CN104865475A - Line loss monitoring device - Google Patents
Line loss monitoring device Download PDFInfo
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- CN104865475A CN104865475A CN201510321647.9A CN201510321647A CN104865475A CN 104865475 A CN104865475 A CN 104865475A CN 201510321647 A CN201510321647 A CN 201510321647A CN 104865475 A CN104865475 A CN 104865475A
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Abstract
The invention provides a line loss monitoring device which comprises a plurality of collecting terminals and a monitoring terminal, wherein each of the collecting terminals comprises a single chip microcomputer which drives an electric quantity collector through a drive circuit and is connected with a wireless transmitting module and a timer; the monitoring terminal comprises a wireless receiving module and a central processing unit; the collecting terminals and the monitoring terminal are in data communication through a wireless network. The line loss monitoring device provided by the invention not only is relatively low in cost and relatively wide in application range, but also can be used for immediately and accurately acquiring the line loss condition and data in a monitoring field so as to accomplish immediate repair and stop problems or behaviors which affect the line loss in an assistant manner. The line loss monitoring device further can be used for accumulating the line loss data in an actual electric power supply process, thereby providing support for normalizing the line loss numerical value.
Description
Technical field
The present invention relates to electricity control technology field, particularly relate to a kind of line loss monitoring device.
Background technology
Line loss refers to the energy loss of distributing with form of thermal energy, is the active power of resistance, conductance consumption.The reason that electric energy produces line loss in transmitting procedure has following several respects:
1, resistance effect: the wire of circuit, transformer, the winding of motor is all the conductor of copper or aluminum.When an electric current passes through it, present a kind of resistance to electric current, this resistance is called the resistance of conductor.Electric energy is in power network transmission, and must overcome the resistance of conductor, thus create electric energy loss, this loss is indicated in conductor temp .-elevating.Because this loss is caused by the resistance of conductor, so be called ohmic loss, its square to be directly proportional to electric current.Transformer, the loss in the windings such as motor, custom is referred to as copper loss again.
2, magnetic fields: transformer needs set up and maintain alternating magnetic field, could boost or step-down.Motor needs set up and maintain rotating magnetic field, could operate and drive manufacturing machine to do work.Electric current sets up the process in magnetic field in the electrical apparatus, namely electromagnetic conversion process.In this course, due to the effect of alternating magnetic field, in the iron core of electrical equipment, create magnetic hysteresis and eddy current, iron core is generated heat, thus creates electric energy loss.Because this loss produces in electromagnetic conversion process, so be referred to as magnetic to encourage loss, it causes iron core to generate heat, and is usually referred to as iron loss again.
3, managerial reason: because management of power supply and power utilization department and the relevant personnel manage strict not, start a leak, cause user's transgression for using electricity and stealing, electric network element leaks electricity, electric power meter error and meter reading personnel are leaked and are copied, the energy loss that mistake to be copied etc. and caused.Because this loss is without certain rule, not easily calculate again, therefore be called not clear loss.Not clear loss produces in power supply enterprise's business process, so be also called business loss.
At present, power supply enterprise, to the statistics of line loss, mostly adopts traditional monthly meter reading method, calculates of that month line loss, but the cycle of this kind of method acquisition line loss is oversize, and accuracy rate is lower, can not prevent by Timeliness coverage when line loss is excessive, and the loss waste of generation is too large.
Summary of the invention
For solving above-mentioned defect of the prior art, the invention provides the line loss monitoring device that a kind of cost is lower, the scope of application is wider, promptly and accurately can know the line loss situation in monitoring field and data, not only can repair and prevent the problem or behavior that affect line loss in time, can also be the line loss data in the actual electric power supply process in accumulation this area, for specification line loss numerical value provides support.
For solving the problems of the technologies described above, the present invention program comprises: a kind of line loss monitoring device, it is characterized in that, comprise some collection terminals and monitoring client, described collection terminal comprises single-chip microcomputer, and described single-chip microcomputer drives electric quantity collector by driving circuit, and described single-chip microcomputer is connected with wireless transmitter module and timer respectively, described monitoring client comprises wireless receiving module and central processing unit, and described collection terminal and monitoring client carry out data communication by wireless network.
Preferably, described single-chip microcomputer is 51 series monolithics.
Preferably, described wireless network adopts the one in following transmission mode: 3G, 4G, CDMA, GSM, GPRS, WLAN.
Further, described monitoring client also comprises digital comparator and alarm, and the input end of described digital comparator connects central processing unit, and the output terminal of described digital comparator connects alarm by driving circuit.
Further, described monitoring client also comprises GPRS module, and the input end of described GPRS module connects numerical value comparator output terminal by driving circuit, and GPRS module can send note when starting to patrolling and examining maintainer.
Further, described monitoring client also comprises display screen, and described display screen is connected with central processing unit, can show status values.
Further, described monitoring client is provided with data server, and described data server is connected with central processing unit, is used for storing line loss data.
The invention has the beneficial effects as follows:
1, the collection terminal of whole apparatus design dispersion and integrated monitoring client, due to the modular design that collection terminal is unified, therefore can produce in batches, reduce production cost, data communication is carried out by wireless network between collection terminal and monitoring client, therefore the laying to communication line and transformation be can avoid, installation cost and maintenance cost decreased.
2, adopt digital comparator and alarm to realize warning function, because digital comparator and alarm are unusual proven technique, therefore cost is very low, even if there is damage, is also easy to replace; Meanwhile, in order to solve monitor staff, to leave guarded region be knowing of warning message, and patrol officer learns in time and the problem that line loss is reported to the police devises GPRS module, guarantees that warning message passes to all people person in time.
3, display screen and data server is devised, the display to line loss data and storage can be realized, line status can be known on the one hand by the display of real-time line loss data, directly basis for estimation is provided fast for whether maintainer solves line loss problem, simultaneously, the a large amount of line loss data stored, can provide data basis for the line design of locality, reach better design effect.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of one embodiment of the present invention;
Fig. 2 is the structural principle schematic diagram of another embodiment of the present invention;
Fig. 3 is the structural principle schematic diagram of the third embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention is described, should be appreciated that exemplifying embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1
A kind of line loss monitoring device as shown in Figure 1, comprise some collection terminals and monitoring client, described collection terminal comprises single-chip microcomputer, described single-chip microcomputer drives electric quantity collector by driving circuit, described single-chip microcomputer is connected with wireless transmitter module and timer respectively, described monitoring client comprises wireless receiving module, central processing unit, digital comparator and alarm, the input end of described digital comparator connects central processing unit, the output terminal of described digital comparator connects alarm by driving circuit, described collection terminal and monitoring client carry out data communication by wireless network.Wherein, described single-chip microcomputer is 51 series monolithics, and described wireless network adopts the one in following transmission mode: 3G, 4G, CDMA, GSM, GPRS, WLAN.
During actual use, each collection terminal is a corresponding ammeter respectively, due to the existence of timer, can be that integral point starts by set timer, set-up mode can be interval as countdown using 1 hour, one-shot is carried out when countdown completes, during countdown, single-chip microcomputer is in dormant state, when countdown completes, single-chip microcomputer is activated, electric quantity collector is driven to realize electric quantity acquisition by driving circuit, then utilize wireless transmitter module that electric quantity data is sent to monitoring client, after monitoring client receives electric quantity data, central processing unit calculates each district (in electric system according to the numbering that electric quantity data front end carries, platform district refers to the service area of a transformer) line loss value, line loss value after calculating enters digital comparator and the numeric ratio pair preset, if the line loss value measured is greater than default value, alarm is then driven to send warning.
For how distinguishing not district on the same stage adopt different numberings to realize.Suppose that some district comprises 5 ammeters, wherein, ammeter 1 is total ammeter, and ammeter 2,3,4,5 is sub-ammeter, now, ammeter 1 be numbered 0010, the numbering of ammeter 2-5 is followed successively by 0011,0012,0013,0014,0015, in above-mentioned numbering, 001 is platform district numbering, be used in other trivial not (other districts can be 002,003 etc.), last position is 0 be indicated as summary table, and the non-zero values such as 1-5 are indicated as sublist.
When sending the electric quantity data collected, except numbering, also comprise the number of degrees and date, therefore, when point in the morning 9 on April 1st, 2015, if ammeter 1 reading is 10 degree, then the data sent should be " 0010_10 degree _ 201504010900 ".
Still for above-mentioned 5 ammeters, the line loss monitoring data between at 9 in the morning at 10 in the morning are described, detailed process is:
The morning 9 point, ammeter 1-5 place arranges collection terminal and starts respectively simultaneously, gather electric quantity data, the information that ammeter 1 sends is " 0010_70 degree _ 201504010900 ", the information that ammeter 2 sends is " 0011_10 degree _ 201504010900 ", the information that ammeter 3 sends is " 0012_15 degree _ 201504010900 ", and the information that ammeter 4 sends is " 0013_20 degree _ 201504010900 ", and the information that ammeter 5 sends is " 0014_9 degree _ 201504010900 ".
The morning 10 point, collection terminal is image data again, the information that ammeter 1 sends is " 0010_90 degree _ 201504011000 ", the information that ammeter 2 sends is " 0011_14 degree _ 201504011000 ", the information that ammeter 3 sends is " 0012_17 degree _ 201504011000 ", the information that ammeter 4 sends is " 0013_22 degree _ 201504011000 ", and the information that ammeter 5 sends is " 0014_15 degree _ 201504011000 ".
Central processing unit has more numbering and identifies that ammeter 1-5 is same district, and ammeter 1 is matrix, and ammeter 2-5 is sublist, and utilize existing computation schema to calculate, line loss calculation formula is:
Line loss=(summary table electricity-sublist electricity summation)/summary table electricity; Wherein, summary table electricity=(number of degrees that 10 number of degrees-9 measured measure) × multiplying power (multiplying power is set to 1 herein); Sublist electricity=(number of degrees that 10 number of degrees-9 measured measure) × multiplying power (multiplying power is set to 1 herein).
Therefore, the summary table electricity calculated=(90-70) × 1=20; Sublist electricity summation=(14-10) × 1+(17-15) × 1+(22-20) × 1+(15-9) × 1=14; Line loss=(20-14)/20=0.3.
If the preset value of digital comparator is 0.18, then detected value 0.3 is obviously greater than 0.18, and digital comparator drives alarm to send warning.
It should be noted that, the multiplying power in computing formula refers to the multiplying power of SOC values in table end information.
Because each hour of monitoring device starts once, and calculate a line loss value, therefore, when in some hour, line loss value is too high, just can send warning in time, this has just narrowed down to one hour between the monitoring section of line loss.Because timer arbitrarily can be arranged between 0-100 hour, therefore can freely control between detection zone, little of to enter minute, large by several days, can adjust targetedly according to actual conditions.
Embodiment 2
When monitor staff departs from post, monitor staff is conveyed in time in order to ensure warning message, and the maintainer gone on patrol outside, further, as shown in Figure 2, described monitoring client also comprises GPRS module, the input end of described GPRS module connects numerical value comparator output terminal by driving circuit, when digital comparator show that current line loss value is greater than the conclusion of preset value, while startup alarm, also GPRS module can be started, several telephone number has been preset in GPRS chip in GPRS module, these telephone numbers are work phone numbers of monitor staff and patrol officer.GPRS module can send note when starting to patrolling and examining maintainer, informs warning message.
Embodiment 3
Because warning message is fuzzyyer, better help cannot be provided for maintainer, in order to know clear line loss numerical value accurately, so that monitor staff better exchanges with patrol officer, for service work provides Data support, further, as shown in Figure 3, described monitoring client also comprises display screen, and described display screen is connected with central processing unit, can show status values.Meanwhile, for the ease of accumulation platform district data, for later stage electrical network upgrading and line design provide Data support, described monitoring client is provided with data server, and described data server is connected with central processing unit, is used for storing line loss data.
Should be understood that; the above-mentioned description for preferred embodiment is comparatively detailed; therefore the restriction to scope of patent protection of the present invention can not be thought; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that the claims in the present invention protect; can also make the various deformation such as replacement, simple combination, these all fall within protection scope of the present invention, and request protection domain of the present invention should be as the criterion with claims.
Claims (7)
1. a line loss monitoring device, it is characterized in that, comprise some collection terminals and monitoring client, described collection terminal comprises single-chip microcomputer, described single-chip microcomputer drives electric quantity collector by driving circuit, described single-chip microcomputer is connected with wireless transmitter module and timer respectively, and described monitoring client comprises wireless receiving module and central processing unit, and described collection terminal and monitoring client carry out data communication by wireless network.
2. a kind of line loss monitoring device according to claim 1, is characterized in that, described single-chip microcomputer is 51 series monolithics.
3. a kind of line loss monitoring device according to claim 1, it is characterized in that, described wireless network adopts the one in following transmission mode: 3G, 4G, CDMA, GSM, GPRS, WLAN.
4. a kind of line loss monitoring device according to claim 1-3 any one, it is characterized in that, described monitoring client also comprises digital comparator and alarm, and the input end of described digital comparator connects central processing unit, and the output terminal of described digital comparator connects alarm by driving circuit.
5. a kind of line loss monitoring device according to claim 4, it is characterized in that, described monitoring client also comprises GPRS module, and the input end of described GPRS module connects numerical value comparator output terminal by driving circuit.
6. a kind of line loss monitoring device according to claim 5, it is characterized in that, described monitoring client also comprises display screen, and described display screen is connected with central processing unit.
7. a kind of line loss monitoring device according to claim 6, it is characterized in that, described monitoring client is provided with data server, and described data server is connected with central processing unit.
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| CN201510321647.9A CN104865475A (en) | 2015-06-12 | 2015-06-12 | Line loss monitoring device |
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| CN201510321647.9A CN104865475A (en) | 2015-06-12 | 2015-06-12 | Line loss monitoring device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105717398A (en) * | 2016-04-12 | 2016-06-29 | 国家电网公司 | Power distribution network power loss monitor and monitoring method thereof |
| CN106908698A (en) * | 2017-04-28 | 2017-06-30 | 刘颖 | A kind of line loss detects automatic acquisition device and its method |
| CN109859472A (en) * | 2019-03-05 | 2019-06-07 | 长安大学 | Vehicle driving roadblock sensory perceptual system, method, vehicle and bus or train route collaboration active safety system and method |
| CN110568298A (en) * | 2019-10-17 | 2019-12-13 | 国家电网有限公司 | Device and method for monitoring loss of direct current line on line |
| CN111060760A (en) * | 2019-12-13 | 2020-04-24 | 西安锐驰电器有限公司 | Line loss detection system and method |
| CN112269103A (en) * | 2020-10-15 | 2021-01-26 | 国网冀北电力有限公司计量中心 | Line loss monitoring platform and method based on intelligent regulation and control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717398A (en) * | 2016-04-12 | 2016-06-29 | 国家电网公司 | Power distribution network power loss monitor and monitoring method thereof |
| CN106908698A (en) * | 2017-04-28 | 2017-06-30 | 刘颖 | A kind of line loss detects automatic acquisition device and its method |
| CN109859472A (en) * | 2019-03-05 | 2019-06-07 | 长安大学 | Vehicle driving roadblock sensory perceptual system, method, vehicle and bus or train route collaboration active safety system and method |
| CN110568298A (en) * | 2019-10-17 | 2019-12-13 | 国家电网有限公司 | Device and method for monitoring loss of direct current line on line |
| CN110568298B (en) * | 2019-10-17 | 2021-12-21 | 国家电网有限公司 | Device and method for monitoring loss of direct current line on line |
| CN111060760A (en) * | 2019-12-13 | 2020-04-24 | 西安锐驰电器有限公司 | Line loss detection system and method |
| CN112269103A (en) * | 2020-10-15 | 2021-01-26 | 国网冀北电力有限公司计量中心 | Line loss monitoring platform and method based on intelligent regulation and control system |
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