CN203434750U - Coal mine override trip-preventing intelligent monitoring system based on synchronous measurement information system - Google Patents
Coal mine override trip-preventing intelligent monitoring system based on synchronous measurement information system Download PDFInfo
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Abstract
The utility model discloses a coal mine override trip-preventing intelligent monitoring system based on a synchronous measurement information system. The coal mine override trip-preventing intelligent monitoring system comprises a GPS time service server, which is used to provide PPS second pulse signals and obtain a system time, above a coal mine, and a plurality of synchronous data acquisition controllers disposed in each of sub-monitoring stations underground; after the synchronous data acquisition controllers obtain the system time, the synchronous data acquisition controllers perform automatic timing to maintain accurate internal work clocks; each synchronous data acquisition controller is in a communication relationship with a FPGA data acquisition module; a master server is connected with override trip preventing devices for data interaction; and each FPGA data acquisition module is connected with a signal acquisition conditioning board. By utilizing the high-precision GPS synchronous time service device installed above the coal mine, synchronization of data of the override trip preventing devices installed in electric power substations underground and data information sharing are achieved, fault positions can be accurately and reliably determined, and fault branch circuits can be timely and reliably cut off to do not affect normal power supply of other lines.
Description
Technical field
The utility model, about a kind of anti-overstep tripping intelligent monitor system, refers to a kind of colliery anti-overstep tripping intelligent monitor system based on wide area synchro measure information system (Wide Area Measurement System, WAMS) especially.
Background technology
Current colliery Underground High-Voltage Power Network; because being subject to the restriction of the various factorss such as economy, technology; the trunk line type of the control step by step portrait network mostly all being formed by multistage stub cable (100/m～1200m); traditional high-voltage complex protection has not met the needs that reality is produced; often cause misoperation or even the tripping of switch to do; cause the large-area power-cuts of colliery electric power system, have a strong impact on mine safety production.
Colliery Underground High-Voltage Power Network comprehensive protector is mainly comprised of two parts: selectivity high--voltage leakage protective system with prevent overstep tripping protection system.
(1) selectivity high--voltage leakage protective system
Correct route selection problem during mining high-voltage electrical network generation single-phase earth leakage fails to be well solved for many years always.Because colliery downhole neutral point is the earthing mode adopting through arc suppression coil; because the intervention of arc suppression coil has balanced out the electric current while there is electric leakage; make the fault current that collects very faint, therefore usually can cause misoperation, even select failsafe circuit if adopt conventional principle to realize optionally high--voltage leakage protective.
(2) Anti-override trip protection system
In recent years, along with improving constantly of coal production mechanization, automaticity, underground power supply used capacity constantly increases, line voltage improves constantly, and the continuous increase of high voltage supply distance is more and more higher to colliery underground power supply system reliability, fail safe and successional requirement.Because Working Environment of Underground Mine is severe; load fluctuation is large; operating mode is very unstable; gas and coal dust gather, drip roof fall accident etc. can make insulation of electrical installation intensity reduce gradually, safeguards the reasons such as wire fracture of improper or operating mistake, transmission line due to operating personnel simultaneously, often there will be electric leakage and single phase ground fault; if get rid of not in time; line insulation will bear line voltage, and long-time running will cause insulation breakdown, develop into three-phase or line to line fault accident.The arc energy that single-phase earthing, phase fault produce while occurring can cause gas, coal-dust explosion, directly jeopardizes personal safety and mine and produces.Flame-proof mine high and low voltage switch is the main protection of high-low pressure electric power system terminated line under coal mine, and it has played the effect of protection high-tension cable, transformer and electric equipment.But various high pressure protectors itself have some shortcomings, the closure due to data, causes the formation of " information island ", and the difficulty of overstep tripping cannot overcome always.
Utility model content
In view of this, main purpose of the present utility model is to provide a kind of colliery anti-overstep tripping intelligent monitor system based on synchro measure information system.
For achieving the above object, the utility model provides a kind of colliery anti-overstep tripping intelligent monitor system based on synchro measure information system, it is characterized in that, its aboveground GPS time service server including for PPS pps pulse per second signal being provided and obtaining system time carries out automatic correcting time to maintain the synchronous data collection controller of accurate internal work clock with a plurality of the obtaining that is positioned at each sub-monitoring station of down-hole after this system time, each synchronous data collection controller carries out interactive communication with this GPS time service server by fiber optic Ethernet respectively, each synchronous data collection controller is communicated by letter with FPGA data acquisition module, this synchronous data collection controller the result that this FPGA data collecting module collected is processed are sent to director server by Ethernet, this director server and host computer interactive communication, this synchronous data collection controller is received the control command of this host computer and is carried out by director server, this director server is connected with the anti-overstep tripping device that carries out data interaction, this FPGA data acquisition module is connected with signal collection modulation plate.
Described GPS time service server includes to be processed network data, realize the aboveground local processing module of clock signal precise synchronization, the aboveground management configuration module that the parameter of described GPS time service server is configured, generate time service broadcast data packet, and this packet is issued to the aboveground network process module on synchronous data collection controller described in each and the aboveground power management module of working power is provided, this aboveground management configuration module wherein, aboveground network process module carries out interactive communication with this aboveground local processing module respectively, this aboveground power management module is connected with this aboveground local processing module.
Described aboveground local processing module adopts ARM Cortex core processor.
Described in each, synchronous data collection controller includes for time service synchronous interaction and the mutual down-hole processing module of data acquisition, the down-hole management configuration module that the parameter of described GPS time service server is configured, realize the communication task of the Ethernet of data, and the downhole network processing module of the industry ethernet transmission packet by the at a high speed and down-hole power administration module of working power is provided, this down-hole management configuration module and downhole network processing module respectively with this down-hole processing module interactive communication, this down-hole power administration module is connected with this down-hole processing module.
Described down-hole processing module adopts dual chip framework, described down-hole processing module comprises is respectively responsible for the ARM Cortex processor of time service synchronous interaction and the mutual ARM7 processor of data acquisition, between two processor, be equipped with high speed bus interface interactive communication, this ARM Cortex processor and ARM7 processor all with described down-hole management configuration module and downhole network processing module interactive communication.
Described ARM Cortex processor and described aboveground network process module carry out alternately, by fiber optic Ethernet, receiving synchronizing clock signals.
Described ARM7 processor and described FPGA data acquisition module carry out alternately, control the whole flow process of data sampling and processing, and described ARM7 processor communicates by the described director server on Ethernet and upper strata simultaneously.
The bandwidth of described fiber optic Ethernet is 1000M.
Described anti-overstep tripping device includes two fiber optical transceivers, data processing and transport module, electrical network Multichannel Waveform synchronous acquisition module and the quick Executive Module of switching value, wherein this data processing and transport module include the whole network down-going synchronous and schedule process module and transmitting uplink data module, these two fiber optical transceivers are connected with schedule process module and transmitting uplink data module with the whole network down-going synchronous respectively, this data processing is connected by data/address bus with electrical network Multichannel Waveform synchronous acquisition module with transport module, this electrical network Multichannel Waveform synchronous acquisition module is connected by data/address bus with the quick Executive Module of switching value, described gigabit fiber switchboard is connected with the fiber optical transceiver of each anti-overstep tripping device of down-hole respectively by multi beam monomode fiber.
Mine high-voltage fence intelligent monitor system can carry out real-time monitoring and protection to complicated mine power supply system, can effectively solve coalmine high-voltage power network electric leakage problem, effectively prevent the problem of coalmine high-voltage power network overstep tripping.Administrative staff and operator on duty can understand at any time by network monitoring the running status of electric power system, in time electric power system are carried out operational mode, have progressively been realized mine transformer station few people on duty or unattended, have improved labor productivity.This power supply complex automatic system and other supervisory control systems of mine form a whole simultaneously, realize Mine Production automation, decision information, Modern management, realize high-yield and high-efficiency lay a good foundation for mine.
Accompanying drawing explanation
The real-time status figure of the colliery anti-overstep tripping intelligent monitor system of Fig. 1 the utility model based on synchro measure information system;
The structured flowchart of the colliery anti-overstep tripping intelligent monitor system of Fig. 2 the utility model based on synchro measure information system;
Fig. 3 is the structural principle block diagram of the GPS time service server in the utility model;
Fig. 4 is the structural principle block diagram of the synchronous data collection controller in the utility model.
Embodiment
For ease of structure of the present utility model and the effect that reaches are had to further understanding, the existing preferred embodiment that develops simultaneously is by reference to the accompanying drawings described in detail as follows.
As shown in Figures 1 and 2, the colliery anti-overstep tripping intelligent monitor system based on synchro measure information system of the present utility model includes aboveground GPS time service server 1 and a plurality of synchronous data collection controllers 2 that are positioned at each sub-monitoring station of down-hole; The major function of GPS time service server 1 is accurate PPS (the pulses per second providing by GPS module, pulse/sec) pps pulse per second signal, obtain an accurate system time, and this moment is sent to each the sub-monitoring station under ore deposit by Ethernet, the synchronous data collection controller 2 of each sub-monitoring station obtains after this system time, carry out automatic correcting time one time, to maintain an accurate internal work clock; Each synchronous data collection controller 2 major functions are mutual with GPS time service server 1 respectively, maintain an accurate synchronised clock, synchronous data collection controller 2 and FPGA (Field-Programmable Gate Array, field programmable gate array) data acquisition module 3 communications, control the process of data acquisition and processing (DAP), and the result of FPGA data acquisition module 3 acquisition process is sent to director server 4 by Ethernet, resolve the order that director server 4 issues, and control FPGA and carry out.The colliery anti-overstep tripping intelligent monitor system of the utility model based on synchro measure information system also comprises signal collection modulation plate 6 and the anti-overstep tripping device 7 that carries out data interaction with this director server 4, the simulation process front end that this signal collection modulation plate 6 is whole data acquisitions, after signal strength signal intensity is nursed one's health to OK range, then send into FPGA data acquisition module 3 and carry out data acquisition and processing (DAP).
As shown in Figure 3, GPS time service server 1 in the utility model mainly comprises aboveground local processing module 10, GPS time service module 11, aboveground management configuration module 12, aboveground network process module 13 and aboveground power management module 14, wherein GPS time service module 11, aboveground management configuration module 12, aboveground network process module 13 carry out interactive communication with aboveground local processing module 10 respectively, wherein:
GPS time service module 11: in the utility model, high accuracy real-time clock is the key that realizes whole system, take to extract the mode of high accuracy real-time clock from global positioning system (GPS), synchronous base clock as whole system, high-precision GPS time service module is by the special-purpose time service mushroom head antenna of high-gain, aerial gps signal is resolved, under the weak environment of signal, can locate reliably and time service, export a high-precision PPS pps pulse per second signal (20ns RMS), and the corresponding time, positional information, by serial ports, provide standard UTC (Universal Time Coordinated simultaneously, general universal time coordinated) temporal information, benchmark as high-precision GPS time synchronized,
Aboveground management configuration module 12: can be configured the relevant parameter of GPS time service server 1 (as IP address, port numbers, host-host protocol etc.) by this module, and can manage the network processing node of far-end;
Aboveground local processing module 10: local processing adopts high-performance ARM Cortex core processor, real-time network data is processed of energy, and gps time information is resolved, coordinate high-precision PPS pps pulse per second signal, adopt clock synchronous backoff algorithm, realize the precise synchronization of clock signal; Aboveground local processing module adopts high performance ARM Cortex core processor, and the platform of a high performance-price ratio is provided, and reserved enough operands are in order to upgrading simultaneously;
Aboveground network process module 13: this module realizes the communication task of the Ethernet of data, can be by industry ethernet transmission packet at a high speed.ICP/IP protocol stack expense is larger, as adopt software to realize, can take very large system resource, therefore in order to guarantee the real-time of GPS time service processing, in system design process, adopt special chip (as chips W 5300) to process network data, generate time service broadcast data packet, and packet is issued on each synchronous data collection controller 2;
Aboveground power management module 14: it is connected with aboveground local processing module 10, for system provides the power supply of work, the 11 employing+5V power supplies of GPS time service module, remainder adopts 3.3V power supply.
Software for Design
Time service server software adopts modular design philosophy, and whole software is divided into GPS time service receiver module, network service drive software, synchronous time service processing module and external communication module, and the major function of each module is as follows:
1) GPS time service receiver module
GPS time service module is exported high-precision periodicity pps pulse per second signal, after the processor of high-performance Cortex receives this signal, with this pps pulse per second signal, self internal clocking is calibrated, revised the clock synchronous error that the frequency of oscillation deviation due to crystal causes;
2) network service drive software
GPS time service server end adopts high performance special chip to realize the Ethernet of 100Mbps, and converts the Ethernet signal of telecommunication to light signal by fiber optical transceiver, realizes on high speed fibre and transmitting.The height of network service drive software performance, directly has influence on the speed of Internet Transmission, and finally affects the precision of synchronous time service;
3) synchronous time service processing module
GPS time service server adopts udp protocol, periodic broadcast synchronization time service frame, is transferred to the synchronizing network controller of each transformer station of down-hole, after each synchronizing network controller is received this synchronizing signal, with this signal, self internal clocking is calibrated, to realize the function of synchronous time service;
4) external communication module
For GPS time service server being carried out to the operations such as equipment control, parameter setting, program updates, an external communication module must be provided on software view, and design specialized communication protocol and upper computer software, user-friendly and plant maintenance.
As shown in Figure 3, the synchronous data collection controller 2 in the utility model mainly comprises down-hole processing module, down-hole management configuration module 21, downhole network processing module 22 and down-hole power administration module 23, wherein:
Down-hole processing module: adopt dual chip framework, comprise ARM Cortex processor and ARM7 processor, be responsible for respectively that time service is synchronous and data acquisition is mutual, between dual chip, be equipped with high speed bus interface interactive communication, improve the collaborative degree of dual chip, the real-time of assurance system, wherein ARM Cortex processor and ARM7 processor are all connected with down-hole management configuration module and the downhole network processing module of interactive communication;
Down-hole management configuration module 21: can be configured the relevant parameter of GPS time service server 1 (as IP address, port numbers, host-host protocol etc.) by this module, and can manage the network processing node of far-end;
Downhole network processing module 22: this module realizes the communication task of the Ethernet of data, can be by industry ethernet transmission packet at a high speed.ICP/IP protocol stack expense is larger, as adopt software to realize, can take larger system resource, therefore the real-time in order to guarantee that GPS time service is processed, in system design process, adopt special-purpose chip (as chips W 5300) for network data information and processing;
Down-hole power administration module 23: it is connected with down-hole processing module, and the power supply of system works is provided, ARM Cortex processor and ARM7 processor adopting 3.3V power supply.
The aboveground network process module 13 of ARM Cortex processor and GPS time service server carries out alternately, by fiber optic Ethernet, receiving accurate synchronizing clock signals, then local clock is carried out to periodic calibration, the clock synchronous work of completion system; ARM7 processor carries out alternately with FPGA data acquisition module 3 on the one hand, control the whole flow process of data sampling and processing, director server 4 by Ethernet and upper strata communicates on the other hand, by the transfer of data of sampling to the host computer 5 of director server 4 interactive communications, and receive control commands and carry out from host computer 5.In the utility model between double-core by communication interface swap data at a high speed, this Duo-Core Architecture degree of parallelism that raising system is processed from hardware, fully guarantees the precision of GPS time service; And this distributed processing mode has reduced the demand to each chip disposal ability, the hardware cost of system also decreases.Multi-chip scheme is equivalent to system to be divided into several more independently modules, has weakened the degree of coupling between each function of system, has reduced the difficulty that system realizes, and has reduced the construction cycle.
The utility model lost efficacy in order to prevent gps signal to be affected by the external environment, and when GPS time service is adopted to Hot Spare scheme ，Dang mono-road Signal Fail, was switched to immediately on another road signal and carried out synchronous time service.
Reach the object of accurately measuring in real time, the one, under benchmark, carry out synchro measure in unified time, the 2nd, there are enough precision.For the power frequency amount of 50Hz, the synchronous error of 1ms can produce the phase error of 18 °; Guarantee that phase error is 1 °, just necessarily require synchronization accuracy to be no more than 55 μ s.As can be seen here, if take gps time as benchmark carries out synchro measure to each power station institute electric current and voltage, can meet the demands completely.GPS time service module time service precision of the present utility model can reach submicrosecond level, i.e. precision≤1 μ s.This synchro measure process can complete by the synchronous sampling technique based on GPS time service and discrete fast Fourier transform (FFT) algorithm.
And GPS time service need to realize by Ethernet, so just must use 1000M fiber optic Ethernet, fiber optic Ethernet speed is fast, transmission delay and small; Photoelectric conversion device is also to adopt hardware to carry out opto-electronic conversion, and opto-electronic conversion time delay is submicrosecond level equally.In sum, total time delay that the transmission transfer delay of each link of GPS time calibration in network device of the present utility model is added is in 1 μ s.High-precision GPS network lays a solid foundation to the realization of anti-overstep tripping system.
As shown in Figure 4, synchronous data collection controller adopts dual-CPU architecture, adopts Distributed Design thinking on Software for Design, realizes Ethernet drive software, synchronous time service processing module on ARM Cortex kernel; On ARM7 kernel, realize comprehensive criterion algorithm, network service client, the major function of each software is as follows:
1) Ethernet drive software
Synchronous data collection controller adopts high performance special chip to realize the Ethernet of 100Mbps, and converts the Ethernet signal of telecommunication to light signal by fiber optical transceiver, realizes on high speed fibre and transmitting.The height of network service drive software performance, directly has influence on the speed of Internet Transmission, and finally affects the precision of synchronous time service;
2) synchronous time service processing module
Synchronous data collection controller by fiber optic Ethernet, periodically receives the synchronous time service frame of GPS server broadcast, after receiving this synchronizing signal, with this signal, self internal clocking is calibrated, to realize the function of synchronous time service.The object of synchronous time service is that high-voltage signal in order to guarantee FPGA data acquisition unit Dui Ge transformer station is in synchronization collection, to guarantee the consistency of image data, as the judgement foundation of anti-overstep tripping;
3) comprehensive criterion algorithm
After synchronous data collection controller receives Multi-path synchronous high pressure data, need according to default thresholding and logic rules, Dui Ge road high-voltage signal is integrated, whole analyzes current Ge road high-voltage signal, which high pressure total score separates out breaks down, then control relay disengagement failure circuit (time of whole control loop is in ms level) at once, protects whole supply network;
4) network service client
Network service client is transferred to host computer server by the data that collect and analysis result on the one hand, receives on the other hand order and the data of host computer server, carries out operation accordingly, and result is turned back to server.By network service client, aboveground staff can monitor the electric power thus supplied of each transformer station of down-hole in real time, guarantees the reliable and stable operation of Coal Mine Power Distribution System.
FPGA data acquisition module 3 in the utility model gathers 16 road voltage current transformer signals by two AD7606, and the data that collect are carried out to FFT conversion, calculates in real time multistage frequency component, as electric power system fault judgement foundation; And data acquisition is controlled by time synchronized controller, guarantee the synchronism of data acquisition.The result of image data, sends network controller to by 32 buses, and network controller carries out comprehensive criterion analysis to result, for different situations, takes further treatment measures.
As can be seen here, in the design process of FPGA data acquisition module, must guarantee accuracy and the real-time of data acquisition, to guarantee the disposed of in its entirety performance of system.In native system, part of data acquisition adopts the AD7606 bipolarity of ADI company synchronously to adopt ADC, its built-in analog input clamping protection, second order frequency overlapped-resistable filter, follow the tracks of hold amplifier, 16 electric charge reallocation successive approximation type a/d C, digital filter, 2.5V reference voltage source, reference voltage buffering and high speed serialization and parallel interface flexibly, all passages all can, with the throughput rate sampling up to 200kSPS, extremely be applicable to power line monitoring and protection system; Data processing section adopts the high speed FPGA processor of Xinlinx company, utilizes the inner abundant hardware resource of FPGA processor, and parallel processing 16 road real-time data collections fully guarantee the real-time of data processing, improve the response speed of system.
Signal collection modulation plate 6 in the utility model is simulation process front ends of whole data acquisition, adopt instrument transformer Jiang16 road voltage and current signal drawing-in system, and by high-accuracy amplifier, small-signal is amplified, signal strength signal intensity is nursed one's health to OK range and so on, then send into FPGA data acquisition module 3 and carry out data acquisition and processing (DAP).The high frequency environment noise that signal collection modulation plate superposes on the one hand can filtering collection in worksite signal, guarantees the authenticity of signals collecting; On the other hand amplifier power supply is carried out to filtering processing, filtering high frequency ripple, the signal to noise ratio of raising amplifier, the accuracy of assurance signal condition result.
Anti-overstep tripping device in the utility model includes two fiber optical transceivers, data processing and transport module, electrical network Multichannel Waveform synchronous acquisition module and the quick Executive Module of switching value (being relay group), wherein this data processing and transport module include the whole network down-going synchronous and schedule process module and transmitting uplink data module, these two fiber optical transceivers are connected with schedule process module and transmitting uplink data module with the whole network down-going synchronous respectively, this data processing is connected by data/address bus with electrical network Multichannel Waveform synchronous acquisition module with transport module, this electrical network Multichannel Waveform synchronous acquisition module is connected by data/address bus with the quick Executive Module of switching value.
Realize the anti-overstep tripping technology of high-voltage fence, must realize whole network data and sample at accurate synchronization point, the data that obtain are like this just meaningful to electrical energy consumption analysis.Aboveground many standards of GPS/Galileo time service server of the present utility model can effectively address this problem.The major function of GPS time service server is the accurate PPS pps pulse per second signal (being accurate to 30ns) providing by GPS time service main control module, obtain an accurate system time, and sent to each sub-monitoring station of down-hole this moment by Ethernet, the synchronous data collection controller of each sub-monitoring station obtained after this moment, by agreement, carry out automatic delay calibration, cycle during school after, can maintain an accurate internal work clock that the whole network is synchronous.The electrical network Multichannel Waveform synchronous acquisition module of each anti-overstep tripping device can synchronization gathers the waveform of a plurality of circuits, and utilize FPGA (Field-Programmable Gate Array, field programmable gate array) realize the quick identification of unusual waveforms, electrical network Multichannel Waveform synchronous acquisition module is transferred to data processing and transport module by the signal of unusual waveforms by data/address bus, and by fiber optic network and gigabit fiber switchboard, the state of the real time data of each tracking telemetry and command station and fault is uploaded to ground protection measure and control device, this protection measure and control device is monitor supervision platform, this monitor supervision platform be a set of can expanding monitoring platform based on the aboveground of database server and the communication server, this platform can conveniently access internet, be convenient to telemanagement and monitoring, to fully understand the running status of whole high-voltage fence, in addition, by this platform, each monitoring station is passed through to the setting composite door limit value of fiber optic network simultaneously, be very easy to the maintenance to particular scene.
Relay group major function in the utility model is that 16 road control loops are externally provided, with disengagement failure circuit fast and accurately.First the selection of relay will meet the requirement of controlling electric current and voltage, and its less important assurance reliably working time and rapid response speed are beneficial to rapidly disengagement failure circuit reliably.
The utility model whole system needs multiple power supplies, is divided into analog-and digital-two parts.Simulation power supply comprise analog signal conditioner circuit power supply (± 12V, in analog); Numerical portion comprises network controller power supply (5V), FPGA data acquisition module power supply (5V), relay-operated controller power supply (12V).In order to guarantee stability and the reliability of system works, current supply circuit, when guaranteeing normal power supply, must leave certain power supply allowance, and should take certain over-voltage over-current protection and reduce ripple measure, improves power supply quality.
Native system is applied the Automation Technology of Digitized Transformer of up-to-date full station data sharing; by using the up-to-date treatment technology of high-speed high capacity and the technology of high-precise synchronization clock and the optical-fiber longitudinal difference protection module based on high speed optical fiber communication network, the stand leakage protection module of zero-sequence current entirely; solve the problem that Coal Mine Power Distribution System extensively exists high pressure electric leakage and overstep tripping, improve the power supply reliability of Coal Mine Power Distribution System.Multiple functional.Except having complete GPF (General Protection False function, also there is the functions such as measurement, signals collecting, logout, record ripple, communication.Security reliability.Design adopts dual-cpu structure, has greatly improved the reliability of protection; The design of special working power, guarantees that under failure condition protection can action message; Protective device digitlization definite value is adjustable continuously, and protection operation precision is high, avoids mistake action and rejecting action; Automatically preserve sequence of events recording and failure wave-recording curve, be conducive to accident analysis and strengthen power grid security management.
The utlity model has following characteristics:
The whole network high precision clock synchronous with maintain
Between each module of system and time service server distant (more than reaching 10km), in order to guarantee the high-precision clock synchronous of the whole network and to maintain, to reduce the delay in transmitting procedure on the one hand as far as possible, such as adopting the fiber optic Ethernet of 1000M, high speed fibre Ethernet switches etc., are controlled at the wonderful magnitude of sub-micro by transmission delay; Must take certain dynamic adjustment algorithm on the other hand, synchronizing clock signals is compensated and periodic calibration, guarantee the precise synchronization of each module samples time.
2. high accuracy Hot Spare GPS time service is extracted
GPS time service precision has directly determined the synchronization accuracy of whole system, therefore must adopt high-precision GPS time service solution; In order to prevent gps signal to be affected by the external environment, lost efficacy in addition, and when GPS time service is adopted to Hot Spare scheme ，Dang mono-road Signal Fail, be switched to immediately on another road signal and carry out synchronous time service.
3. long distance extended node optical fiber transmission network
For improving synchronous time service precision, data transmission delay must be controlled in certain limit, for the power frequency amount of 50Hz, the synchronous error of 1ms is producible phase error; Guarantee phase error, just necessarily require synchronization accuracy error to be no more than 55uS.In order to reduce time delay, expand communication distance, system adopts optical fiber as transmission medium, and utilizes fiber optic Ethernet switch, realizes easily System Expansion.
4. electrical network waveform multichannel synchronousing collection and extremely fast response
One tunnel time service server can be with multichannel down-hole power transformation subsystem, and power transformation subsystem in multichannel down-hole is all supported multi-channel data acquisition, and must guarantee accurate synchronism of sampling period between each subsystem.When abnormal data being detected, power transformation subsystem in down-hole must be made response real-time, ensures down-hole transformer substation system and personnel's device security.
5. abnormal data real-time remote monitoring
When down-hole transformer substation system occurs after abnormal or fault, the time service of down-hole receive controller can by current abnormal data real-time be transferred to server end.After combined data, server end carries out convergence analysis to abnormal data, and to reach the object of remote monitoring, and server end also can send instructions to down-hole by fiber optic Ethernet, the operational process of control whole system.
Each module in the utility model is commercially available prod, at this, does not repeat.
The above, be only preferred embodiment of the present utility model, is not intended to limit protection range of the present utility model.
Claims (3)
1. the colliery anti-overstep tripping intelligent monitor system based on synchro measure information system, it is characterized in that, its aboveground GPS time service server including for PPS pps pulse per second signal being provided and obtaining system time carries out automatic correcting time to maintain the synchronous data collection controller of accurate internal work clock with a plurality of the obtaining that is positioned at each sub-monitoring station of down-hole after this system time, each synchronous data collection controller carries out interactive communication with this GPS time service server by fiber optic Ethernet respectively, each synchronous data collection controller is communicated by letter with FPGA data acquisition module, this synchronous data collection controller the result that this FPGA data collecting module collected is processed are sent to director server by Ethernet, this director server and host computer interactive communication, this synchronous data collection controller is received the control command of this host computer and is carried out by director server, this director server is connected with the anti-overstep tripping device that carries out data interaction, this FPGA data acquisition module is connected with signal collection modulation plate.
2. the colliery anti-overstep tripping intelligent monitor system based on synchro measure information system as claimed in claim 1, is characterized in that, the bandwidth of described fiber optic Ethernet is 1000M.
3. the colliery anti-overstep tripping intelligent monitor system based on synchro measure information system as claimed in claim 1, it is characterized in that, described anti-overstep tripping device includes two fiber optical transceivers, data processing and transport module, electrical network Multichannel Waveform synchronous acquisition module and the quick Executive Module of switching value, wherein this data processing and transport module include the whole network down-going synchronous and schedule process module and transmitting uplink data module, these two fiber optical transceivers are connected with schedule process module and transmitting uplink data module with the whole network down-going synchronous respectively, this data processing is connected by data/address bus with electrical network Multichannel Waveform synchronous acquisition module with transport module, this electrical network Multichannel Waveform synchronous acquisition module is connected by data/address bus with the quick Executive Module of switching value, the fiber optical transceiver of each anti-overstep tripping device of down-hole connects a gigabit fiber switchboard by multi beam monomode fiber.
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| CN105790440A (en) * | 2016-04-28 | 2016-07-20 | 上海电机学院 | Underground coal mine power supply override trip prevention regulation and control system and recursion network analysis method thereof |
| CN106437854A (en) * | 2016-10-08 | 2017-02-22 | 中国矿业大学 | Distributed coal and rock dynamic disaster sound and electricity synchronous monitoring system and method |
| CN112803379A (en) * | 2021-01-06 | 2021-05-14 | 云南电网有限责任公司楚雄供电局 | Communication interruption function self-healing method for override trip prevention system |
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| CN114935887A (en) * | 2022-07-25 | 2022-08-23 | 星河动力(北京)空间科技有限公司 | Distributed signal acquisition device and carrier rocket |
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- 2013-08-15 CN CN201320496221.3U patent/CN203434750U/en not_active Expired - Fee Related
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| CN105790440A (en) * | 2016-04-28 | 2016-07-20 | 上海电机学院 | Underground coal mine power supply override trip prevention regulation and control system and recursion network analysis method thereof |
| CN105790440B (en) * | 2016-04-28 | 2018-12-11 | 上海电机学院 | Underground coal mine power supply anti-overstep tripping regulator control system and its Recursive Networks analysis method |
| CN106437854A (en) * | 2016-10-08 | 2017-02-22 | 中国矿业大学 | Distributed coal and rock dynamic disaster sound and electricity synchronous monitoring system and method |
| CN106437854B (en) * | 2016-10-08 | 2019-02-22 | 中国矿业大学 | Distributed coal rock dynamic disaster acoustic-electric synchronous monitoring system and method |
| CN114089088A (en) * | 2020-07-15 | 2022-02-25 | 北京天阳睿博科技有限公司 | Whole coal mine grid high-voltage electric leakage monitoring system based on wams and Internet of things technology |
| CN114089088B (en) * | 2020-07-15 | 2024-05-10 | 北京天阳睿博科技有限公司 | Full electric network high voltage electric leakage monitored control system in colliery based on wams and internet of things |
| CN112803379A (en) * | 2021-01-06 | 2021-05-14 | 云南电网有限责任公司楚雄供电局 | Communication interruption function self-healing method for override trip prevention system |
| CN114935887A (en) * | 2022-07-25 | 2022-08-23 | 星河动力(北京)空间科技有限公司 | Distributed signal acquisition device and carrier rocket |
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