CN103335734A - On-line monitoring device for temperature of grounding wires of high-voltage single-core cable sheaths, and control method - Google Patents
On-line monitoring device for temperature of grounding wires of high-voltage single-core cable sheaths, and control method Download PDFInfo
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- CN103335734A CN103335734A CN2013102966214A CN201310296621A CN103335734A CN 103335734 A CN103335734 A CN 103335734A CN 2013102966214 A CN2013102966214 A CN 2013102966214A CN 201310296621 A CN201310296621 A CN 201310296621A CN 103335734 A CN103335734 A CN 103335734A
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Abstract
The invention provides an on-line monitoring device for temperatures of grounding wires of high-voltage single-core cable sheaths, and a control method. The device comprises an A-phase temperature sensor, a B-phase temperature sensor, a C-phase temperature sensor, a temperature data acquisition device, a GPRS (General Packet Radio Service) data transmission module and monitoring equipment, wherein the A-phase temperature sensor, the B-phase temperature sensor and the C-phase temperature sensor are mounted on the grounding wires of the A-phase single-core cable sheath, the B-phase single-core cable sheath and the C-phase single-core cable sheath respectively; three input ends of the temperature data acquisition device are connected with the A-phase temperature sensor, the B-phase temperature sensor and the C-phase temperature sensor respectively; an output end of the temperature data acquisition device is connected with the GPRS data transmission module; the GPRS data transmission module is wirelessly connected with the monitoring equipment; and the monitoring equipment comprises a monitoring computer and a mobile phone terminal which are arranged in a power grid monitoring center. The on-line monitoring device for the temperatures of the grounding wires of the high-voltage single-core cable sheaths, and the control method have the following advantages of safety, reliability, high field applicability, convenience and rapidity.
Description
Technical field
The invention belongs to electric power network detection technique field, particularly relate to a kind of high voltage single-core cable sheath ground wire temperature on-line monitoring device and control method.
Background technology
At present, it is perfect that continuous development is built and transformed to power industry, power supply and electricity consumption enterprise automation, is to improve labour productive forces, increases economic benefit, and operation, the particularly high temperature of power-supply unit are monitored to equipment, reporting to the police is very important.At some special occasions, temperature is too high may to cause accidents such as device damage, burning even blast, and for example: high voltage electric equipment, because the fault test means are limited, temperature over-range point more is difficult for being found in switch box and enclosed busbar especially.Along with the prolongation of temperature rise time, the temperature over-range place strengthens degree of oxidation because of heating, and then may cause and burn bus, contact, contact and ruin major accidents such as dish, power failure.
Current, the high-voltage charged body thermometric mainly adopts Fibre Optical Sensor and infrared spectrum analysis, but all can bring many hidden danger and inconvenience to high-tension apparatus installation and safe operation.Example: increase the optical fiber wiring between the bus gap, infrared-ray is unavoidable in some defective such as accuracy of line sweep.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of high voltage single-core cable sheath ground wire temperature on-line monitoring device and control method.
In order to achieve the above object, high voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention comprises: A phase temperature sensor device, B phase temperature sensor device, C phase temperature sensor device, temperature data acquisition device, GPRS data transmission module and monitoring equipment; Wherein: A phase temperature sensor device, B phase temperature sensor device and C temperature sensor device mutually are installed in respectively on the ground wire of A, B, C three-phase single core cable sheath; The temperature data acquisition device is the temperature sensor data acquisition circuit, and its three input ends are connected with A phase temperature sensor device, B phase temperature sensor device and C phase temperature sensor device respectively, and output terminal is connected with the GPRS data transmission module;
The GPRS data transmission module is the DTU wireless data transmission unit, and it is connected with monitoring equipment by wireless mode;
Monitoring equipment is user's monitoring device, and it comprises monitoring computer and the mobile phone terminal that is arranged on the power system monitor center.
Described temperature data acquisition device mainly is made of microcontroller, data-carrier store and input Acquisition Circuit.
Described temperature data acquisition device is furnished with working power, and the working power model is LXZK-φ 140-100/5.
Described A phase temperature sensor device, B phase temperature sensor device and the C model of temperature sensor device mutually are TYC2000AT, and the model of temperature data acquisition device is TYC2000ZJ, and the model of GPRS data transmission module is GPRS-DTU(WG-1010).
The temperature acquisition control flow of temperature data acquisition device comprises the following step of carrying out in order in the control method of high voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention:
Step 4 is judged single-phase temperature normal S4 stage whether: judge according to ground wire temperature computation value whether corresponding single-phase earthing line temperature is normal, if judged result is "Yes", then enter next step S5 stage, otherwise next step enters the S8 stage;
Step 5, judge three single-phase temperature normal S5 stage whether: judge according to current three-phase ground wire temperature computation value whether the mutual relationship between the three-phase ground wire temperature of three ground wires is normal, if judged result is "Yes", then enter next step S6 stage, otherwise next step enters the S8 stage;
Step 6, judge regularly uplink time then S6 stage whether: judge currently whether arrive the predetermined timing uplink time, if judged result is "Yes", then enter next step S7 stage, otherwise, withdraw from flow process, finish this collection;
Step 7, regularly the S7 stage of uploading data: data are uploaded in timing be written to the transmission data buffer, set sends zone bit, log-on data transmission flow; Withdraw from flow process then, finish this collection;
Step 8, the S8 stage of uploading the Realtime Alerts data: the Realtime Alerts data are written to the transmission data buffer, and set sends zone bit, log-on data transmission flow; This is gathered so far and finishes.
In stage, described data transmission flow is the communication process that microcontroller regularly triggered according to the commitment defini interval time of setting in the temperature data acquisition device at S7, S8, and it comprises the following step of carrying out in order:
The S202 stage that packet is uploaded in step 2, establishment: from send the data buffer, extract and send data, form the complete packet of uploading;
Step 4, judge whether to receive the S204 stage of replying that receives: according to receiving whether set of answer logo, judge currently whether received that the reception that the take over party sends replys; If judged result is "Yes", then next step enters the S208 stage; Otherwise enter next step S205 stage;
Step 5, judgement send the S205 stage whether number of times exceeds standard: according to the count value of transmitting counter, judge the continuous number of times that the sends number of times of overshoot whether, if judged result is "Yes", then next step enters the S209 stage; Otherwise enter next step S206 stage;
The S206 stage of step 6, transmitting counter+1: the count value of transmitting counter done add 1 and handle, enter the S210 stage then;
The S207 stage of step 7, transmitting counter=1: make the count value of transmitting counter equal 1, enter the S210 stage then;
Step 8, clear to send sign, the S208 stage of transmitting counter=0: receive that the take over party sends reception and replys, illustrate that the packet of uploading that last time sent has sent success; The clear to send zone bit makes the count value of transmitting counter equal 0, withdraws from flow process then, finishes this operation;
The S209 stage of step 9, transmission fault handling: set sends fault flag, starts to send troubleshooting process, withdraws from this flow process then;
The S210 stage that packet is uploaded in step 10, transmission: will upload packet and send the GPRS transport module to, and send the data upload order simultaneously, and upload packet by the GPRS transport module to the monitoring equipment transmission of far-end, whole flow process so far finishes.
In the control method of high voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention monitoring equipment receive that the temperature data acquisition device sends upload packet after, will send to receive to the temperature data acquisition device by the GPRS transport module and reply.
Exploitation is used for power equipment temperature detection and early warning to this device based on radio temperature sensor, real-time monitor temperature under the equipment safety operation state can guaranteed, the heat spot that causes accident is carried out early detection and diagnosis, find accidents caused potential cause and take the corresponding management measure, effectively improve power supply continuity and reliability, operation of power networks is had great safe meaning and economic worth.
High voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention and control method have the following advantages:
(1) safe and reliable
Comparison by ground connection temperature monitoring value and calculated value, the diagnosis of the ground system failure that achieves a butt joint, for the operational monitoring of high-tension cable provides theoretical foundation and reference data, to reduce the cable fault risk, improve the safe reliability of operation of urban distribution network, drop to the ruined probability of cable grounding device minimum.
(2) on-the-spot applicability is strong
Be applicable to the ground connection case of different earthing modes, installation site, type, have general applicability, easy to operate, simple installation.
(3) convenient and swift
Cable termination tower earthed system cost is reduced greatly, shorten sense cycle, save human and material resources.
Description of drawings
Fig. 1 is that high voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention is formed synoptic diagram.
The temperature acquisition control flow block diagram that Fig. 2 adopts for high voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention.
The data transmission flow block diagram that Fig. 3 adopts for high voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments high voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention and control method are elaborated.
As shown in Figure 1, high voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention comprises: A phase temperature sensor device TA, B phase temperature sensor device TB, C phase temperature sensor device TC, temperature data acquisition device 1, GPRS data transmission module 2 and monitoring equipment 3; Wherein: A phase temperature sensor device TA, B phase temperature sensor device TB and C temperature sensor device TC mutually are installed in respectively on the ground wire of A, B, C three-phase single core cable sheath; Temperature data acquisition device 1 is the temperature sensor data acquisition controller, and its three input ends are connected with C phase temperature sensor device TC with A phase temperature sensor device TA, B phase temperature sensor device TB respectively, and output terminal is connected with GPRS data transmission module 2;
GPRS data transmission module 2 is the DTU wireless data transmission unit, and it is connected with monitoring equipment 3 by wireless mode;
Described temperature data acquisition device 1 mainly is made of microcontroller, data-carrier store and input Acquisition Circuit, and it has the ability that data acquisition, data storage and data operation are handled.
Described temperature data acquisition device 1 is furnished with working power, and the working power model is LXZK-φ 140-100/5.
Described A phase temperature sensor device TA, B phase temperature sensor device TB and the C model of temperature sensor device TC mutually are TYC2000AT, and the model of temperature data acquisition device 1 is TYC2000ZJ, and the model of GPRS data transmission module 2 is GPRS-DTU(WG-1010).
The working power of described high voltage single-core cable sheath ground connection temperature on-line monitoring device can adopt three kinds of mode: a, storage battery power supply mode; The induction electric energy of b, collection electrical network; C, solar cell for supplying power mode; Wherein comparatively economical and practical with the sun power power supply mode.
As shown in Figure 2, the temperature acquisition control flow of temperature data acquisition device 1 comprises the following step of carrying out in order in the high voltage single-core cable sheath ground wire temperature on-line monitoring device provided by the invention:
Step 4 is judged single-phase temperature normal S4 stage whether: judge according to ground wire temperature computation value whether corresponding single-phase earthing line temperature is normal, if judged result is "Yes", then enter next step S5 stage, otherwise next step enters the S8 stage;
Step 5, judge three single-phase temperature normal S5 stage whether: judge according to current three-phase ground wire temperature computation value whether the mutual relationship between the three-phase ground wire temperature of three ground wires is normal, if judged result is "Yes", then enter next step S6 stage, otherwise next step enters the S8 stage;
Step 6, judge regularly uplink time then S6 stage whether: judge currently whether arrive the predetermined timing uplink time, if judged result is "Yes", then enter next step S7 stage, otherwise, withdraw from flow process, finish this collection;
Step 7, regularly the S7 stage of uploading data: data are uploaded in timing be written to the transmission data buffer, set sends zone bit, log-on data transmission flow; Withdraw from flow process then, finish this collection;
Step 8, the S8 stage of uploading the Realtime Alerts data: the Realtime Alerts data are written to the transmission data buffer, and set sends zone bit, log-on data transmission flow; This is gathered so far and finishes.
In stage, described data transmission flow is the communication process that microcontroller regularly triggered according to the commitment defini interval time of setting in the temperature data acquisition device 1 at S7, S8; As shown in Figure 3, described data transmission flow comprises the following step of carrying out in order:
The S202 stage that packet is uploaded in step 2, establishment: from send the data buffer, extract and send data, form the complete packet of uploading;
Step 4, judge whether to receive the S204 stage of replying that receives: according to receiving whether set of answer logo, judge currently whether received that the reception that the take over party sends replys, namely be directed to the reception of uploading packet that sends before and reply; If judged result is "Yes", then next step enters the S208 stage; Otherwise enter next step S205 stage;
Step 5, judgement send the S205 stage whether number of times exceeds standard: according to the count value of transmitting counter, judge whether the number of times that sends continuously is the number of times of overshoot, if judged result is "Yes", then next step enters the S209 stage; Otherwise enter next step S206 stage;
The S206 stage of step 6, transmitting counter+1: the count value of transmitting counter done add 1 and handle, enter the S210 stage then;
The S207 stage of step 7, transmitting counter=1: make the count value of transmitting counter equal 1, enter the S210 stage then;
Step 8, clear to send sign, the S208 stage of transmitting counter=0: receive that the take over party sends reception and replys, illustrate that the packet of uploading that last time sent has sent success; The clear to send zone bit makes the count value of transmitting counter equal 0, withdraws from flow process then, finishes this operation;
The S209 stage of step 9, transmission fault handling: set sends fault flag, starts to send troubleshooting process, withdraws from this flow process then;
The S210 stage that packet is uploaded in step 10, transmission: will upload packet and send GPRS transport module 2 to, and send the data upload order simultaneously, and by GPRS transport module 2, upload packet to monitoring equipment 3 transmissions of far-end, whole flow process so far finishes.
Described monitoring equipment 3 receive that temperature data acquisition device 1 sends upload packet after, will send to receive to temperature data acquisition device 1 by GPRS transport module 2 and reply.
High voltage single-core cable sheath ground connection temperature on-line monitoring device provided by the invention is when work, temperature data acquisition device 1 is by three temperature sensor continuous acquisition and store three temperature values on the ground wire, and judge whether it is normal, if it is unusual to find that current temperature value occurs, then upload information by GPRS transport module 2 to the monitoring equipment 3 transmission Realtime Alerts of far-end immediately; If temperature value does not occur then continuing the collecting temperature value unusually, after arriving the predetermined timing uplink time, regularly upload information by GPRS transport module 2 to monitoring equipment 3 transmissions of far-end again; Monitoring equipment 3 whenever receive one upload information after, can postback one response message to transmit leg, data acquisition unit 1 send one upload information after, must receive take over party's response message, just calculate and finish transmission this time, otherwise continue to send, until receiving response message; When the number of times of continuous transmission surpassed setting, then there was communication failure in explanation, and temperature data acquisition device 1 will stop to send at this moment, enter troubleshooting process; As mentioned above, the control method of high voltage single-core cable sheath ground connection temperature on-line monitoring device provided by the invention has been introduced the information of uploading and has been received the two-way communication mode of replying, and has improved the reliability of communication, the generation of having avoided uploading the information dropout phenomenon.
High voltage single-core cable sheath ground connection temperature on-line monitoring device provided by the invention, utilize temperature sensor that the temperature of ground wire is gathered in real time, regularly (time interval can be set arbitrarily) arrives monitoring equipment 3 with the data upload that collects wirelessly then.Also have simultaneously the Realtime Alerts pattern, namely when the temperature value that collects surpasses the threshold value of regulation, at once alert data is transferred to monitoring equipment 3.
This device can provide GPRS/CDMA/3G wireless data transmission mode, but both the matching with mobile phone terminal was used, and also can cooperate software platform to use.
Monitoring computer in the monitoring equipment 3 is compared the data that collect by software after receiving the temperature acquisition data with gross data, check the running status of cable.Judge temperature conditions and the fault type of measuring the place cable by the reflection directly perceived of numerical value.
In the use of this Unit Installation, we have chosen 110KV high-tension cable sun Zhang one line, and the cable cover(ing) material is aluminium sheath, and interior external diameter is respectively 107mm, 111mm.And on-the-spot cable data and arranging situation and cable core load have been carried out field survey, comprise cable segment length, each spaced apart etc., and consider that actual engineering cable laying all adopts cable snake shaped arrangement mode, so the actual segment length of cable need doubly take advantage of 1.05 constant.
Can draw by contrast, the result that collection in worksite arrives and on-line monitoring result are roughly close, and in the error allowed band, monitoring device is effectively reliable, and has reduced required manpower and materials significantly.
Claims (8)
1. high voltage single-core cable sheath ground wire temperature on-line monitoring device, it is characterized in that: described high voltage single-core cable sheath ground wire temperature on-line monitoring device comprises: A phase temperature sensor device TA, B phase temperature sensor device TB, C phase temperature sensor device TC, temperature data acquisition device (1), GPRS data transmission module (2) and monitoring equipment (3); Wherein: A phase temperature sensor device TA, B phase temperature sensor device TB and C temperature sensor device TC mutually are installed in respectively on the ground wire of A, B, C three-phase single core cable sheath; Temperature data acquisition device (1) is the temperature sensor data acquisition controller, its three input ends are connected with C phase temperature sensor device TC with A phase temperature sensor device TA, B phase temperature sensor device TB respectively, and output terminal is connected with GPRS data transmission module (2);
GPRS data transmission module (2) is the DTU wireless data transmission unit, and it is connected with monitoring equipment 3 by wireless mode;
Monitoring equipment (3) is user's monitoring device, and it comprises monitoring computer and the mobile phone terminal that is arranged on the power system monitor center.
2. high voltage single-core cable sheath ground wire temperature on-line monitoring device according to claim 1, it is characterized in that: described temperature data acquisition device (1) mainly is made of microcontroller, data-carrier store and input Acquisition Circuit.
3. high voltage single-core cable sheath ground wire temperature on-line monitoring device according to claim 1, it is characterized in that: described temperature data acquisition device (1) is furnished with working power, and the working power model is LXZK-φ 140-100/5.
4. high voltage single-core cable sheath ground wire temperature on-line monitoring device according to claim 1, it is characterized in that: described A phase temperature sensor device TA, B phase temperature sensor device TB and the C model of temperature sensor device TC mutually are TYC2000AT, the model of temperature data acquisition device (1) is TYC2000ZJ, and the model of GPRS data transmission module (2) is GPRS-DTU(WG-1010).
5. high voltage single-core cable sheath ground wire temperature on-line monitoring device according to claim 1, it is characterized in that: the working power of described high voltage single-core cable sheath ground connection temperature on-line monitoring device adopts one of following three kinds of modes: a, storage battery power supply mode; The induction electric energy of b, collection electrical network; C, solar cell for supplying power mode; Wherein comparatively economical and practical with the sun power power supply mode.
6. the control method of a high voltage single-core cable sheath ground wire temperature on-line monitoring device as claimed in claim 1 is characterized in that: the temperature acquisition control flow of described temperature data acquisition device (1) comprises the following step of carrying out in order:
Step 1, the S1 stage of collecting temperature value: respectively by being installed in three temperature sensor TA, TB on the three-phase ground wire, the temperature value that TC gathers three ground wires;
Step 2, the S2 stage of setting up the temperature value sequence: the temperature value of three ground wires of phase-splitting storage in temperature data acquisition device (1), the time series of composition three-phase ground wire temperature value;
Step 3, the S3 stage of digital filtering: at the temperature value sequence that the S2 stage produces, carry out digital filtering, obtain the calculated value of current each phase ground wire temperature;
Step 4 is judged single-phase temperature normal S4 stage whether: judge according to ground wire temperature computation value whether corresponding single-phase earthing line temperature is normal, if judged result is "Yes", then enter next step S5 stage, otherwise next step enters the S8 stage;
Step 5, judge three single-phase temperature normal S5 stage whether: judge according to current three-phase ground wire temperature computation value whether the mutual relationship between the three-phase ground wire temperature of three ground wires is normal, if judged result is "Yes", then enter next step S6 stage, otherwise next step enters the S8 stage;
Step 6, judge regularly uplink time then S6 stage whether: judge currently whether arrive the predetermined timing uplink time, if judged result is "Yes", then enter next step S7 stage, otherwise, withdraw from flow process, finish this collection;
Step 7, regularly the S7 stage of uploading data: data are uploaded in timing be written to the transmission data buffer, set sends zone bit, log-on data transmission flow; Withdraw from flow process then, finish this collection;
Step 8, the S8 stage of uploading the Realtime Alerts data: the Realtime Alerts data are written to the transmission data buffer, and set sends zone bit, log-on data transmission flow; This is gathered so far and finishes.
7. control method according to claim 6, it is characterized in that: at S7, S8 in the stage, described data transmission flow is the communication process that microcontroller regularly triggered according to the commitment defini interval time of setting in the temperature data acquisition device (1), and it comprises the following step of carrying out in order:
Step 1, judgement send the S201 stage of flag set: judge that whether send sign is set, if judged result is "Yes", then enters next step S202 stage; Otherwise withdraw from flow process, finish this operation;
The S202 stage that packet is uploaded in step 2, establishment: from send the data buffer, extract and send data, form the complete packet of uploading;
Step 3, judge whether the S203 stage for sending first: whether the count value according to transmitting counter is zero, judges that whether this sends for sending first, if judged result is "Yes", then next step enters the S207 stage; Otherwise enter next step S204 stage;
Step 4, judge whether to receive the S204 stage of replying that receives: according to receiving whether set of answer logo, judge currently whether received that the reception that the take over party sends replys; If judged result is "Yes", then next step enters the S208 stage; Otherwise enter next step S205 stage;
Step 5, judgement send the S205 stage whether number of times exceeds standard: according to the count value of transmitting counter, judge the continuous number of times that the sends number of times of overshoot whether, if judged result is "Yes", then next step enters the S209 stage; Otherwise enter next step S206 stage;
The S206 stage of step 6, transmitting counter+1: the count value of transmitting counter done add 1 and handle, enter the S210 stage then;
The S207 stage of step 7, transmitting counter=1: make the count value of transmitting counter equal 1, enter the S210 stage then;
Step 8, clear to send sign, the S208 stage of transmitting counter=0: receive that the take over party sends reception and replys, illustrate that the packet of uploading that last time sent has sent success; The clear to send zone bit makes the count value of transmitting counter equal 0, withdraws from flow process then, finishes this operation;
The S209 stage of step 9, transmission fault handling: set sends fault flag, starts to send troubleshooting process, withdraws from this flow process then;
The S210 stage that packet is uploaded in step 10, transmission: will upload packet and send GPRS transport module (2) to, and send the data upload order simultaneously, upload packet by GPRS transport module (2) to monitoring equipment (3) transmission of far-end, whole flow process so far finishes.
8. the control method of a high voltage single-core cable sheath ground wire temperature on-line monitoring device as claimed in claim 1, it is characterized in that, described monitoring equipment (3) receive that temperature data acquisition device (1) sends upload packet after, will send to receive to temperature data acquisition device (1) by GPRS transport module (2) and reply.
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| CN2013102966214A CN103335734A (en) | 2013-07-16 | 2013-07-16 | On-line monitoring device for temperature of grounding wires of high-voltage single-core cable sheaths, and control method |
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Application publication date: 20131002 |