CN201314935Y - Automatic balancing on-line line loss monitor - Google Patents
Automatic balancing on-line line loss monitor Download PDFInfo
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- CN201314935Y CN201314935Y CNU2008201781751U CN200820178175U CN201314935Y CN 201314935 Y CN201314935 Y CN 201314935Y CN U2008201781751 U CNU2008201781751 U CN U2008201781751U CN 200820178175 U CN200820178175 U CN 200820178175U CN 201314935 Y CN201314935 Y CN 201314935Y
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- line loss
- line
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- line monitoring
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Abstract
The utility model provides an automatic balancing on-line line loss monitor which is used as a basic control unit of an entire power supply line. An automatic balancing on-line line loss monitor is installed at the general line outlet as the main station, another automatic balancing on-line line loss monitor is installed at each user as the line loss monitoring substation, the substations transmit data to the main station periodically by GSM method, and the main station makes line loss analysis and calculation. By utilizing the monitor, the power utilization management personnel can accurately acquire the line loss data in each time period in time, and can receive line loss cause alarm while electric larceny is performed, thereby providing reliable basis for handling line loss.
Description
Technical field
The utility model relates to a kind of grid operating monitoring device, particularly relates to a kind of line loss on-line monitoring instrument.
Background technology
At present, except checking meter and negative keyholed back plate reason can be carried out the limited monitoring operation of power networks, also do not have to diagnose and provide at grid line loss specially the technological means of resolution, we can say that this application that appears at of automatic balance type line loss on-line monitoring scheme has been filled up blank.
The statistics of line loss is based on complicate statistics at present, and efficient is low, can not guarantee the synchronism of each some statistics, and therefore the line loss accuracy that calculates is had a greatly reduced quality.
Current electric energy metered system generally is made up of metering mutual inductor and electric energy meter two parts; electric energy meter is gathered electric power signal and is calculated power consumption from the metering mutual inductor; the foundation that this power consumption is just paid the fees to electricity consumer as power supply department; because metering system lacks the self-protection measure; just the breach that has become electricity filching behavior to attack; means constantly update; draw random connecing from more original private; there is not the table electricity consumption; around the table electricity consumption; change the mutual inductor nameplate; means such as private opening ammeter metering lead sealing develop into the intelligent stealing of present high-tech; gimmick is more and more intelligent hidden, and is increasing to the loss that power supply department causes.This situation why occurring, is because lack the systems approach of monitoring line loss, is difficult to deal with the electricity filching means that constantly updates, and is in extremely passive status.Therefore want system to solve the problem of line loss monitoring.
The utility model content
The purpose of this utility model provides a kind of automatic balance type line loss on-line monitoring instrument, it can make management of power use personnel understand the line loss data of each period timely and accurately, can when behaviors such as stealing take place, receive the reason alarm that line loss produces, provide reliable foundation for administering line loss.
Described automatic balance type line loss on-line monitoring instrument is the basic control unit of 10KV supply line line loss on-line monitoring system, one cover is installed in the electric energy metering box of each electricity consumer is constituted monitoring sub-station, at circuit general export place one cover is installed and is constituted master station, each substation with the information that collects by wireless communication module and master station Data transmission regularly, CPU control module by master station adopts the automatic balance type principle that this circuit is carried out line loss analyzing calculating, and the real-time analysis result reported managerial personnel by the wireless module mode, can there be the main website operation.
As shown in Figure 1, described automatic balance type line loss on-line monitoring instrument comprises: little power consumption CPU, serial communication interface, power circuit, expansion interface, wide-range voltage input harmonics Acquisition Circuit, wireless communication module, SIM card interface, antennal interface.
When the harmonic content that collects when described harmonic wave Acquisition Circuit was unusual, program will send a warning message to the keeper automatically.
Described power circuit is responsible for powering to keep equipment operation to wireless communication module, expansion interface, serial communication interface, CPU.
Described wireless communication module mainly is responsible for the radio communication between master station and the substation.
Described little power consumption CPU is responsible for the information that collects by serial communication interface and harmonic wave is analyzed, calculated.
Described expansion interface is a bus interface, can draw one or more interfaces as required.
The beneficial effects of the utility model:
The utility model can make management of power use personnel understand the line loss data of each period timely and accurately, can receive the reason alarm that line loss produces when behaviors such as stealing take place, provides reliable basis for administering line loss.
Description of drawings
Fig. 1 is an automatic balance type line loss on-line monitoring instrument theory diagram;
Fig. 2 be automatic balance type line loss on-line monitoring instrument monopolize the electric energy meter communication interface time the mode of connection;
Fig. 3 is the mode of connection of sharing the electric energy meter communication interface with miscellaneous equipment of automatic balance type line loss on-line monitoring instrument; For the electric energy meter of high pressure measurement 3 * 100V, the N utmost point of this device working power meets the B of electric energy meter voltage terminal;
Fig. 4 is an automatic balance type line loss on-line monitoring instrument Wiring port, and 1 is power interface, and 2 is that expansion interface, 3 is the RS485 communication interface, and 4 is the SIM interface, and 5 is antennal interface;
Fig. 5 is the harmonic wave Acquisition Circuit of automatic balance type line loss on-line monitoring instrument;
Fig. 6 is the power circuit of automatic balance type line loss on-line monitoring instrument.
Embodiment
The utility model is the basic control unit of 10KV supply line line loss on-line monitoring system, and system constitutes two closed loops:
1, is that monitored object carries out the terminal networking with the whole piece circuit, forms a big closed loop, establish one's own system, can not have the main website operation.The master station of an equipment as total system promptly is installed at transformer station whole line outlet place, at other each nodes of circuit an equipment is installed respectively and constituted a complete system as substation master station and substation.
2, be that monitored object is formed a little closed loop with some emphasis users, promptly one cover high-voltage radio mutual inductor is installed at the subscriber's drop end, at the terminal hookup wire loss on-line monitoring of electricity consumption instrument, monitor the ammeter operation conditions in real time, collecting has abnormal data then to send warning message automatically to the keeper in the ammeter, and analyze the reason that produces line loss, provide corresponding control measures.Realization is to the complete monitoring of electricity consumption.
The information timed sending that gather each substation is analysed and compared by master station to master station, calculates line loss per unit.
Wireless communication module and SIM card are united use, mainly are responsible for the radio communication between master station and the substation, also can send order to the substation in the mode of short message, obtain corresponding information.
Short message command format commonly used is as shown in table 1.
Table 1 is used the short message command format always
| Sequence number | Short message format | Function | The |
|
| 1 | The YYMM line loss per unit | Read YY MM month line loss per | Master station | |
| 2 | The YYMMDD line loss per unit | Read YY MM month DD day line loss per | Master station | |
| 3 | Real time data | Read three-phase current voltage, power factor | Always/ |
|
| 4 | Check meter | Read current meritorious total idle total, maximum demand is meritorious total idle total | Always/ |
|
| 5 | Current | Read current forward and reverse meritorious total, point, peak, put down, paddy | Always/ |
|
| 6 | Last month | Read forward and reverse meritorious total, point, peak of last month, put down, paddy | Always/ |
|
| 7 | Requirement | It is meritorious total idle total to read current last month Direct/Reverse maximum demand | Always/ |
|
| 8 | Idle | It is idle total to read current, last month, the month before last Direct/Reverse | Always/ |
|
| 9 | Harmonic voltage | Read voltage and harmonic value | Always/ |
|
| 10 | The decompression record | Read nearest phase failure zero-time concluding time, accumulative total phase failure time, number of times | Always/substation |
The equipment work power supply is divided into two-way after inserting, and one the road inserts the harmonic wave Acquisition Circuit, and power circuit is inserted on another road.
Harmonic wave Acquisition Circuit shown in Figure 5 is carried out analytical calculation by amplifier after through two electrical resistance collections.Amplifier links to each other with CPU, sends resulting data in real time to CPU.If the harmonic content that collects is greater than predetermined value, program will send a warning message automatically to the keeper, and information is: " harmonic wave severe overweight influence metering ".
Power circuit shown in Figure 6, working power enters power circuit after inserting, earlier through wave filter, arrive rectifier bridge then, rectifier bridge will insert voltage and become direct current by interchange, enter transformer again, transformer is exported three groups of voltage: DC24V, DC12V, DC5V, and 24V exports 4.2V later on through step-down chip LM2596 and uses for wireless communication module; 12V goes out two groups, and the expansion interface of a group of access equipment is powered to expansion module, becomes 5V behind another group process three-terminal voltage-stabilizing pipe 7805 and uses for 485 chips of equipment and 485 communication interfaces; VCC powers to CPU through becoming 3.3V behind the stabilivolt 1117.
Little power consumption CPU has adopted the MSP430 chip, has inserted each substation power consumption data is carried out the algorithm that balanced type is calculated and the every day different periods of branch regularly store and regularly upload.CPU to signal collected automatically generate after carrying out analytical calculation daily power consumption, line loss, current and last month meritorious, idle, requirement, point, honeybee, put down, paddy, voltage, electric current,
, information such as harmonic wave, decompression record, the branch different time sections was regularly stored and was regularly uploaded every day, finished remote meter-reading function.
Each substation main control unit of circuit regularly is uploaded to master station's main control unit with data by wireless mode, master station carries out balanced type calculating to each substation power consumption data and master station's power consumption data, produce the line loss data of circuit and the electricity consumption data of whole piece circuit, regularly be uploaded to the supvr.Because the statistics of being had a few can be carried out simultaneously, eliminated the asynchronism of statistics, realized the on-line monitoring of circuit line loss data.
Automatic balance type line loss computing method are as follows:
Equipment reads ammeter data in real time by 485 communication interfaces, and stores.Equipment is monitored the ammeter operation conditions in real time by 485 communication interfaces, gives the keeper if any unusually then sending out warning information.
The abnormal information that collects generally has following several situation:
1, electric voltage exception
If equipment collect in the metered voltage of ammeter one mutually or an above mutually voltage be lower than 70% of rated voltage, and lastingly will send warning message automatically more than 10 minutes: the voltage circuit dividing potential drop.
2, current anomaly
Equipment collects in the three-phase current of metering of ammeter maximum current greater than 1.8 times of minimum current, and continues will send warning message automatically more than 10 minutes: electric current is seriously uneven.
3, power factor is unusual
Equipment collects power factor in the ammeter between 0.2 to 0.86 and continue will to send warning message automatically more than 10 minutes: power factor is low.
Device is suitable to be fixedly mounted in the electric energy meter batch meter, and the erecting stage is had excellent adaptability: both can will install suspension by hook, also can will install absorption by device magnet base and install.
With reference to the accompanying drawings 4, the concrete operations step is as follows:
1, inserts SIM cards of mobile phones, the record phone number
With the switch of thin screwdriver press device SIM card seat, eject Kato, SIM card correctly is placed on the Kato and Kato is pushed deck put in place.The phone number of this SIM card is recorded on the label.
2, the GSM antenna is installed
The cable end of antenna is connected fastening nut with the antennal interface 5 of device; Can utilize the magnetic of antenna base to select the absorption of irony plane to fix up an aerial wire.
3, wiring
Power lead is received on the working power, and power line terminal is connected the power interface 1 of equipment.Check that earlier the output voltage of determining the electric energy meter voltage terminal satisfies AC/DC50～256V before connecting working power.
4, the observation that powers on
Determine that wiring is correctly good, for device powers on and the state of observation state pilot lamp and two pilot lamp of signal lamp.
Status indicator lamp and signal lamp have been indicated the running status and the GSM communication state of device respectively.After device powers on
Quickflashing shows that device just searching for the GSM network, and about 1 minute, the signal lamp quickflashing shows that for several times the GSM communication is normal, after device receives the GSM communication signal, signal lamp can quickflashing for several times.Status indicator lamp flicker in per 1.5 seconds once shows that device enters duty.
5, communication debugging
After the normal operation of equipment, send short messages to device number, signal lamp will quickflashing 5-6 second.Equipment returns note if desired, signal lamp again can quickflashing 5-6 second.Can call every electricity consumption data by sending out SMS to the corresponding phone number of device.The communication protocol of the utility model acquiescence is DL/T645 stipulations promulgated by the ministries or commissions of the Central Government, the self-adaptation baud rate.
The mode of connection has two kinds, and Fig. 2 is for monopolizing the electric energy meter communication interface mode of connection.Fig. 3 is for sharing the electric energy meter communication interface mode of connection with miscellaneous equipment.
Claims (4)
1, automatic balance type line loss on-line monitoring instrument comprises little power consumption CPU, serial communication interface, power circuit, wide-range voltage input harmonics Acquisition Circuit, it is characterized in that also comprising: wireless communication module, SIM card interface, antennal interface, expansion interface.
2, automatic balance type line loss on-line monitoring instrument according to claim 1, it is characterized in that: described power circuit can be exported 3.3V, 4.2V, 5V, 12V voltage.
3, automatic balance type line loss on-line monitoring instrument according to claim 1, it is characterized in that: described expansion interface can connect one or more in high-voltage radio mutual inductor, remote control unit, metering units, on-line monitoring unit, magnetic field, passage switch unit, the remote-wireless Transmit-Receive Unit.
4, automatic balance type line loss on-line monitoring instrument according to claim 1 and 2, it is characterized in that: after working power inserts described power circuit, earlier through wave filter, arrive rectifier bridge then, rectifier bridge will insert voltage and become direct current by interchange, enter transformer again, transformer is exported three groups of voltage: DC24V, DC12V, DC5V, and 24V exports 4.2V later on through step-down chip LM2596 and uses for wireless communication module; 12V goes out two groups, and the expansion interface of a group of access equipment is powered to expansion module, and another group uses for 485 chips of equipment and 485 communication interfaces through becoming 5V behind the stabilivolt 7805; VCC powers to CPU through becoming 3.3V behind the stabilivolt 1117.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201781751U CN201314935Y (en) | 2008-11-21 | 2008-11-21 | Automatic balancing on-line line loss monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201781751U CN201314935Y (en) | 2008-11-21 | 2008-11-21 | Automatic balancing on-line line loss monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201314935Y true CN201314935Y (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201781751U Expired - Fee Related CN201314935Y (en) | 2008-11-21 | 2008-11-21 | Automatic balancing on-line line loss monitor |
Country Status (1)
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| CN (1) | CN201314935Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192901A (en) * | 2017-04-28 | 2017-09-22 | 国网山东省电力公司寿光市供电公司 | A kind of underground cable detection device for preventing from fraudulent |
| CN109613379A (en) * | 2019-01-17 | 2019-04-12 | 南京绿电智能科技有限公司 | A kind of line loss modular device |
-
2008
- 2008-11-21 CN CNU2008201781751U patent/CN201314935Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192901A (en) * | 2017-04-28 | 2017-09-22 | 国网山东省电力公司寿光市供电公司 | A kind of underground cable detection device for preventing from fraudulent |
| CN109613379A (en) * | 2019-01-17 | 2019-04-12 | 南京绿电智能科技有限公司 | A kind of line loss modular device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAODING GREENERGY ELECTRIC POWER TECHNOLOGY CO., L Free format text: FORMER OWNER: BEIJING GREENERGY ELECTRIC TECHNOLOGY CO., LTD. Effective date: 20140107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100085 HAIDIAN, BEIJING TO: 071051 BAODING, HEBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140107 Address after: 071051, 86 Spruce Road, new urban district, Hebei, Baoding Patentee after: Baoding Xinyuan Green Power Technology Co. Ltd. Address before: 100085 room 5, building 1, No. 310, Nongda South Road, Beijing, Haidian District Patentee before: Beijing Greenergy Electric Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20161121 |