CN105044487B - A kind of area's line loss exception audit system and method - Google Patents
A kind of area's line loss exception audit system and method Download PDFInfo
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Abstract
Present invention mainly discloses a kind of area's line loss exception audit system and method, audit system includes the outlet switch for being installed on platform area, checks instrument at branch's electricity box, this checks that instrument includes three-phase CT table, fast-assembling wire clamp and open-close type current transformer；The fast-assembling wire clamp is mounted on outlet switch, the breaker outgoing line side at branch's electricity box, is used for collection voltages；The open-close type current transformer is mounted on outlet switch, the breaker outgoing line side at branch's electricity box, for acquiring electric current；The three-phase CT table is connect with fast-assembling wire clamp and open-close type current transformer by conducting wire, three-phase CT table, which is equipped with, is transferred to main station system for the voltage and current information of acquisition, main station system can be with fast finding abnormal point by data analysis, shortening judges the time, it improves efficiency, the fellow peers' evaluation index for improving platform area line loss retrieves the economic loss of line loss loss.
Description
Technical field
The present invention relates to a kind of area's line loss exception audit system and methods, are mainly used in the line loss row of platform area route
It looks into.
Background technique
Information-based, automation, it is interactive be power information acquisition system development direction.On the basis of acquisition all standing
On, the line loss data acquisition on route is the important goal in the developing direction, and there is also blind for this kind of line loss data acquisition at present
Point, there are no individual collectors for the branch line and the service conductor of user that feature is the area Gong Biantai, undoubtedly increase platform area line loss
The difficulty of abnormality processing and time.Line loss per unit is an integrated technology economic indicator, its size can represent power supply enterprise
The management level of industry, and it is closely bound up with its economic benefit.Line loss per unit is also that country implements energy saving policy, examines power supply enterprise
One important indicator.And low-voltage platform area line loss refer to voltage at 10kV and situation below caused by line loss, it is in power train
Occupy very big specific gravity in the loss of system, due to not noticeable, and be easy to ignore, so corresponding measure is taken to reduce low-voltage platform area
Loss for China's power grid, a large amount of electric energy can be saved, have very big loss-reducing and electricity-saving potentiality, mesh foreground partition line loss according to
Management layer, which is started with, to be divided into three classes: 1, theory wire loss；2, technical loss；3, line loss is managed.It is easiest to the place gone wrong
There is the following aspects:
(1) the platform area higher for line loss, power department are difficult to that effective mode is taken to check failure because range compared with
Greatly, it may be possible to which line fault, to be likely to be measuring equipment abnormal etc., needs to put into a large amount of manpower and material resources, and most of
Manpower investigation work does not generate direct value；
(2) existing power information acquisition system is in blind area for piecemeal, segmentation line loss analyzing under platform area, it is difficult to be provided with
The means of effect assist to reduce line loss accident analysis range；
(3) when platform area line loss is higher, it is accordingly required in particular to reduce investigation range, but current technology by way of piecemeal, segmentation
Means cannot be supported effectively.
Summary of the invention
The technical problem to be solved in the invention is to provide a kind of area's line loss exception audit system and method, passes through platform
Area's line loss audit system can quickly search line anomalies point with blockette line loss analyzing, improve investigation efficiency, improve platform area line loss
Fellow peers' evaluation index, retrieve line loss loss economic loss.
The technical scheme is that a kind of area's line loss exception audit system, audit system includes being installed on platform area
Instrument is checked at outlet switch, branch's electricity box, this checks that instrument includes three-phase CT table, fast-assembling wire clamp and open-close type current transformer；
The fast-assembling wire clamp is mounted on outlet switch, the breaker outgoing line side at branch's electricity box, is used for collection voltages；The open-close type electricity
Current transformer is mounted on outlet switch, the breaker outgoing line side at branch's electricity box, for acquiring electric current；The three-phase CT watch and fast
Wiring folder and open-close type current transformer are connected by conducting wire, and the three-phase CT table is equipped with the voltage and current information that will be acquired
It is transferred to the GPRS communication module of main station system.
Preferably, described to check that instrument includes meter electricity box, the three-phase CT table is set in meter electricity box.
Preferably, the meter electricity box are equipped with top matter storage lattice and lower part matter storage lattice, and three-phase CT table is fixed on top storing
In lattice, the fast-assembling wire clamp and open-close type current transformer are individually positioned in when not in use in two lower part matter storage lattices.
Preferably, the demarcation plate between the lower part matter storage lattice and top matter storage lattice is equipped with the line for facilitating conducting wire to pass through
Slot, lower part matter storage lattice side wall or bottom wall are equipped with the through-hole being pierced by for conducting wire.
Preferably, the meter electricity box back is equipped with arc-shaped hoop component, and hoop component includes being fixed on meter electricity box back
The cross section of the fixed plate and movable plate in portion, fixed plate and movable plate is arc-shaped.
In addition, the present invention also provides the platform area line loss exception auditing method based on above-mentioned audit system, the main website
System includes the GPRS receiving module for timing or artificial reception from GPRS communication module transmission signal, and GPRS is received
Module is connected with data analysis module, and the data analysis module is by the voltage received, current information based on built-in line loss
It calculates formula and calculates the line loss per unit between public transformer terminals variable and branch, emphasis checks this when line loss per unit is less than 0 or greater than 8%
The electricity service condition of bifurcation；Data analysis module can be calculated under branch's electricity and branch's electricity by line loss calculation formula and be connect
Line loss between access point user's electricity can confirm that there are problems for the branch when line loss per unit is greater than 8%；Data analysis module according to
Branch's split-phase electricity carries out analytical calculation with the access point user of corresponding phase, when the phase line loss per unit is greater than 8%, the lockable phase
There are problems by user.
Preferably, the line loss per unit calculation formula between the public transformer terminals variable and branch are as follows: line loss per unit=(public transformer terminals
Electricity-branch's total electricity)/public affairs change total electricity.
Preferably, the line loss per unit calculation formula under branch's electricity and branch's electricity between access point user's electricity
Are as follows: line loss per unit=(branch's electricity-branch service electricity)/branch's electricity.
It preferably, include line loss formula custom block, the data analysis module in the data computation module
Including the archives data module for importing the original electricity consumption data of community user under platform area.
After adopting the above technical scheme, the present invention has the advantage that
Data and main station system intercommunication are acquired, line loss fault coverage is reduced: by being installed at outlet switch, branch's electricity box
Corresponding platform area line loss checks equipment extremely, and remotely arrives main station system using GPRS communication module, in conjunction on main station system
Line loss management system of local electric network reduces line loss fault coverage；It can be combined with resident's meter, the public continuous data for becoming summary table, carry out blockette
Line loss analyzing.
There is provided can Fast Installation, disassembly metering device: tradition at outlet switch, branch's electricity box install metering device,
It generally requires to carry out power down process to route, and corresponding CT and measurement meter is installed, step is complicated.And only for line loss problem
When investigation, it is also necessary to which quickly installation, problem can be removed quickly and can be reused after checking, the fast wiring in the present invention
Power down process is not needed when folder and open-close type current transformer access, and installs and remove very convenient, assembling and disassembling
Journey does not cause any adverse effect to outlet switch, branch's electricity box.
Detailed description of the invention
Attached drawing 1 is schematic view of the mounting position of the invention；
Attached drawing 2 is the connection schematic diagram of the invention with breaker；
Attached drawing 3 is three dimensional structure diagram of the invention；
Attached drawing 4 is back schematic diagram of the present invention；
Attached drawing 5 is the information about power schematic diagram of certain bifurcation acquisition.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figures 1 to 4, a kind of area's line loss exception audit system is equipped at the outlet switch in platform area, branch's electricity box
Breaker 1, breaker installation checks instrument, checks that instrument includes three-phase CT table 2, and the three-phase CT table has picked out 7 conducting wires, wherein
4 wire ends are respectively equipped with fast-assembling wire clamp 3, and Full-plastics sealed crocodile clip can be used in fast-assembling wire clamp, and in addition 3 wire ends, which are equipped with, opens
Box-like current transformer 4, the fast-assembling wire clamp access in the breaker and measure voltage, and access point is on breaker respectively
A phase, B phase, C phase and neutral conductor N phase, just 4 conducting wires can be convenient to quickly access using crocodile clip and measure on breaker
Voltage, the open-close type current transformer are set to breaker outgoing line end and measure leading-out terminal electric current, open-close type current transformer master
It is mounted on outlet circuit breaker output lead, three open-close type current transformers are one group, just match 3 conducting wires, such
The bundle of outputs of breaker, without power-off, need to be only placed by current transformer in the on-state in installation, disassembly process
Very convenient in round induction coil, when practical operation, can select the current transformer of different size according to the actual situation:
Such as 600A/5A, 400A/5A, 200A/5A, 100A/5A etc., the three-phase CT table is interior to be equipped with collection voltages or current information
It is transferred to the GPRS communication module of main station system, will can carry out data analysis on data remote transmission to main station system in time,
After the audit system, effect clearly: one, by taking 1 low-voltage platform area as an example, abnormal check equipment by installing and combine
Low-voltage platform area line loss can be reduced to 3% or so from 10%, each 200 family (moon of area by low-voltage platform area line loss analyzing management software
Equal electricity consumption 100kWh) left and right, reduce loss 1400kWh/ platform area the moon, 1 county telephone central office's platform area quantity about 500 reduces loss the moon
700,000kWh/ platform areas save about 350,000 yuan/month of loss；Two, the promotion of platform area line losses indices, the power distribution network also pushed indirectly
The promotion of planning management, operational management, overhaul management, marketing power consumption management, management through quantification, recording, checking, and charging management etc., comprehensively
Enterprises of managing electric wire netting are improved to the management level of platform area equipment and user.
As shown in Figure 3 to Figure 4, when specific equipment is installed and acquired, the audit system further includes meter electricity box 5, due to
Outlet switch, the electricity box space of branch's electricity box it is limited, be difficult place a three-phase CT table, so this programme select one
Dedicated meter electricity box place three-phase CT meter, and meter electricity box include cabinet and upper cover, and outlet switch, branch list are mounted on when using cabinet
Beside case, facilitate installation and disassembly, preferably, the cabinet is equipped with top matter storage lattice and lower part matter storage lattice, three-phase CT table
It is fixed in the matter storage lattice of top, the fast-assembling wire clamp and open-close type current transformer are individually positioned in when not in use under two
In portion's matter storage lattice, so that patrol officer carries when not in use and gets up more convenient, relevant wire harness can be with fast-assembling after batching
Wire clamp and open-close type current transformer are put into togerther into lower part matter storage lattice, check that equipment is led in normal use in addition to allowing
Line harness does not seem in disorder, and the demarcation plate between the lower part matter storage lattice and top matter storage lattice, which is equipped with, facilitates conducting wire to pass through
Wire casing 51, wire casing can be set multiple on demarcation plate, and according to the number of conductors in the present invention, two lower part matter storage lattices can be set respectively
3 wire casings and 4 wire casings, so that route is more clear, lower part matter storage lattice side wall or bottom wall are equipped with the through-hole 52 being pierced by for conducting wire,
Because fast-assembling wire clamp and open-close type current transformer will be linked on breaker, conducting wire is all finally to extend meter
Outside electricity box, it is pierced by order to facilitate these conducting wires and is just provided with through-hole, the last dismounting for counting electricity box for convenience, the meter table
Case back is equipped with arc-shaped hoop component 53, and hoop component includes the fixed plate 531 and movable plate for being fixed on meter electricity box back
532, the cross section of fixed plate and movable plate be it is arc-shaped, general electricity box of counting all are fixed on utility poles or in PVC pipeline,
So arc-shaped shape is very suitable to mount and dismount.
Specific platform area line loss exception auditing method, is based primarily upon the line loss analyzing software of main station system, the main website
System includes the GPRS receiving module for timing or artificial reception from GPRS communication module transmission signal, and GPRS is received
Module is connected with data analysis module, data are exported chart to data analysis module or table is shown, can allow receiving
Data more intuitively show that concrete analysis mode is as follows:
The voltage received, current information are calculated public change by built-in line loss calculation formula by the data analysis module
Line loss per unit between terminal variable and branch, line loss per unit=public affairs transformer terminals electricity-branch's total electricity/public affairs become total electricity, work as line loss
When rate is greater than 8%, it is considered that there are failure, major influence factors to have for its branch: a, current transformer ratio be not right, and system becomes
Frequently live no-load voltage ratio is big；B. public transformer terminals error is larger, walks fast.When line loss per unit is less than 0%, major influence factors have: a,
Current transformer ratio is not right, and system no-load voltage ratio is smaller than live no-load voltage ratio；B, public transformer terminals error is larger, walks slow；C, Current Mutual Inductance
Polarity between device and public transformer terminals is reversed；D, the error connection between current transformer and public transformer terminals；E, current transformer with
Open phase fault (electric current phase shortage, electric sampling open-phase) between public transformer terminals；F, any one between current transformer and public transformer terminals
Grain screw is not tightened；G, power factor problem.Emphasis checks that the electricity of the bifurcation makes when line loss per unit is greater than 8% or less than 0%
Use situation；Data analysis module can also be used to analyze access point user's electricity under branch's electricity and the branch, i.e. data analyze mould
Block is calculated the line loss under branch's electricity and branch's electricity between access point user's electricity, calculation formula by line loss calculation formula
Are as follows: line loss per unit=branch's electricity-branch service electricity/branch's electricity, when line loss per unit is greater than 8%, which must be problematic；Number
It can also be used to analyze branch's split-phase electricity with access point user's comparision of quantity of electricity of corresponding phase according to analysis module, i.e. certain phase line loss per unit
Greater than 8%, other phase line losses per unit are in the normal range, so that it may lock phase user, the workload that investigation is got up in this way will
Few very much, effect is also best, it is further to note that public transformer terminals electricity is measured by public transformer terminals ammeter, branch's total electricity
According to the Current Voltage calculating for checking that instrument measures, branch service electricity is measured according to electric supply meter.
In addition data analysis module includes the archives data module for importing community user electricity consumption data under platform area, thus
Facilitate by collection in worksite to data with the user power utilization data that before import relatively, can also import other community user into
Row data comparison, to find differential point and improvement, according further to the actual conditions of each department, in the data computation module
Including line loss formula custom block, i.e., user customized setting total amount unit or can divide metering units, can also make by oneself
The calculation formula etc. of adopted line loss.
Concrete analysis citing, with the data instance in Fig. 5, public transformer terminals electricity 104.55- (A1-1 branch electricity
46.08)-(A2-1 branch electricity 58.45)=0.02kWh, line loss electricity only have 0.02kWh；
And A1-1 branch A phase electricity 21.15-A phase user electricity 21.07=0.08kWh, line loss electricity only have 0.08kWh；
A1-1 branch B phase electricity 10.12-B phase user electricity 10.08=0.04kWh, line loss electricity only have 0.04kWh；And A1-1 branch
C phase electricity 14.81-C phase user electricity 14.78=0.03kWh, line loss electricity only have 0.03kWh；
And A2-1 branch A phase electricity 51.15-A phase user electricity 39.47=11.68kWh, line loss electricity just have
11.68kWh；A2-1 branch B phase electricity 7.29-B phase user electricity 7.26=0.03kWh, line loss electricity only have 0.03kWh；And
A2-1 branch C phase electricity 0.01-C phase user electricity 0=0.01kWh, line loss electricity only have 0.01kWh；It can be seen that problem is just
Out on the A phase user of A2-1 branch, specific aim is very strong.
When practical operation, method is as follows when checking bifurcation:
A. devices collect data is checked extremely with platform area line loss and carry out Correlative data analysis in conjunction with system main website；
B. scene is checked: a platform distinguishes 3~5 people and goes to check, 20~40 pieces of a personal responsibility ammeter, and goes through
On branch line or access point takes up the place such as entrance line either with or without the condition for overlapping electric wire privately, and if any going through, whether there is or not overlap joints
Trace burns arc trace；
C. inspection of uncapping finishes, seal must title, alarm abnormal if any clock, the reversed instruction of polarity etc. are different when inspection
Reason condition please be recorded；
D. line loss situation is observed in a few days, it is such as also problematic, then live verification is gone, it uncaps and sees whether that seal is intact, such as
There is damage problematic；
E. as without exception, just have reason to suspect other problems: branch's split-phase lay particular stress on load, line powering radius whether mistake
Greatly, a variety of causes such as whether line footpath too small.
Only just the present invention preferably example is described above, but is not to be construed as limiting the scope of the invention.This hair
Bright not only limitation and above example, specific structure are allowed to vary, and those skilled in the art can make respectively according to the present invention
Kind change and modification, as long as it does not depart from the spirit of the invention, should fall within the scope of the invention as defined by the appended claims.
Claims (6)
1. a kind of area's line loss exception audit system, audit system includes being installed at the outlet switch and branch's electricity box in platform area
Check instrument, it is characterised in that: this checks that instrument includes three-phase CT table (2), fast-assembling wire clamp (3) and open-close type current transformer (4)；Institute
The breaker outgoing line side that fast-assembling wire clamp is mounted at outlet switch and branch's electricity box is stated, collection voltages are used for；The open-close type electricity
Current transformer is mounted on the breaker outgoing line side at outlet switch and branch's electricity box, for acquiring electric current；The three-phase CT table with
Fast-assembling wire clamp and open-close type current transformer are connected by conducting wire, and the three-phase CT table is equipped with the voltage and current letter that will be acquired
Breath is transferred to the GPRS communication module of main station system, and instrument includes meter electricity box (5) for described checking, the three-phase CT table is set to meter
In electricity box, the meter electricity box are equipped with top matter storage lattice and lower part matter storage lattice, and three-phase CT table is fixed in the matter storage lattice of top, described
Fast-assembling wire clamp and open-close type current transformer be individually positioned in two lower part matter storage lattices when not in use, the described lower part storage
Demarcation plate between object lattice and top matter storage lattice is equipped with the wire casing (51) for facilitating conducting wire to pass through, lower part matter storage lattice side wall or bottom wall
Equipped with the through-hole (52) being pierced by for conducting wire.
2. a kind of area line loss exception audit system according to claim 1, it is characterised in that: the meter electricity box back
Equipped with arc-shaped hoop component (53), hoop component includes the fixed plate (531) and movable plate for being fixed on meter electricity box back
(532), the cross section of fixed plate and movable plate is arc-shaped.
3. a kind of area's line loss exception auditing method, it is characterised in that: it is based on audit system of any of claims 1 or 2, it is described
Main station system include for timing or it is artificial receive the GPRS receiving module from GPRS communication module transmission signal,
GPRS receiving module is connected with data analysis module, and the data analysis module is by the voltage received, current information by interior
It sets line loss calculation formula and calculates line loss per unit between public transformer terminals variable and branch, line loss per unit weight less than 0 or when being greater than 8%
Point checks the electricity service condition of the bifurcation；Data analysis module calculates branch's electricity and branch electricity by line loss calculation formula
The line loss measured between lower access point user electricity can confirm that there are problems for the branch when line loss per unit is greater than 8%；Data analyze mould
Root tuber carries out analytical calculation with the access point user of corresponding phase according to branch's split-phase electricity, when the phase line loss per unit is greater than 8%, can lock
There are problems by fixed phase user.
4. a kind of area line loss exception auditing method according to claim 3, it is characterised in that: the public affairs transformer terminals variable
Line loss per unit calculation formula between branch are as follows: line loss per unit=(public transformer terminals electricity-branch's total electricity)/public affairs become total electricity.
5. a kind of area line loss exception auditing method according to claim 3, it is characterised in that: branch's electricity with should
Line loss per unit calculation formula under branch's electricity between access point user electricity are as follows: line loss per unit=(branch's electricity-branch service electricity
Amount)/branch's electricity.
6. a kind of area line loss exception auditing method according to claim 3, it is characterised in that: the data calculate mould
It include line loss formula custom block in block, the data analysis module includes for importing the original use of community user under platform area
The archives data module of electric data.
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| CN106199291A (en) * | 2016-08-26 | 2016-12-07 | 国网江苏省电力公司南京供电公司 | A kind of linear-elsatic buckling and electric energy metrical formula line loss analyzing instrument |
| CN107561387B (en) * | 2017-09-04 | 2024-05-10 | 国网山东省电力公司泰安供电公司 | Distribution network line loss abnormity positioning device |
| CN109507536A (en) * | 2018-12-12 | 2019-03-22 | 国家电网有限公司 | A kind of low-voltage platform area line loss electricity intelligent measure analytical equipment |
| CN109406919A (en) * | 2018-12-29 | 2019-03-01 | 国网山东省电力公司泰安供电公司 | Line loss detection device and line loss detection system |
| CN110649703A (en) * | 2019-08-10 | 2020-01-03 | 国网吉林省电力有限公司长春供电公司 | Digital transformer area line loss situation perception and electricity stealing inspection method |
| CN112130018A (en) * | 2020-09-15 | 2020-12-25 | 国网山东省电力公司高青县供电公司 | Line loss inspection device |
| CN113552399A (en) * | 2021-06-10 | 2021-10-26 | 杭州华春科技有限公司 | Multi-table set line loss phasing device and line loss phasing method |
| CN113552527B (en) * | 2021-06-10 | 2024-03-22 | 杭州华春科技有限公司 | Multi-table set line loss table determining device and line loss table determining method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6360178B1 (en) * | 1997-12-09 | 2002-03-19 | Antony Cozart Parsons | System and method for locating a disturbance in a power system based upon disturbance power and energy |
| CN203224564U (en) * | 2013-03-20 | 2013-10-02 | 国家电网公司 | An electric energy data verifying tool at the power supplying side of a power grid |
| CN204028239U (en) * | 2014-04-15 | 2014-12-17 | 国家电网公司 | A kind of multichannel distribute-electricity transformer district outlet line loss detector |
| CN104280714B (en) * | 2014-10-17 | 2015-12-30 | 国家电网公司 | A kind of measuring apparatus operation exception detection method |
| CN104360225B (en) * | 2014-10-17 | 2017-02-15 | 国家电网公司 | Line loss positioning device and line loss positioning method for low-voltage overhead line |
| CN104483540A (en) * | 2014-12-22 | 2015-04-01 | 江苏创业信息科技有限公司 | Meticulous line loss management equipment for 0.4 KV low-voltage transformer area |
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