CN102298106A - FPGA (field programmable gate array)-based arc monitoring system in valve hall - Google Patents
FPGA (field programmable gate array)-based arc monitoring system in valve hall Download PDFInfo
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- CN102298106A CN102298106A CN2011101300160A CN201110130016A CN102298106A CN 102298106 A CN102298106 A CN 102298106A CN 2011101300160 A CN2011101300160 A CN 2011101300160A CN 201110130016 A CN201110130016 A CN 201110130016A CN 102298106 A CN102298106 A CN 102298106A
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Abstract
The invention relates to an FPGA (field programmable gate array)-based arc monitoring system in a valve hall, belonging to the field of online monitoring of electrical power systems. The system comprises a converter valve, an arc light sensor, an arc monitoring device, an Ethernet switch and an arc monitoring system background, wherein the converter valve is internally provided with the arc light sensor which is connected to the arc monitoring device by plastic optical fibers; the arc monitoring device is connected to the Ethernet switch by five types of shielding network cables or multimode optical fibers; and the Ethernet switch is connected to the arc monitoring system background by the five types of shielding network cables. The system is simple in the structure, lower in the cost, convenient to install, flexible in networking, strong in antijamming capability, and suitable for the online monitoring of converter valves in the closed valve hall with a strong electromagnetic environment.
Description
Technical field
The present invention relates to a kind of valve Room electric arc monitoring systems, belong to electric system on-line monitoring field based on FPGA.
Background technology
Since the eighties in last century, high voltage dc transmission technology obtains develop rapidly in the interconnected and remote large capacity transmission of electrical network field.Because have and advantages such as system frequency is irrelevant, loss is little, transmission capacity is big, economy is outstanding, the proportion of direct current transportation in China's planning for the expansion of power grids greatly improves.HVDC converter substation is a key point of finishing AC-DC conversion in the DC transmission system, by alternating current equipments such as converter power transformer, alternating-current switch equipment, alternating current filter with finish the converter valve and the valve Room, smoothing reactor, dc switch equipment, control and the protective device etc. that exchange with direct current conversion and form.These equipment layout are corresponding alternating-current switch field, the valve Room and control territory, block in the station.Wherein, the valve Room is used to arrange converter valve, and converter valve is the heart of HVDC converter substation, and its safe reliability is directly determining the success or failure of direct current transportation.
With ± the 800kV DC transmission engineering is the method for designing in the example explanation converter valve and the valve Room: ± 800kV DC transmission engineering is the bipolarity wiring, every grade is adopted two 12 flutter valve groups to be connected in series, each 12 flutter valve group is provided with a valve Room separately, therefore each current conversion station is provided with 4 valve Rooms, 6 seat valve towers are all arranged in the high-pressure valve Room and the low pressure valve Room, and every seat valve tower is made up of some converter valve.
Converter valve is made up of numerous thyristors, absorption circuit, equalizing resistance, equalizing capacitance and valve reactor, single valve generally contains tens even a hundreds of thyristor, and thyristor is the power electronic devices of comparison fragility, the voltage and current intensity of bearing all has strict restriction, and its reliability is worth paying close attention to.Aging along with the variation of outside running environment and thyristor, converter valve is easy to break down, and power electronic devices often is attended by the generation of electric arc when breaking down.The valve Room is a complete airtight running environment, and the inside converter valve is numerous, after a certain device failure; though protective relaying device can rapid reaction; the primary power in the excision valve Room prevents the expansion of accident, is which converter valve breaks down but but can not locate.
At the orientation problem of above-mentioned converter valve fault flashing, mainly search malfunctioning module with detecting one by one at present by range estimation.The shortcoming of this way is: some fault does not have obvious cosmetic damage, and range estimation can not detect fault; Detecting one by one wastes time and energy, and brings recessive the damage might for the non-fault module; Repair time is long, might cause system oscillation, influences electric power netting safe running.
Summary of the invention
The invention provides a kind of valve Room electric arc monitoring systems based on FPGA, be used for monitoring the situation of power electronic devices generation electric arc flashover in the DC transmission system valve Room, and provide alarm signal and locating information, with the orientation problem of fault converter valve behind the on-line monitoring that solves valve Room electric arc and the arc fault.
The present invention adopts following technical scheme for solving its technical matters:
A kind of valve Room electric arc monitoring systems based on FPGA comprises converter valve, arc photosensor, Electric arc monitoring device, Ethernet switch, electric arc monitoring systems backstage; Wherein, arc photosensor is installed in the converter valve, arc photosensor is connected to the Electric arc monitoring device by plastic optical fiber, the Electric arc monitoring device is connected to Ethernet switch by Category 5, Shielded netting twine or multimode optical fiber, and Ethernet switch is connected to the electric arc monitoring systems backstage by the Category 5, Shielded netting twine.
Described Electric arc monitoring device is the n platform, and n is greater than 0 less than 256 integer, and every Electric arc monitoring device can be connected with 1-16 arc photosensor by plastic optical fiber.
Described Electric arc monitoring device comprises photoelectric conversion unit, FPGA unit, 100 m ethernet interface unit, toggle switch and LED light, photoelectric conversion unit is connected with the FPGA unit, toggle switch is connected to the FPGA unit, LED light is by the FPGA unit drives, and the FPGA unit is connected with the 100 m ethernet interface unit is two-way.
Described FPGA unit comprises logic judgment module, message molded tissue block, ethernet control module, LED driver module and toggle switch identification module, logic judgment module is connected with the message molded tissue block, the toggle switch identification module provides ethernet address for the message molded tissue block, the message molded tissue block provides indication information for the LED driver module, the message molded tissue block is connected with ethernet control module is two-way, and ethernet control module comprises that initialization section, message receive and message sends.
Described toggle switch identification module comprises two groups of 8 toggle switchs and 20 led state pilot lamp, two groups of toggle switchs are set the IP address and the subnet mask of this machine, 20 LED light difference indicating device running statuses, device alarm status, Ethernet transmit status, Ethernet accepting state and 16 tunnel arc probe states.
Described electric arc monitoring systems backstage is meant the PC that valve Room electric arc monitoring systems software is installed, electric arc monitoring systems software is connected with each Electric arc monitoring device by Ethernet, collect the Monitoring Data of each road arc photosensor, real-time judge has or not the generation of arc fault; When arc photosensor detects arc signal, monitoring system software will provide the sound and light signal of alarm and show that road arc photosensor detects arc signal.
Described arc photosensor adopts pure optics passive sensor, and by the plastic optical fiber transmitting optical signal, photoelectric conversion section is positioned in the strong Electric arc monitoring device of antijamming capability.
Beneficial effect of the present invention is as follows:
1, system adopts the passive arc photosensor of pure optics, and by the plastic optical fiber transmitting optical signal, is not subjected to electromagnetic interference (EMI), the reliability height.
2, adopt the FPGA of pure hardware to realize logic determines and message function of organization, compare, have strong, the fireballing characteristics of antijamming capability with traditional C PU.
3, expand a plurality of Electric arc monitoring devices by Ethernet switch, total system can insert 255 table apparatus at most, can connect nearly 4080 of arc photosensors, and monitoring range is big, and system architecture is flexible.
4, monitoring software can be located the position of each arc photosensor, can help the operating maintenance personnel very first time accurately to locate the converter valve of damaging, and shortens the repair time, and the accident that prevents enlarges.
5, system architecture is simple, and cost is lower, and is easy for installation, networking flexibility, and antijamming capability is strong, is suitable at forceful electric power magnetic environment, airtight valve Room converter valve on-line monitoring.
Description of drawings
Fig. 1 is a system construction drawing of the present invention.
Fig. 2 is an Electric arc monitoring device cut-away view among the present invention.
Fig. 3 is a FPGA unit cut-away view among the present invention.
Embodiment
Be described in further detail below in conjunction with the technical scheme of accompanying drawing the invention:
Fig. 1 is a system construction drawing of the present invention.This system comprises converter valve, arc photosensor, Electric arc monitoring device, Ethernet switch, electric arc monitoring systems backstage; Wherein, arc photosensor is installed in the converter valve, arc photosensor is connected to the Electric arc monitoring device by plastic optical fiber, the Electric arc monitoring device is connected to Ethernet switch by Category 5, Shielded netting twine or multimode optical fiber, and Ethernet switch is connected to the electric arc monitoring systems backstage by the Category 5, Shielded netting twine.Converter valve can be monitored in the electric arc monitoring systems backstage.The arc photosensor of one pure optics is installed in the converter valve that needs to detect, is adjusted angle during installation, make arc photosensor can detect the electric arc flashover that all corners take place in the converter valve.Each arc photosensor links to each other with the Electric arc monitoring device by plastic optical fiber, and every Electric arc monitoring device can connect 16 road arc photosensors at most.The Electric arc monitoring device can directly be connected to the electric arc monitoring systems backstage by ethernet line, also can link to each other with the backstage by Ethernet switch.After using Ethernet switch, the electric arc monitoring systems backstage can connect n platform Electric arc monitoring device, enlarges the system monitoring scope, and n is less than 256 integer greater than 0.Described arc photosensor utilizes optical lens and wavelength shifter arc optical signal to be converted to the ruddiness that is adapted at transmitting in the plastic optical fiber.Described electric arc monitoring systems backstage is meant the PC that valve Room electric arc monitoring systems software is installed, electric arc monitoring systems software is connected with each Electric arc monitoring device by Ethernet, collect the Monitoring Data of each road arc photosensor, real-time judge has or not the generation of arc fault; When arc photosensor detects arc signal, electric arc monitoring systems software will provide the sound and light signal of alarm and show that road arc photosensor detects arc signal.Arc photosensor adopts pure optics passive sensor, and by the plastic optical fiber transmitting optical signal, photoelectric conversion section is positioned in the strong Electric arc monitoring device of antijamming capability.
Fig. 2 is an Electric arc monitoring device cut-away view among the present invention, the Electric arc monitoring device comprises photoelectric conversion unit, FPGA unit, 100 m ethernet interface unit, toggle switch and LED light, photoelectric conversion unit is connected with the FPGA unit, toggle switch is connected to the FPGA unit, LED light is by the FPGA unit drives, and the FPGA unit is connected with the 100 m ethernet interface unit is two-way.16 photoelectric conversion units can link to each other with 16 arc photosensors by plastic optical fiber, photoelectric conversion unit comprises photodiode, current amplifier and quick comparer, be responsible for the light signal that transmits in the plastic optical fiber is converted to digital electric signal, the 100 m ethernet interface unit is divided into electrical interface and optical interface two parts, can adopt Category 5, Shielded line or multimode optical fiber to be connected to higher level unit (Ethernet switch or background computer).After powering on, device, and the Ethernet interface chip carried out initialization at first according to the IP address and the subnet mask of good this machine of toggle switch setting state.When device with after the higher level unit is connected, the communications status pilot lamp glimmers; After a certain road arc photosensor detected arc optical signal, corresponding arc light pilot lamp was lighted, and this lamp must just can extinguish after background computer is assigned the involution order.
Fig. 3 is a FPGA unit cut-away view among the present invention, the FPGA unit comprises logic judgment module, message molded tissue block, ethernet control module, LED driver module and toggle switch identification module, logic judgment module is connected with the message molded tissue block, the toggle switch identification module provides ethernet address for the message molded tissue block, the message molded tissue block provides indication information for the LED driver module, the message molded tissue block is connected with ethernet control module is two-way, and ethernet control module comprises that initialization section, message receive and message sends.Logic judgment module is responsible for implementing to detect the digital signal that 16 photoelectric conversion units transmit, and has judged whether that arc fault produces; The message molded tissue block is organized into the Ethernet message that meets ICP/IP protocol with the result of logic determines; Ethernet control module is responsible for the initialization of Ethernet interface unit and sends receiving the Ethernet message.The toggle switch identification module comprises two groups of 8 toggle switchs and 20 led state pilot lamp, two groups of toggle switchs are set the IP address and the subnet mask of this machine, 20 LED light difference indicating device running statuses, device alarm status, Ethernet transmit status, Ethernet accepting state and 16 tunnel arc probe states.Logic judgment module is at first carried out filtering to the output signal of photoelectric conversion unit, has judged whether that then arc fault takes place.When detecting arc fault, the message molded tissue block is organized message according to the probe sequence number that detects arc optical signal, sends information by the message sending module, lights corresponding LED light by the LED driver module simultaneously.Only when the message receiver module receives the involution order of background computer, the message molded tissue block will extinguish corresponding LED light.
Native system is that photoelectric sense technology, extensive FPGA (Field Programmable Gate Array) technology and high-speed communication technology are combined, realized the electric arc flashover under the abominable electromagnetic environment is detected and the location, improved the functional reliability of intra-valve hall converter valve, reduce fault handling time, prevented the expansion of power outage.
Claims (7)
1. the valve Room electric arc monitoring systems based on FPGA is characterized in that: comprise converter valve, arc photosensor, Electric arc monitoring device, Ethernet switch, electric arc monitoring systems backstage; Wherein, arc photosensor is installed in the converter valve, arc photosensor is connected to the Electric arc monitoring device by plastic optical fiber, the Electric arc monitoring device is connected to Ethernet switch by Category 5, Shielded netting twine or multimode optical fiber, and Ethernet switch is connected to the electric arc monitoring systems backstage by the Category 5, Shielded netting twine.
2. the valve Room electric arc monitoring systems based on FPGA according to claim 1, it is characterized in that: described Electric arc monitoring device is the n platform, n is greater than 0 less than 256 integer, and every Electric arc monitoring device can be connected with 1-16 arc photosensor by plastic optical fiber.
3. the valve Room electric arc monitoring systems based on FPGA according to claim 1 and 2, it is characterized in that: described Electric arc monitoring device comprises photoelectric conversion unit, FPGA unit, 100 m ethernet interface unit, toggle switch and LED light, photoelectric conversion unit is connected with the FPGA unit, toggle switch is connected to the FPGA unit, LED light is by the FPGA unit drives, and the FPGA unit is connected with the 100 m ethernet interface unit is two-way.
4. the valve Room electric arc monitoring systems based on FPGA according to claim 3, it is characterized in that: described FPGA unit comprises logic judgment module, the message molded tissue block, ethernet control module, LED driver module and toggle switch identification module, logic judgment module is connected with the message molded tissue block, the toggle switch identification module provides ethernet address for the message molded tissue block, the message molded tissue block provides indication information for the LED driver module, the message molded tissue block is connected with ethernet control module is two-way, and ethernet control module comprises initialization section, message receives and message sends.
5. the valve Room electric arc monitoring systems based on FPGA according to claim 4, it is characterized in that: described toggle switch identification module comprises two groups of 8 toggle switchs and 20 led state pilot lamp, two groups of toggle switchs are set the IP address and the subnet mask of this machine, 20 LED light difference indicating device running statuses, device alarm status, Ethernet transmit status, Ethernet accepting state and 16 tunnel arc probe states.
6. the valve Room electric arc monitoring systems based on FPGA according to claim 1, it is characterized in that: described electric arc monitoring systems backstage is meant the PC that valve Room electric arc monitoring systems software is installed, electric arc monitoring systems software is connected with each Electric arc monitoring device by Ethernet, collect the Monitoring Data of each road arc photosensor, real-time judge has or not the generation of arc fault; When arc photosensor detects arc signal, monitoring system software will provide the sound and light signal of alarm and show that road arc photosensor detects arc signal.
7. the valve Room electric arc monitoring systems based on FPGA according to claim 1, it is characterized in that: described arc photosensor adopts pure optics passive sensor, and by the plastic optical fiber transmitting optical signal, photoelectric conversion section is positioned in the strong Electric arc monitoring device of antijamming capability.
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| CN201110130016.0A CN102298106B (en) | 2011-05-19 | 2011-05-19 | FPGA (field programmable gate array)-based arc monitoring system in valve hall |
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| CN201110130016.0A CN102298106B (en) | 2011-05-19 | 2011-05-19 | FPGA (field programmable gate array)-based arc monitoring system in valve hall |
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Cited By (12)
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| CN103336223A (en) * | 2013-06-14 | 2013-10-02 | 上海叠泉信息科技有限公司 | Fault arc detecting and positioning system and method |
| CN103424664A (en) * | 2012-05-14 | 2013-12-04 | 南京弘毅电气自动化有限公司 | Optical sensor achieving switch cabinet flashover detection |
| CN103513650A (en) * | 2013-09-24 | 2014-01-15 | 许继电气股份有限公司 | High-voltage direct-current electricity transmission converter valve control equipment and wave recording monitoring system thereof |
| CN103809043A (en) * | 2012-11-08 | 2014-05-21 | 南京南瑞继保电气有限公司 | Detection discrimination method of arc light fault |
| CN104459471A (en) * | 2014-12-17 | 2015-03-25 | 施耐德万高（天津）电气设备有限公司 | Arc fault detection device based on POE technology |
| CN104953567A (en) * | 2015-07-14 | 2015-09-30 | 南京中凯光电技术有限公司 | Arc light protection system and method for feed-out circuit in switch cabinet |
| CN107291008A (en) * | 2017-06-26 | 2017-10-24 | 北京机械设备研究所 | The monitoring system and monitoring method of a kind of equipment state |
| CN107884690A (en) * | 2017-11-14 | 2018-04-06 | 南京工程学院 | GIS switch partial discharge on-line monitoring systems and method based on low-light level sensor |
| CN109783408A (en) * | 2019-01-24 | 2019-05-21 | 湖南恒茂高科股份有限公司 | Connectivity port localization method, device and electronic equipment |
| CN110426329A (en) * | 2018-11-30 | 2019-11-08 | 中国南方电网有限责任公司超高压输电公司广州局 | Converter station valve hall particulate matter on-line monitoring method, apparatus and system |
| CN111426920A (en) * | 2020-04-16 | 2020-07-17 | 许继集团有限公司 | Fire/arc detection device and method applied to high-voltage direct-current transmission converter valve |
| CN114123498A (en) * | 2021-11-16 | 2022-03-01 | 许继集团有限公司 | Wave recording control system for valve control equipment of direct-current transmission system |
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| CN103424664A (en) * | 2012-05-14 | 2013-12-04 | 南京弘毅电气自动化有限公司 | Optical sensor achieving switch cabinet flashover detection |
| CN103809043A (en) * | 2012-11-08 | 2014-05-21 | 南京南瑞继保电气有限公司 | Detection discrimination method of arc light fault |
| CN103336223A (en) * | 2013-06-14 | 2013-10-02 | 上海叠泉信息科技有限公司 | Fault arc detecting and positioning system and method |
| CN103513650B (en) * | 2013-09-24 | 2015-12-02 | 许继电气股份有限公司 | The record ripple control method of converter valve opertaing device |
| CN103513650A (en) * | 2013-09-24 | 2014-01-15 | 许继电气股份有限公司 | High-voltage direct-current electricity transmission converter valve control equipment and wave recording monitoring system thereof |
| CN104459471A (en) * | 2014-12-17 | 2015-03-25 | 施耐德万高（天津）电气设备有限公司 | Arc fault detection device based on POE technology |
| CN104953567A (en) * | 2015-07-14 | 2015-09-30 | 南京中凯光电技术有限公司 | Arc light protection system and method for feed-out circuit in switch cabinet |
| CN104953567B (en) * | 2015-07-14 | 2017-12-01 | 南京中凯光电科技股份有限公司 | A kind of arc light protection system and method for being used in switch cubicle feed out circuit |
| CN107291008A (en) * | 2017-06-26 | 2017-10-24 | 北京机械设备研究所 | The monitoring system and monitoring method of a kind of equipment state |
| CN107884690A (en) * | 2017-11-14 | 2018-04-06 | 南京工程学院 | GIS switch partial discharge on-line monitoring systems and method based on low-light level sensor |
| CN110426329A (en) * | 2018-11-30 | 2019-11-08 | 中国南方电网有限责任公司超高压输电公司广州局 | Converter station valve hall particulate matter on-line monitoring method, apparatus and system |
| CN109783408A (en) * | 2019-01-24 | 2019-05-21 | 湖南恒茂高科股份有限公司 | Connectivity port localization method, device and electronic equipment |
| CN111426920A (en) * | 2020-04-16 | 2020-07-17 | 许继集团有限公司 | Fire/arc detection device and method applied to high-voltage direct-current transmission converter valve |
| CN114123498A (en) * | 2021-11-16 | 2022-03-01 | 许继集团有限公司 | Wave recording control system for valve control equipment of direct-current transmission system |
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Effective date of registration: 20170605 Address after: Fei Lu Yuhua Economic Development Zone in Nanjing City, Jiangsu Province, No. 12 210039 Patentee after: Nanjing Hongyi Electrical Automation Co.,Ltd. Address before: 211100 Jiangsu City, Jiangning Province Development Zone, West Road, No. 8 Buddha Patentee before: HOHAI University |
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Denomination of invention: FPGA (field programmable gate array)-based arc monitoring system in valve hall Effective date of registration: 20190717 Granted publication date: 20140611 Pledgee: Nanjing Bank Co.,Ltd. Nanjing North Branch Pledgor: Nanjing Hongyi Electrical Automation Co.,Ltd. Registration number: 2019320000333 |
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Date of cancellation: 20200813 Granted publication date: 20140611 Pledgee: Nanjing Bank Co.,Ltd. Nanjing North Branch Pledgor: NANJING HONGYI ELECTRICAL AUTOMATION Co.,Ltd. Registration number: 2019320000333 |