end comprises data server and the some supervisory computers that link to each other with data server, described monitoring terminal comprises main controller and some feeder line measuring units, referring to shown in Figure 2, comprise temperature sensor, humidity sensor, on off state transducer, current sensor and sulphur hexafluoride transducer in the feeder line measuring unit.Because of 5 times of the density of sulphur hexafluoride to air, can sink after it is revealed, seal bottom (referring to shown in Figure 6) in the cabinet so the sulphur hexafluoride transducer is arranged on the high pressure ring cabinet, with the leak case of reliable Detection sulphur hexafluoride.Main controller links to each other with some feeder line measuring units respectively, adopt the CS5460 chip in the described feeder line measuring unit, the CS5460 chip is responded to output with the tongue tube on being fixed on high pressure ring cabinet pedestal and is linked to each other, referring to shown in Figure 3, magnet 2 ends of described tongue tube 1 have been connected with the soft drawn lock 3 of interlock effect, and the other end of soft drawn lock 3 links to each other with high pressure ring high-voltage switch gear Control Shaft 4 cashier's office in a shop.Referring to shown in Figure 4, be provided with four groups of main switches 5, earthed switch 6, dry-reed tube switch 7, main controller 8, cable 9 and sulphur hexafluoride transducer 10 in the ring main unit, main controller 8 connects passive induction type power supplying power supply, referring to shown in Figure 5, passive induction type power supplying power supply is by the iron core 12 in the cable 9, cable 9 and be wrapped in iron core 12 outer secondary coils 11 and form, realize the induction power taking, secondary coil 11 output induced currents.Comprise Power Monitoring Unit, ring main unit gate inhibition monitoring alarm module, electriferous state alarm module in the main controller.Main controller is provided with the GSM antenna.Server end also comprises GIS-Geographic Information System GIS server, and the GIS server links to each other with described data server, some supervisory computers respectively.Server end also comprises preposition receiving workstation, and preposition receiving workstation links to each other with described GIS server, data server, some supervisory computers respectively.Preposition receiving workstation links to each other with GIS server, data server, some supervisory computers by interface server.
Operation principle of the present utility model is as follows:
Communication modes is for mixing communication mode: wireless public network+private local area network+wide area network (Internet).Wireless public network (GPRS of commmunication company), directly adopts the GPRS public network to insert wide area network and inserts this mode of power supply private local area network again for optimum through relatively by the data traffic charge., be connected the transfer of data internet by the reliable GSM network of mobile operator with the management backstage.At any old place,, can realize Long-distance Control (remote control, remote signalling, remote measurement) to whole system as long as can connect internet.The core communication module adopts the GTM900 of Huawei wireless module, and this module is a three frequency band GSMs/GPRS wireless module.Its is supported the AT order of standard and strengthens the AT order, and abundant functions such as voice-and-data business are provided, and is the ideal solution of various application such as high speed data transfer.Simultaneously, the GTM900 wireless module also is adapted at the network operation down of GT800.It provides abundant clustering functionality such as group calling, broadcasting, individual call, priority call, is the core solution of each Terminal Type of GT800.
The field monitoring terminal adopts based on the 32-bit microprocessor technology, in real time monitoring parameter is carried out conversion of signals, collection, processing on the spot continuously in device context, and analysis meter is calculated various data, realizes that the in-situ digitalization of ring main unit is measured.Possess temperature (monitoring elbow type cable end, ambient temperature), humidity, ring main unit on off state, ring main unit door state, electric current (load), reach function such as sulphur hexafluoride leakage monitoring warning.Its high-performance CPU adopts modified model Harvard framework, service behaviour is up to 16MIPS@32MHz, the 8MHz internal oscillator, 4 frequency multiplication PLL options, a plurality of frequency division option, 17 x17 position monocycle hardware decimal/integer multiplier, 32/16 hardware division devices, 16 x16 position work register arrays, the C compiler instruction set architecture of optimizing, article 76, elementary instruction, addressing mode flexibly, the maximum 12MB of linear program memory addressing, the maximum 64KB of linear data storage addressing, two address generating units can be carried out the read and write addressing to the data memory respectively.
The performance of the CS5460 chip that adopts in the feeder line measuring unit is as follows: operating voltage range is that 2.0V is to 3.6V; the anti-wiping of flash memory program storage/write number of times reaches (representative value) 1000 times; can programme again voluntarily under the software control; optional power managed pattern: park mode, idle pulley and standby clock pattern; error protection clock monitor work:, the clock source is switched to low-power consumption in the sheet in case detect clock failure.Analog feature is: the analog to digital converter of 10 maximum 16 paths (Analog-to-Digital Converter, A/D), the 500ksps switching rate can be changed under park mode and idle pulley, 2 analog comparators with I/O configuration able to programme.The peripheral hardware characteristic is: two 3 line/4 line SPI modules, utilize 4 grades of fifo buffer supports, 4 kinds of frame patterns: the I2C of two how master/slave dynamic model formulas of support and 7/10 bit addressings
TMModule, two UART modules, support RS-232, RS-485 and LIN1.2, provide clock, calendar and alarm clock function, 5 16 bit timing device/counters with pre-divider able to programme, numeral I/O pin can be configured to open-drain output, maximum 5 exterior interrupt.
In data acquisition and sensor design, the energy data linearity of current sample chip: in 1000: 1 dynamic ranges, the linearity is ± 0.1%, function in the sheet: can measure electric energy (gaining merit), I*V, IRMS and VRMS, has electric energy-pulses switch function, can not need microcontroller from serial EEPROM intelligence " bootstrap ", AC or DC system calibration, has mechanical register/stepper motor driver, meet IEC687/1036, JIS industrial standard, power consumption＜12mW, the shunt interface of optimizing, V is to the phase compensation of I, single supply ground reference signal, 2.5V reference voltage (maximum temperature is floated 60ppm/ ℃) in the sheet, simple three-way digital serial interface, WatchDog Timer, interior charged source monitor, power configuration: VA+=+5V; VA-=0V; VD+=+3.3V～+ 5V.The chip temperature device can replace the LM75 of industrial standard fully, and good temperature accuracy (0.125 ℃) is provided, and the power supply of individual devices can exceed the scope of 2.8V～5.5V.Small-sized 8 pin encapsulation: SO8 and TSSOP8, has the I2C bus interface, can connect nearly 8 devices on the same bus, supply voltage scope: 2.8V～5.5V, temperature range :-55 ℃～+ 125 ℃, provide 11 ADC of 0.125 ℃ precision, temperature accuracy: be ± 2 ℃ in the time of-25 ℃～+ 100 ℃, be ± 3 ℃ in the time of-55 ℃～+ 125 ℃, Programmable Temperature threshold value and hysteresis set point.In order to reduce power consumption, consumed current is 3.5uA only under the shutdown mode, and device can be used as an independently temperature controller when powering on.Esd protection: JESD22-A114 is 2000V HBM, and JESD22-A115 is that 200V and JESD22-C101 are 1000V CDM.The JESDEC standard JESD78 that surpasses 100mA will carry out bolt-lock test (Latch-up testing).Humidity sensor characteristic: the linear output of integrated, voltage signal, the convenient use; Resistance to chemical attack can be used for industrial environment and measures; Can realize the wide region measurement of 0--100%RH humidity; It is stable, accurately reliable to work long hours; Recovery time is short behind the high humidity; Miniaturization, suitable multiple applications.Sulphur hexafluoride sensor performance: to the high sensitive of R-134a; Long-life, low-power consumption; The later stage circuit is simple; Ceramic bases, anti-environment capacity is strong; Measuring range: 100-3,000ppm; Sensitivity (resistance ratio): 0.5-0.65; Heater voltage: 5V ± 0.2VAC/DC; Circuit voltage: 24VAC/DC.
All be the 10kV voltage circuit in the 10kV ring main unit, do not have low-tension supply.And the operation steady in a long-term of this equipment needs reliable power supply, takes outside commercial power supply not only dangerous, and cost is also not little, infeasible substantially.Power supply supply solution is as follows under the situation of source at the scene: we take several different methods comprehensively to solve the powerup issue under the non-transformer situation in the 10kv ring main unit: 1, utilize the load current of ring main unit cable, employing electromagnetic field inducing principle is obtained energy (as shown in Figure 5); 2, can also utilize solar cell to obtain solar energy, replenish because the too little problem of load current inductive energy; 3, the running frequency of control cpu reduces the power consumption of equipment, and the equipment operation electric current is remained on below the 35mA.Charging control mainly comprise mainly fill, all fill, the triphasic automatic conversion of floating charge, the automatic conversion from the discharge condition to the charged state, charging procedure is judged and is stopped filling aspect such as control.Grasp correct control method, help improving charge in batteries efficient and useful life.Main fill, all fill, the automatic conversion in each stage of floating charge: at present, domestic most of charge power supply still adopt mainly fill, all fill, floating charge three stage charging method realize the charging to storage battery.The accumulator voltage value of setting transfer point is adopted in the automatic conversion in each stage of charging, when actual current or magnitude of voltage reach set point, i.e. and conversion automatically.Level of charge is judged: when storage battery is charged, must judge the level of charge of storage battery at any time, so that the size of control charging current.Judge the main method of level of charge: detect accumulator voltage and judge.When accumulator voltage and its rated value differ big, be described the charging initial stage that is in; When both differences are very little, illustrate near being full of.Stop filling control: behind the storage battery full charge, must in time cut off charging current, otherwise giving vent to anger in a large number will appear in storage battery, dehydration and temperature rise etc. overcharge reaction, the useful life of directly jeopardizing storage battery.Therefore, must monitor the charge condition of storage battery at any time, guarantee the battery full charge and don't overcharge.Stop filling control method: behind the battery full charge, its terminal voltage will present downward trend, and the moment that cell voltage can be occurred negative growth in view of the above fills constantly as stopping.Compare with temperature control method, this method response speed is fast.
Application terminal software major function is as follows:
1, real time data is consulted module; Temperature, ambient humidity, each cable load condition, the isoparametric real-time inquiry of on off state of cable elbow type head are provided;
2, the storage of history parameters; Historical temperature curve, load curve, moisture curve is isoparametric consults the inquiry of historical on off state;
3, contain historical failure inquiry, printing function;
4, show the load early warning signal;
5, displays temperature early warning signal;
6, show sulphur hexafluoride leakage alarm signal.
The content that is not described in detail in this specification belongs to this area professional and technical personnel's known prior art.
Claims (10)
1. high pressure ring cabinet real-time state monitoring device, comprise server end and the monitoring terminal that mates with the high pressure ring cabinet, described server end links to each other by wireless network with described monitoring terminal, server end comprises data server and the some supervisory computers that link to each other with data server, described monitoring terminal comprises main controller and some feeder line measuring units, main controller links to each other with some feeder line measuring units respectively, it is characterized in that: adopt the CS5460 chip in the described feeder line measuring unit, described CS5460 chip is responded to output with the tongue tube on being fixed on high pressure ring cabinet pedestal and is linked to each other, described tongue tube magnet end has been connected with the soft drawn lock of interlock effect, the other end of described soft drawn lock links to each other with high pressure ring high-voltage switch gear Control Shaft cashier's office in a shop, and described main controller connects passive induction type power supplying power supply.
2. high pressure ring cabinet real-time state monitoring device as claimed in claim 1 is characterized in that: comprise temperature sensor, humidity sensor, on off state transducer, current sensor and sulphur hexafluoride transducer in the described feeder line measuring unit.
3. high pressure ring cabinet real-time state monitoring device as claimed in claim 2 is characterized in that: described sulphur hexafluoride transducer is arranged on the bottom in the high pressure ring cabinet sealing cabinet.
4. high pressure ring cabinet real-time state monitoring device as claimed in claim 1, it is characterized in that: described server end also comprises GIS-Geographic Information System GIS server, described GIS server links to each other with described data server, supervisory computer respectively.
5. high pressure ring cabinet real-time state monitoring device as claimed in claim 4, it is characterized in that: described server end also comprises preposition receiving workstation, and described preposition receiving workstation links to each other with described GIS server, data server, some supervisory computers respectively.
6. high pressure ring cabinet real-time state monitoring device as claimed in claim 5 is characterized in that: described preposition receiving workstation links to each other with GIS server, data server, some supervisory computers by interface server.
7. high pressure ring cabinet real-time state monitoring device as claimed in claim 1 is characterized in that: comprise Power Monitoring Unit in the described main controller.
8. high pressure ring cabinet real-time state monitoring device as claimed in claim 1 is characterized in that: comprise ring main unit gate inhibition monitoring alarm module in the described main controller.
9. high pressure ring cabinet real-time state monitoring device as claimed in claim 1 is characterized in that: comprise the electriferous state alarm module in the described main controller.
10. high pressure ring cabinet real-time state monitoring device as claimed in claim 1, it is characterized in that: described main controller is provided with the GSM antenna.
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| CN2010201303225U CN201616712U (en) | 2010-03-09 | 2010-03-09 | High-voltage ring network switchgear real-time status monitoring device |
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| CN2010201303225U CN201616712U (en) | 2010-03-09 | 2010-03-09 | High-voltage ring network switchgear real-time status monitoring device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255388A (en) * | 2011-07-18 | 2011-11-23 | 航天科工深圳（集团）有限公司 | Distributed distribution network terminal device |
| CN102566621A (en) * | 2010-12-29 | 2012-07-11 | 上海市电力公司 | Wireless temperature monitoring system for electric power device |
| CN103198625A (en) * | 2013-03-28 | 2013-07-10 | 国家电网公司 | Sulfur hexafluoride (SF6) leakage alarm system based on global system for mobile communication (GSM) short message module |
| CN103412226A (en) * | 2013-08-27 | 2013-11-27 | 国家电网公司 | State monitoring system of ring main unit |
| CN103941677A (en) * | 2014-03-28 | 2014-07-23 | 江苏高雷德电力科技有限公司 | Comprehensive intelligent monitoring system of ring main unit |
| CN103995210A (en) * | 2014-04-15 | 2014-08-20 | 刘骐畅 | Monitoring system and method suitable for underground cable distribution system |
| CN107359699A (en) * | 2016-08-31 | 2017-11-17 | 天津安捷公共设施服务有限公司 | A kind of wireless status monitoring module |
| CN108507628A (en) * | 2018-06-27 | 2018-09-07 | 国网福建省电力有限公司 | Based on wireless Zigbee network intelligence ring main unit on-line monitoring system and monitoring method |
-
2010
- 2010-03-09 CN CN2010201303225U patent/CN201616712U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102566621A (en) * | 2010-12-29 | 2012-07-11 | 上海市电力公司 | Wireless temperature monitoring system for electric power device |
| CN102255388A (en) * | 2011-07-18 | 2011-11-23 | 航天科工深圳（集团）有限公司 | Distributed distribution network terminal device |
| CN102255388B (en) * | 2011-07-18 | 2013-12-18 | 航天科工深圳（集团）有限公司 | Distributed distribution network terminal device |
| CN103198625A (en) * | 2013-03-28 | 2013-07-10 | 国家电网公司 | Sulfur hexafluoride (SF6) leakage alarm system based on global system for mobile communication (GSM) short message module |
| CN103412226A (en) * | 2013-08-27 | 2013-11-27 | 国家电网公司 | State monitoring system of ring main unit |
| CN103941677A (en) * | 2014-03-28 | 2014-07-23 | 江苏高雷德电力科技有限公司 | Comprehensive intelligent monitoring system of ring main unit |
| CN103995210A (en) * | 2014-04-15 | 2014-08-20 | 刘骐畅 | Monitoring system and method suitable for underground cable distribution system |
| CN107359699A (en) * | 2016-08-31 | 2017-11-17 | 天津安捷公共设施服务有限公司 | A kind of wireless status monitoring module |
| CN108507628A (en) * | 2018-06-27 | 2018-09-07 | 国网福建省电力有限公司 | Based on wireless Zigbee network intelligence ring main unit on-line monitoring system and monitoring method |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20110309 |