CN202633922U - Device for preventing override trip of coal mine power network - Google Patents
Device for preventing override trip of coal mine power network Download PDFInfo
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- CN202633922U CN202633922U CN 201220125434 CN201220125434U CN202633922U CN 202633922 U CN202633922 U CN 202633922U CN 201220125434 CN201220125434 CN 201220125434 CN 201220125434 U CN201220125434 U CN 201220125434U CN 202633922 U CN202633922 U CN 202633922U
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Abstract
The utility model discloses a device for preventing override trip of a coal mine power network. The device comprises a GPS synchronization and timing device installed above a coal mine, a master server, a protection and control device installed on ground and an anti-overriding adjusting device installed in each substation underground. The GPS synchronization and timing device, the master server, the protection and control device, and the anti-overriding adjusting devices are all connected with a switchboard through which performs data information interaction. The anti-overriding adjusting devices collect synchronously fault messages under control of the GPS synchronization and timing device, and send the fault messages to the protection and control device on the ground through an optical network and the switchboard. The device using the high-precision GPS synchronization and timing device installed above the coal mine realizes data synchronization and data information sharing among the anti-overriding adjusting device installed in each substation underground. The device can accurately and reliably determine a fault position, and reliably cut off a fault circuit in time without influencing normal power supply of other circuits.
Description
Technical field
The relevant a kind of anti-overstep tripping device of the utility model is meant especially and a kind ofly can improves the power supply reliability of colliery electrical network and the colliery electrical network anti-overstep tripping device of fail safe.
Background technology
Present colliery high-voltage fence is because of receiving the restriction of various factorss such as economy, technology, mostly by the multistage stub cable (trunk line type of the control step by step portrait network of 100m～1200m) form.General big-and-middle-sized coal mining enterprise, the colliery electric power system, 3-4 level protection (going into the well circuit to the main transformer backup protection from working face, down-hole central substation, working section sub station) need be installed to final load by electric substation from ground.Because supply line is shorter, it is many to extend progression, and the short circuit current size of different stage if adopt traditional current protection, can't be taken into account the selectivity and the rapidity requirement of protection much at one simultaneously.Generally circuit begins from the down-hole; Current protection is all adjusted and is zero propagation; Because current ration is difficult to strict the differentiation, causes the fault of down-hole power system ubiquity " overstep tripping ", can't guarantee the normal operation of mine power supply system and the program complicacy that restores electricity; Have a strong impact on the safety in production of mine, even can cause whole mine in paralyzed state.Traditional high pressure integrated protection has not satisfied the needs that reality is produced, and often causes the misoperation of switch or even tripping to do, and causes the large-area power-cuts of colliery electric power system, the life security that have a strong impact on production, threatens mine and master worker.
Because the colliery major part of China is a highly gassy mine; Factor affecting such as the colliery electric power system is complicated and huge, the substation automation degree is low; Longer because of stalling for time in recovering transmission process; Main load such as main fan, booster can not recover to run well in the shortest time, for gas exceeding limit has been buried hidden danger; More than various unfavorable factor direct threats the power supply safety and the mine safety of mine.Therefore, must be through technical research, employing new technology solves the overstep tripping problem that exists in the electric power system of colliery, to improve the security reliability of electric power system, guarantees mine production and life safety.
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 requires increasingly high to colliery underground power supply system reliability, fail safe and successional.Because work under bad environment under the coal mine, load fluctuation is big, and 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 simultaneously owing to operating personnel, electric leakage and single phase ground fault occur through regular meeting; If untimely eliminating; Line insulation will bear line voltage, and long-time running will cause insulation breakdown, develop into three-phase or line to line fault accident.Single-phase earthing, the arc energy that produces when phase fault takes place can cause gas, coal-dust explosion, directly jeopardize personal safety and mine production.The flame-proof mine high and low voltage switch is the main protection of high-low pressure electric power system terminated line under the 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, because the closure of data causes the formation of " information island ", the difficulty of overstep tripping can't overcome always.
Though the phenomenon of overstep tripping can not be to take place often, so long as overstep tripping has taken place, gently then cause the upper level tripping operation, cause the power failure enlarged areas, heavy then can cause whole colliery in paralyzed state.Analyze the reason of the phenomenon that overstep tripping takes place; The one, because the special working condition in colliery causes, cable is short out, the parameter setting the superior and the subordinate basically identical when breaking down; Like this when breaking down; Can not effectively distinguish the abort situation place, accident is further extended, and causes the upper level high-voltage trip; The 2nd, because current protection is all adjusted and is zero propagation.These problems are not simply to change with being provided with to delay time through revising parameter, must prevent the generation of these accidents through the complete anti-overstep tripping of a cover is arranged.
The utility model content
In view of this, the main purpose of the utility model is to provide a kind of circuit of disengagement failure selectively to avoid the colliery electrical network anti-overstep tripping device of All other routes normal power supply.
For achieving the above object; The utility model provides a kind of colliery electrical network anti-overstep tripping device; It includes and is installed in aboveground GPS synchronously and correction device, director server, surface-based protection measure and control device and the anti-adjusting device of bypassing the immediate leadership that is installed in each electric substation of down-hole; This GPS synchronously all is connected to switch with correction device, director server, protection measure and control device and each adjusting device of preventing bypassing the immediate leadership; It is mutual to carry out data message through switch, this is anti-bypass the immediate leadership adjusting device this GPS synchronously with correction device control down the synchronous acquisition fault message also this fault message is reached ground protection measure and control device through fiber optic network and this switch.
Said switch is the kilomega optic fiber switch.
Said GPS synchronously and correction device be GPS time service server; It includes the time service main control module that is used to resolve the GPS parsing module of aerial gps signal and is used to produce system time; Be connected through communication bus between this GPS parsing module and the time service main control module; This GPS time service server is connected with mushroom line on the previous day, and this GPS time service server connects the kilomega optic fiber transceiver through the gigabit Ethernet line, and this kilomega optic fiber transceiver connects said kilomega optic fiber switch through monomode fiber.
Said director server includes real-time communication server and historic data server, and this real-time communication server connects outer net through router, and this real-time communication server is connected said kilomega optic fiber switch with historic data server and through the gigabit Ethernet line.
The said anti-adjusting device of bypassing the immediate leadership includes two fiber optical transceivers, data processing and transport modules, 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 through data/address bus with electrical network Multichannel Waveform synchronous acquisition module with transport module, and this electrical network Multichannel Waveform synchronous acquisition module is connected through data/address bus with the quick Executive Module of switching value; Said kilomega optic fiber switch is connected with the fiber optical transceiver of each anti-adjusting device of bypassing the immediate leadership of down-hole respectively through the multi beam monomode fiber.
The utility model is based on the synchronously sampled data on the basis of light network; Utilization is installed in the synchronous and correction device of aboveground high-precision GPS; Realization is installed in the synchronization of data and the data information sharing of the anti-adjusting device of bypassing the immediate leadership in each electric substation of down-hole; Can be accurately failure judgement position reliably, timely excision fault branch does not reliably influence the normal power supply of All other routes; Really accomplish selectivity, reliability, sensitivity in one, effectively solved the overstep tripping phenomenon of puzzlement colliery power supply safety.
Description of drawings
Fig. 1 is vertical difference short-circuit protection basic principle figure;
Fig. 2 is the theory diagram of the utility model colliery electrical network anti-overstep tripping device;
Fig. 3 is the enforcement state diagram of the utility model colliery electrical network anti-overstep tripping device.
Embodiment
For ease of structure of the utility model and the effect that reaches are had further understanding, combine accompanying drawing to develop simultaneously the preferred embodiment detailed description as follows at present.
The colliery electrical network anti-overstep tripping device of the utility model is to adopt the vertical principle that joins current differential protection of fiber optic network to realize anti-overstep tripping.Vertical couplet current differential protection principle is to be based upon on the basis of Kirchhoff's current law (KCL), has good selectivity, can excise the fault in the protection zone sensitive, apace.This device utilizes optical fiber communication that some flow and the phase information of each end of the transmission line mode through fiber optic network is vertically linked up; And be sent to the other side and compare; In order to judgement is this transmission line internal fault or external fault, thereby determines whether to move this circuit of excision.Principle is as shown in Figure 1, in the native system, adopts longitudinal difference protection to realize the selectivity short-circuit protection.When 1 failed because, 1 short circuit current can flow through i.e. 2 points of main line, so the overstep tripping phenomenon can take place, when the time-delay of adopting 0.1s, it is normal that 1 point failure is got rid of the back system restoration, and 2 can not be tripped; But when promptly 3 when breaking down of buses; 2 point breakers should not have delay tripping; But 0.1s also delays time; It is a hidden danger; So we adopt the current vector difference to distinguish and short trouble, i.e.
at 1 at 3.
=0 when 1 point failure,
≠ 0 and
≈
when 3 point failures.Pilot wire relays is realized on principle basically like this, thereby makes this short-circuit protection have selectivity.
Like Fig. 2 and shown in Figure 3, the colliery electrical network anti-overstep tripping device of the utility model includes and is installed in aboveground GPS synchronously and correction device, director server, surface-based protection measure and control device and the anti-adjusting device of bypassing the immediate leadership that is installed in each electric substation of down-hole.This GPS synchronously all is connected to switch with correction device, director server, protection measure and control device and each adjusting device of preventing bypassing the immediate leadership, and it is mutual to carry out data message through switch.This director server includes real-time communication server and historic data server, and this real-time communication server connects outer net through router, and real-time communication server is with historic data server and be connected switch through the gigabit Ethernet line.This switch is connected with each anti-adjusting device of bypassing the immediate leadership of down-hole respectively through the multi beam monomode fiber.For just carrying out fast data exchange, adopt the kilomega optic fiber switch in the utility model.This GPS synchronously and correction device be GPS time service server, it mainly includes GPS parsing module and time service main control module, is connected through communication bus between this GPS parsing module and the time service main control module; This GPS time service server is connected with GPS time service dedicated chamber outside antenna, and like mushroom line on the previous day, this GPS time service server is through the special-purpose time service mushroom line on the previous day of high-gain; Utilize the GPS parsing module that aerial gps signal is resolved; And the signal that will resolve is transferred to the time service main control module, this time service main control module output high-precision PPS (pulses per second, pulse/sec) pps pulse per second signal; Through serial ports standard UTC is provided (Universal Time Coordinated simultaneously; General universal time coordinated) temporal information is as high-precision GPS time synchronization basic standard, i.e. system time.This GPS time service server connects the kilomega optic fiber transceiver through the gigabit Ethernet line, and this kilomega optic fiber transceiver connects the kilomega optic fiber switch through monomode fiber.
The anti-adjusting device of bypassing the immediate leadership in the utility model includes two fiber optical transceivers, data processing and transport modules, 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 through data/address bus with electrical network Multichannel Waveform synchronous acquisition module with transport module, and this electrical network Multichannel Waveform synchronous acquisition module is connected through data/address bus with the quick Executive Module of switching value.
Realize the anti-overstep tripping technology of high-voltage fence, must realize that whole network data samples at synchronization point accurately, the data that obtain like this are meaningful to electrical energy consumption analysis.Aboveground many standards of GPS/Galileo time service server of the 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) that provides through GPS time service main control module; Obtain an accurate system time; And will this moment send to each sub-monitoring station of down-hole through Ethernet, after the synchronous data collection controller of each sub-monitoring station obtains this moment, carry out the automatic delay calibration through agreement; Cycle during the school after, can keep an accurate internal work clock that the whole network is synchronous.The electrical network Multichannel Waveform synchronous acquisition module of each anti-adjusting device of bypassing the immediate leadership can synchronization be gathered the waveform of a plurality of circuits; And utilize FPGA (Field-Programmable Gate Array; Field programmable gate array) quick identification of realization unusual waveforms; Electrical network Multichannel Waveform synchronous acquisition module is transferred to data processing and transport module with the signal of unusual waveforms through data/address bus, and through fiber optic network and kilomega optic fiber switch the real time data of each tracking telemetry and command station and the state of fault is uploaded to ground protection measure and control device, and this protection measure and control device is a monitor supervision platform; But this monitor supervision platform is the aboveground expanding monitoring platform of a cover based on the database server and the communication server; This platform can conveniently insert internet, is convenient to telemanagement and monitoring, to fully understand the running status of whole high-voltage fence; In addition, pass through this platform simultaneously, be very easy to maintenance particular scene to the setting composite door limit value of each monitoring station through fiber optic network.
The utility model is used the digital transformer substation technology of up-to-date full station data sharing; The up-to-date treatment technology through using high-speed high capacity and the technology of high-precise synchronization clock and based on the optical-fiber longitudinal difference protection of Networks of Fiber Communications, the stand earth leakage protective of zero-sequence current entirely; Solve the problem that the colliery electric power system extensively exists high pressure electric leakage and overstep tripping, improve the power supply reliability of colliery electric power system.Multiple functional.System is based on the electric substation automation system of new generation of IEC61850 framework, and the intelligent electric equipment room information in the transformer station of realizing is enjoyed the modernized transformer station with interoperability mutually.Except that having complete GPF (General Protection False function, also have functions such as measurement, signals collecting, logout, record ripple, communication, safe and reliable.Dual-cpu structure is adopted in the native system design, has improved the reliability of protection greatly; Special working power design guarantees protection action message under failure condition; Protective device digitlization definite value is adjustable continuously, and the protection operation precision is high, avoids malfunction and tripping; Automatically preserve sequence of events recording and failure wave-recording curve, help accident analysis and strengthen the power grid security management.
The utility model is on the basis that does not change existing electric power system and structure, takes the cluster sampling data, focuses on judgment mode, and is easy for installation, easy-to-connect, and safeguard simple.The liquid-crystal display section of monitoring workbench adopts 10.4 inches high definition liquid crystal, and video data information is in real time revised and that parameter is set is simple and convenient.Sampling for data is voltage sequence filter, current transformer sampled voltage signal and the current signal that utilizes in the high voltage flame proof switch, utilizes the zero sequence current mutual inductor sampling zero-sequence current that is installed in the high voltage flame proof switch.
The utility model is based on the synchronously sampled data on the basis of light network; With layering collection, central controlled structure system, the information gathering of analog quantity, switching value and calculating, the logic determines layering of information are realized, utilize to be installed in the synchronous and correction device of aboveground high-precision GPS; Realization is installed in the synchronization of data and the data information sharing of the anti-adjusting device of bypassing the immediate leadership in each electric substation of down-hole; Can be accurately failure judgement position reliably, timely excision fault branch does not reliably influence the normal power supply of All other routes; Really accomplish selectivity, reliability, sensitivity in one, effectively solved the overstep tripping phenomenon of puzzlement colliery power supply safety.Modification for protection definite value parameter needs only on the protection measure and control device on ground in addition, and traditional Microcomputer Protection generally must be down to downhole operations.
Native system has been owing to adopted the very fast concentrated protection device of arithmetic speed, and uses special-purpose high-speed light fibre web to reduce the communication time-delay greatly, guaranteed selectivity, reliability and the quick-action property of protection.Native system has improved the security reliability of colliery network system greatly, and optical fiber is cheap, and is in light weight, and customer investment has been practiced thrift in easy construction.
Each module in the utility model is the commercially available prod, does not do detailed description at this.
The above is merely the preferred embodiment of the utility model, is not the protection range that is used to limit the utility model.
Claims (5)
1. colliery electrical network anti-overstep tripping device; It is characterized in that; It includes and is installed in aboveground GPS synchronously and correction device, director server, surface-based protection measure and control device and the anti-adjusting device of bypassing the immediate leadership that is installed in each electric substation of down-hole; This GPS synchronously all is connected to switch with correction device, director server, protection measure and control device and each adjusting device of preventing bypassing the immediate leadership; It is mutual to carry out data message through switch, this is anti-bypass the immediate leadership adjusting device this GPS synchronously with correction device control down the synchronous acquisition fault message also this fault message is reached ground protection measure and control device through fiber optic network and this switch.
2. colliery as claimed in claim 1 electrical network anti-overstep tripping device is characterized in that said switch is the kilomega optic fiber switch.
3. colliery as claimed in claim 2 electrical network anti-overstep tripping device; It is characterized in that; Said GPS synchronously and correction device be GPS time service server; It includes the time service main control module that is used to resolve the GPS parsing module of aerial gps signal and is used to produce system time, is connected through communication bus between this GPS parsing module and the time service main control module, and this GPS time service server is connected with mushroom line on the previous day; This GPS time service server connects the kilomega optic fiber transceiver through the gigabit Ethernet line, and this kilomega optic fiber transceiver connects said kilomega optic fiber switch through monomode fiber.
4. colliery as claimed in claim 2 electrical network anti-overstep tripping device; It is characterized in that; Said director server includes real-time communication server and historic data server; This real-time communication server connects outer net through router, and this real-time communication server is connected said kilomega optic fiber switch with historic data server and through the gigabit Ethernet line.
5. colliery as claimed in claim 2 electrical network anti-overstep tripping device; It is characterized in that; The said anti-adjusting device of bypassing the immediate leadership includes two fiber optical transceivers, data processing and transport modules, 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 through data/address bus with electrical network Multichannel Waveform synchronous acquisition module with transport module, and this electrical network Multichannel Waveform synchronous acquisition module is connected through data/address bus with the quick Executive Module of switching value; Said kilomega optic fiber switch is connected with the fiber optical transceiver of each anti-adjusting device of bypassing the immediate leadership of down-hole respectively through the multi beam monomode fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220125434 CN202633922U (en) | 2012-03-29 | 2012-03-29 | Device for preventing override trip of coal mine power network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220125434 CN202633922U (en) | 2012-03-29 | 2012-03-29 | Device for preventing override trip of coal mine power network |
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| CN202633922U true CN202633922U (en) | 2012-12-26 |
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| CN 201220125434 Expired - Fee Related CN202633922U (en) | 2012-03-29 | 2012-03-29 | Device for preventing override trip of coal mine power network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094987A (en) * | 2013-02-28 | 2013-05-08 | 中国矿业大学 | Identification and isolation method of through faults of coal mine power supply system |
| 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 |
-
2012
- 2012-03-29 CN CN 201220125434 patent/CN202633922U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094987A (en) * | 2013-02-28 | 2013-05-08 | 中国矿业大学 | Identification and isolation method of through faults of coal mine power supply system |
| CN103094987B (en) * | 2013-02-28 | 2015-01-21 | 中国矿业大学 | Identification and isolation method of through faults of coal mine power supply system |
| 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 |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING MINE ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHANG ZUOLONG Effective date: 20130517 Free format text: FORMER OWNER: WANG JINHONG WANG NIANBIN ZHANG BO HUO PENGZHU YAN LIJING Effective date: 20130517 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 045000 YANGQUAN, SHAANXI PROVINCE TO: 100085 HAIDIAN, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130517 Address after: 100085 Beijing city Haidian District xi'erqi Street No. 12 Keyuan Ming building room 402 Patentee after: Beijing Kuangneng Technology Co., Ltd. Address before: 045000, Yangquan District, Shanxi Province, Yucai Road Dongshan District 4, Shanxi Yangquan Wanke Electrical Appliance Co., Ltd. Patentee before: Zhang Zuolong Patentee before: Wang Jinhong Patentee before: Wang Nianbin Patentee before: Zhang Bo Patentee before: Huo Pengzhu Patentee before: Yan Lijing |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130329 |