CN202486224U - Line loss measuring and calculating device of power distribution network - Google Patents

Line loss measuring and calculating device of power distribution network Download PDF

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Publication number
CN202486224U
CN202486224U CN2011205012628U CN201120501262U CN202486224U CN 202486224 U CN202486224 U CN 202486224U CN 2011205012628 U CN2011205012628 U CN 2011205012628U CN 201120501262 U CN201120501262 U CN 201120501262U CN 202486224 U CN202486224 U CN 202486224U
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CN
China
Prior art keywords
line loss
power distribution
distribution network
concentrator
data
Prior art date
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CN2011205012628U
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Chinese (zh)
Inventor
贺雪敏
陆阳
兰才进
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兰才进
贺雪敏
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Priority to CN2011205012628U priority Critical patent/CN202486224U/en
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Publication of CN202486224U publication Critical patent/CN202486224U/en

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Abstract

The utility model discloses a line loss measuring and calculating device of a power distribution network, and belongs to the power distribution field. The device includes at least one line loss collector and a line loss concentrator. The line loss collector is arranged on the tail of the power distribution network, and is connected with one or multiple ammeters of terminal users to collect the data of one or multiple ammeters of the terminal users and to transmit the collected data to the line loss concentrator. The line loss concentrator is arranged on a transformer side of the power distribution network and is used for collecting the line electrical parameter data of the power distribution network, receiving the data of at least one line loss collector, and calculating the line loss value based on the line electrical parameter data and the data collected by at least one line loss collector. The device uses the line loss collector and the line loss concentrator to collect the current and the voltage of the power distribution network in real time, and the automatic collection and calculation makes the line loss measuring and calculating process simpler and more accurate, and the measuring and calculating period is shortened.

Description

The line loss measuring and calculating device of power distribution network

Technical field

The utility model relates to the distribution field, particularly a kind of line loss of power distribution network measuring and calculating device.

Background technology

In the power transmission and distribution process, the transmission of electric energy and the conversion of electromagnetic energy all realize through electric current.Electric current can produce loss during through lead, and in the transmission network of electric power a large amount of transformers is arranged, equipment such as switch, instrument also can consume certain energy, generally the energy loss in the power system power supply process is called line loss.At present, energy-saving and cost-reducing research, line loss dividing potential drop statistics, line loss are added up to the family, power industry to line loss fine-grained management have higher requirement.

The line loss measuring and calculating of existing 400V power distribution network is relying on software and personnel's statistical means always; On behalf of day statistics and rms current method, the computed in software theory wire loss adopts calculate, and needs parameters such as input power factor, k-factor, is not real time on-line monitoring; And the influence that can not actually consider the three-phase imbalance rate of circuit to line loss; Power factor (PF), k-factor, three-phase imbalance rate are huge to the line loss influence, when reaching 100% like the three-phase imbalance rate, and when line loss per unit is balance 6 times.Pattern is added up, reported step by step to the existing manual metering that adopts.

In the process that realizes the utility model, the inventor finds that there is following problem at least in prior art:

Prior art is owing to rely on software and manual metering, and the workload of manual metering is big, measuring process is complicated, the easy distortion of statistics and lack the effective closed-loop supervision means, and the measured value of line loss is meticulous inadequately.

The utility model content

The fineness that the workload of manual metering is big when measuring in order to lower existing line loss, the reduction measuring process is complicated, improve the line loss value of measuring and calculating, the utility model embodiment provides a kind of line loss measuring and calculating device of power distribution network.Said technical scheme is following:

The utility model provides a kind of line loss measuring and calculating device of power distribution network, said device comprises at least one line loss collector and line loss concentrator:

Said line loss collector comprises acquisition chip and power carrier communication module at least; Said line loss collector is installed in the power distribution network end; The ammeter that connects one or more terminal users; Be used to gather the data of said one or more terminal users' ammeter, and said data are sent to the line loss concentrator;

Said line loss concentrator comprises handing at least adopts chip and carrier chip; Said line loss concentrator is installed in the transformer side of power distribution network; Be used to gather the line electricity parametric data of power distribution network; Receive the data that at least one line loss collector is gathered, and calculate the line loss value according to the data of said line electricity parametric data and said at least one line loss collector collection.

Wherein, said line loss collector is connected with connection with the power lead of terminal user's ammeter.

Wherein, the data of said line loss collector collection specifically comprise: the meritorious degree of opinion of copying of the power factor of the address of terminal user's ammeter, the electric current of ammeter, ammeter, the voltage of ammeter and ammeter.

Wherein, said line loss concentrator comprises flush bonding processor at least, hands over and adopt and carrier channel module, synchronous DRAM chip and flash memory circuit;

Said friendship is adopted and carrier channel module, synchronous DRAM chip and flash memory circuit all are electrically connected with said flush bonding processor alternately, said friendship adopt and the carrier channel module in comprise handing over and adopt chip and carrier chip;

Said friendship is adopted and the carrier channel module is connected with CT with each phase voltage of power distribution network through connection terminal, and said synchronous DRAM chip and said flash memory circuit are used to store data.

Wherein, said line loss concentrator also comprises dot matrix LCD module, and said dot matrix LCD module and said flush bonding processor carry out man-machine interaction.

Wherein, said line loss concentrator also comprises wireless module, and said wireless module is electrically connected with said flush bonding processor alternately.

Wherein, said line loss concentrator also comprises usb data interface and local debug serial port, and said usb data interface and local debug serial port are electrically connected with said flush bonding processor respectively alternately.

Wherein, said line loss concentrator also comprises PMU, and said PMU is electrically connected with said flush bonding processor alternately.

The beneficial effect that the technical scheme that the utility model embodiment provides is brought is: through adopting line loss collector and line loss concentrator data such as the electric current of power distribution network, voltage are gathered in real time; Automatic collection and calculating make line loss measuring and calculating process simple more and accurate; Shortened the measuring and calculating cycle simultaneously; The measuring and calculating device of the power line transmission network technology that possesses real-time measurement 400V power distribution network that present embodiment provides; Real-time is measured the line loss value that calculates is leveled off to the theory wire loss value more, calculates loaded down with trivial details theory wire loss to have become simple automatic calculation display.

Description of drawings

In order to be illustrated more clearly in the technical scheme among the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of the line loss measuring and calculating device of the power distribution network that provides among the utility model embodiment 1;

Fig. 2 is the structural representation of the line loss measuring and calculating device of the power distribution network that provides among the utility model embodiment 2;

Fig. 3 is the structural representation of the line loss concentrator that provides among the utility model embodiment 2;

Fig. 4 is another structural representation of the line loss concentrator that provides among the utility model embodiment 2.

Embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model embodiment is done to describe in detail further below.

Embodiment 1

Referring to Fig. 1, present embodiment provides a kind of line loss measuring and calculating device of power distribution network, and said device comprises at least one line loss collector 101 and line loss concentrator 102:

Said line loss collector 101 comprises acquisition chip and power carrier communication module at least; Said line loss collector is installed in the power distribution network end; The ammeter that connects one or more terminal users; Be used to gather the data of said one or more terminal users' ammeter, and said data are sent to the line loss concentrator;

Said line loss concentrator 102 comprises handing at least adopts chip and carrier chip; Said line loss concentrator is installed in the transformer side of power distribution network; Be used to gather the line electricity parametric data of power distribution network; Receive the data that at least one line loss collector is gathered, and calculate the line loss value according to the data of said line electricity parametric data and said at least one line loss collector collection.

The line loss measuring and calculating device of the power distribution network that present embodiment provides; Through adopting line loss collector and line loss concentrator data such as the electric current of power distribution network, voltage are gathered in real time; Automatic collection and calculating make line loss measuring and calculating process simple more and accurate; Shortened the measuring and calculating cycle simultaneously; Present embodiment provides possesses the measuring and calculating device of the power line transmission network technology of real-time measurement 400V power distribution network, and real-time is measured the line loss value that calculates is leveled off to the theory wire loss value more, calculates loaded down with trivial details theory wire loss to have become simple automatic calculation display.

Embodiment 2

Referring to Fig. 2, present embodiment provides a kind of line loss measuring and calculating device of power distribution network, and said device comprises at least one line loss collector 201 and line loss concentrator 202;

Line loss collector 201 is installed in the power distribution network end, connects one or more terminal users' ammeter, is used to gather the data of one or more ammeters of connection, and the data that collect are sent to line loss concentrator 202 through built-in power carrier communication module.

Wherein, Present embodiment is a kind of line loss measuring and calculating device that proposes to low-voltage network, and the line loss collector is positioned at the power distribution network tip, is electrically connected through connection with terminal user's ammeter; That is to say; According to the wiring diagram on line loss collector and the meter case terminal cap, the circuit collector is connected with connection (generally adopting 485 lines) with the power lead of ammeter, a line loss collector connects one or more terminal users' ammeter.It is errorless to detect connection; After line loss collector and ammeter power on; Carry out image data when line loss collector and ammeter operate as normal, the data that collect specifically comprise: the meritorious degree of opinion of copying of the power factor of the address of terminal user's ammeter, the electric current of ammeter, ammeter, the voltage of ammeter and ammeter.The line loss collector is transferred to the line loss concentrator with the data that collect with PLC (Power Line Communication, power line communication) mode.

Line loss concentrator 202 is installed in the transformer side of power distribution network, receives the image data that the line loss collector sends according to built-in carrier channel, and calculates the line loss value according to the data of line loss collector collection with the line electricity parametric data of self gathering.

Particularly, the line loss concentrator is fixed in the metering cabinet of transformer user side of power distribution network, opens line loss concentrator tail-hood, and the main electrical scheme terminal connects by three-phase four-wire system, but line loss concentrator operate as normal just, and operation powers on after the inspection wiring is errorless.The line loss concentrator adopts the power carrier mode, adopts the SoC (Systemon Chip, SOC(system on a chip)) of a plurality of chips such as integrated carrier communication DSSS unit, has real-time all parameters of demonstration distribution transforming.This line loss concentrator can also combine transformer parameter to calculate measuring transformer copper loss, iron loss.

After the line loss concentrator powers on; Viewing lamp and screen interface; Whether the power light in the back observation line loss that the powers on concentrator is just usually bright, when back program that local wireless module or friendship are adopted and the carrier channel module powers on normally starts initialization, can let the data transmit-receive lamp dodge simultaneously.Power on a bit of time stable after, power lights Chang Liang, DCD lamp Chang Liang, duty lamp dodge always.Streams data is arranged during the PPP dialing behind the module stability in addition, at this moment the data transmit-receive pilot lamp of several piece can dodge.It is unusual not dodge specification module like the duty lamp, can repeat the start-up course cutting off the power supply, power on, reset when module is unusual, and this section process can observe out through pilot lamp.

The concrete structure of line loss concentrator is as shown in Figure 3 in the present embodiment; The line loss concentrator comprises flush bonding processor 202a, hands over and adopt and carrier channel module 202b, SDRAM (Synchronous Dynamic RandomAccess Memory, synchronous DRAM) chip 202c and NandFlash (flash memory) circuit 202d.Friendship is adopted and carrier channel module 202b, SDRAM chip 202c, NandFlash circuit 202d all are electrically connected with 32 flush bonding processor 202a alternately.

Wherein, flush bonding processor is the core of line loss concentrator, and it adopts industrial rank high speed monolithic processor, mainly carries out data computation and handles, gathers and to the control of peripheral components, can be 32 flush bonding processors, 64 flush bonding processors etc.

Friendship is adopted and the carrier channel module is connected with CT with each phase voltage of power distribution network through connection terminal, and realization is connected with power distribution network.This friendship adopt and the carrier channel module in integrated the friendship adopt chip and carrier chip; Friendship is adopted chip and can be gathered signals such as the three-phase voltage of power distribution network, electric currents; Promptly gather based on alternating current; Can adopt the AD77 series of ADI company, CS546X series etc., present embodiment does not limit the concrete model that chip and carrier chip are adopted in friendship; Signal condition and ALT-CH alternate channel that carrier chip mainly provides alternating-current parameter to gather also are the passages of externally fed simultaneously, the more important thing is the passage of carrier communication, can adopt PL21 series, PL32 series etc. to realize the power line carrier communication function.

SDRAM chip and NandFlash circuit are as the data storage of line loss concentrator and the device of interim storage; The capacity of SDRAM and NandFlash circuit is bigger; Guaranteed hardware resource required when the line loss concentrator moves complicated process, display interface and succinct button are fit to the conventional man-machine interaction work of industry spot.

In addition; This line loss concentrator also comprises dot matrix LCD module 202e, wireless module 202f, 6 key board modules, local debug serial port 202h, usb data interface 202i and PMU 202j, and this dot matrix LCD module, wireless module, 6 key board modules, usb data interface, local debug serial port and PMU also all are electrically connected with 32 flush bonding processors alternately.

Dot matrix LCD module 202e is a LCDs, is used to provide local operation and data presentation.The user can be according to this dot matrix LCD module input parameter, and after the line loss concentrator was accomplished the calculating to line loss, this dot matrix LCD module line loss value showed.

Wireless module 202f is the module of telecommunication, comprises GPRS and short message.The line loss concentrator can be transferred to the center, backstage with the line loss value of current acquisition through wireless module, makes the staff at center, backstage can obtain the line loss value that calculates fast.

The local debug serial port 202h that reserves is used for field adjustable and program updates work, maintains easily.

The usb data interface 202i that reserves is used to store the supplementary means of data and the interface reserved, and is convenient in the local storage of large-capacity data extensibility, and the real time record of field data.

PMU 202j adopts three phase supply, can not cause outage because of phase shortage, also bears the function of the back-up source that real-time clock is provided, even the external power source power down, clock circuit also has back-up source and works on.

6 key board modules are local operation push-buttons of importing, checking, revise, and the user also can be according to 6 key board module input parameters, and the line loss concentrator is carried out button operation.

The course of work of line loss measuring and calculating device is specific as follows:

Line loss measuring and calculating device is when initially restoring electricity or receiving artificial starting order; The mode of employing power line carrier, PLC is set up the corresponding relation of line loss collector and line loss concentrator; This period of setting up corresponding relation is called registration phase, and the signal of carrier communication can not pass to the high-pressure side of transformer.After succeeding in registration, sending instructions under the line loss concentrator changes real-time image data mode over to the line loss collector.

In the practical application, in preset measured zone, can one or more line loss collectors and a line loss concentrator be installed according to the concentration degree of electric supply meter, a line loss collector connects one or more terminal users' ammeter.The line loss collector that set up this moment and the corresponding relation of line loss concentrator can be the corresponding line loss collector of a line loss concentrator, and the corresponding one or more terminal users' of this line loss collector ammeter; Also can be the corresponding a plurality of line loss collectors of a line loss concentrator, and the corresponding one or more terminal users' of each line loss collector ammeter.

Below with the corresponding a plurality of line loss collectors of line loss concentrator, and the corresponding a plurality of terminal users' of line loss collector ammeter is that example describes:

After the ammeter that the line loss collector is gathered a plurality of terminal users obtains multi-group data, can this multi-group data be sent to the line loss concentrator as the data that collect, calculate by the line loss concentrator; Also can carry out analytical calculation to multi-group data earlier, obtain an intensive data of a plurality of ammeters of line loss collector collection, this intensive data is sent to the line loss concentrator as the data that collect.At this moment, the multi-group data of one or more ammeters that line loss collector storage of collected arrives, and the intensive data that obtains of inventory analysis.

The line loss collector is transferred to the line loss concentrator with the data of gathering through built-in power carrier communication module, calculates for the line loss concentrator.Line loss concentrator self can be gathered the line electricity parametric data of current circuit, and stores this line electricity parametric data; After receiving a plurality of data of a plurality of line loss collectors transmissions, store this data, and according to the line loss value that obtains current circuit after line electricity parametric data and a series of computings of a plurality of data process.These data can be an intensive data of line loss collector transmission, also can be the integrated data of the corresponding a plurality of ammeters of each line loss collector.

For the accuracy that guarantees to calculate; The frequency of present embodiment image data is to gather once in 1 minute; The line loss concentrator carries out this locality storage at chip internal, according to DL/T 686-1999 " power network line losses calculating guide rule " after receiving the data that the line loss collector transmits; Calculate the technological line loss of power distribution network in real time, solved the big problem of line loss Theoretical Calculation workload.

In the present embodiment; The real-time theory wire loss of line loss concentrator calculates and measuring process; Follow the principle of accuracy and practicality; Computing method adopt the respective standard of the power industry standard DL/T 686-1999 of the People's Republic of China (PRC) " power network line losses calculating guide rule ", except calculating the line loss value, can also combine transformer parameter to calculate measuring transformer copper loss and transformer iron loss.

The line loss concentrator ability independent operating of this device is measured power distribution network separately.During independent operating, by client's actual conditions, can direct-on-line decrease and carry out on the concentrator that native's part work and part study is got, wirelessly read, notebook computer reads etc.

The line loss measuring and calculating device of the power distribution network that present embodiment provides; Through adopting line loss collector and line loss concentrator data such as the electric current of power distribution network, voltage are gathered in real time; Automatic collection and calculating make line loss measuring and calculating process simple more and accurate; Shortened the measuring and calculating cycle simultaneously; Present embodiment provides possesses the measurement mechanism of the power line transmission network technology of real-time measurement 400V power distribution network, and real-time is measured the line loss value that calculates is leveled off to the theory wire loss value more, calculates loaded down with trivial details theory wire loss to have become simple automatic calculation display.

The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims (7)

1. the line loss of a power distribution network is calculated device, it is characterized in that said device comprises at least one line loss collector and line loss concentrator:
Said line loss collector comprises acquisition chip and power carrier communication module at least; Said line loss collector is installed in the power distribution network end; The ammeter that connects one or more terminal users; Be used to gather the data of said one or more terminal users' ammeter, and said data are sent to the line loss concentrator;
Said line loss concentrator comprises handing at least adopts chip and carrier chip; Said line loss concentrator is installed in the transformer side of power distribution network; Be used to gather the line electricity parametric data of power distribution network; Receive the data that at least one line loss collector is gathered, and calculate the line loss value according to the data of said line electricity parametric data and said at least one line loss collector collection.
2. the line loss of power distribution network as claimed in claim 1 measuring and calculating device is characterized in that said line loss collector is connected with connection with the power lead of terminal user's ammeter.
3. the line loss of power distribution network as claimed in claim 1 measuring and calculating device is characterized in that, said line loss concentrator comprises flush bonding processor at least, hands over and adopt and carrier channel module, synchronous DRAM chip and flash memory circuit;
Said friendship is adopted and carrier channel module, synchronous DRAM chip and flash memory circuit all are electrically connected with said flush bonding processor alternately, said friendship adopt and the carrier channel module in comprise handing over and adopt chip and carrier chip;
Said friendship is adopted and the carrier channel module is connected with each phase voltage summation current transformer CT of power distribution network through connection terminal, and said synchronous DRAM chip and said flash memory circuit are used to store data.
4. the line loss of power distribution network as claimed in claim 3 measuring and calculating device is characterized in that said line loss concentrator also comprises dot matrix LCD module, and said dot matrix LCD module and said flush bonding processor carry out man-machine interaction.
5. the line loss of power distribution network as claimed in claim 4 measuring and calculating device is characterized in that said line loss concentrator also comprises wireless module, and said wireless module is electrically connected with said flush bonding processor alternately.
6. the line loss of power distribution network as claimed in claim 5 is calculated device; It is characterized in that; Said line loss concentrator also comprises usb data interface and local debug serial port, and said usb data interface and local debug serial port are electrically connected with said flush bonding processor respectively alternately.
7. the line loss of power distribution network as claimed in claim 6 measuring and calculating device is characterized in that said line loss concentrator also comprises PMU, and said PMU is electrically connected with said flush bonding processor alternately.
CN2011205012628U 2011-12-05 2011-12-05 Line loss measuring and calculating device of power distribution network CN202486224U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928721A (en) * 2012-11-14 2013-02-13 余姚市供电局 Line loss concentrator
CN102931657A (en) * 2012-11-14 2013-02-13 余姚市供电局 Measuring and calculating device for line loss of power distribution network
CN102957145A (en) * 2012-11-19 2013-03-06 余姚市供电局 Budgeting device of line loss of power distribution network
CN102998561A (en) * 2012-11-22 2013-03-27 余姚市供电局 Device and system for detecting line loss
CN103063952A (en) * 2012-12-20 2013-04-24 余姚市供电局 Line loss concentrator
CN105301449A (en) * 2015-11-24 2016-02-03 国家电网公司 Portable line loss measuring and calculating apparatus for power distribution network
DE102015117809A1 (en) * 2015-10-20 2017-04-20 Hella Kgaa Hueck & Co. Method for operating a line system
CN107015082A (en) * 2017-05-02 2017-08-04 国网山东省电力公司滨州供电公司 A kind of Line Loss of Distribution Network System detection means

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928721A (en) * 2012-11-14 2013-02-13 余姚市供电局 Line loss concentrator
CN102931657A (en) * 2012-11-14 2013-02-13 余姚市供电局 Measuring and calculating device for line loss of power distribution network
CN102957145A (en) * 2012-11-19 2013-03-06 余姚市供电局 Budgeting device of line loss of power distribution network
CN102998561A (en) * 2012-11-22 2013-03-27 余姚市供电局 Device and system for detecting line loss
CN103063952A (en) * 2012-12-20 2013-04-24 余姚市供电局 Line loss concentrator
DE102015117809A1 (en) * 2015-10-20 2017-04-20 Hella Kgaa Hueck & Co. Method for operating a line system
CN105301449A (en) * 2015-11-24 2016-02-03 国家电网公司 Portable line loss measuring and calculating apparatus for power distribution network
CN107015082A (en) * 2017-05-02 2017-08-04 国网山东省电力公司滨州供电公司 A kind of Line Loss of Distribution Network System detection means

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