CN107202932A - Measuring and calculating is combined power system voltage quality test system and method with remote testing - Google Patents
Measuring and calculating is combined power system voltage quality test system and method with remote testing Download PDFInfo
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- CN107202932A CN107202932A CN201710607692.XA CN201710607692A CN107202932A CN 107202932 A CN107202932 A CN 107202932A CN 201710607692 A CN201710607692 A CN 201710607692A CN 107202932 A CN107202932 A CN 107202932A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention provides a kind of measuring and calculating and is combined power system voltage quality test system and method with remote testing, belongs to quality of voltage detecting system field.It is of the present invention to calculate the method for being combined power system voltage quality test system with remote testing, including database, also include control module, information acquisition module, calculate module and checking module, the line length of collection and cable type information are stored in database by information acquisition module by information acquisition module, control module extracts the information up to each section of cable of user in database, and calculate line resistance by calculating module, control module calculates line drop by line resistance again, control module calculates voltage at line end switch by line drop, control module obtains virtual voltage at mould electric switch by line end electric energy meter, then after being proofreaded by checking module, fed power supplies quality, it can detect whether the supply voltage quality of user is normal.
Description
Technical field
The present invention provides a kind of measuring and calculating and is combined power system voltage quality test system and method with remote testing, category
In quality of voltage detecting system field.
Background technology
Power plant is sent after electric energy, and electric energy is boosted, and the transformer station of urban distribution network is then transported to by transmission line of electricity, so
There is bus to deliver the power in urban distribution network again afterwards, because distribution network scale is big, circuit is long, and framework is complicated, in power transmission mistake
Cheng Zhong, the aging of circuit and the damage of equipment are likely to cause the power quality for being transported to user not good, if stopping
Electric or larger variation in voltage, existing distribution automation system can be discovered and alarm, if but voltage difference is smaller,
Cause quality of voltage not good, then can not be found, and dispose in time.
Because electric energy transmission is all carried out with high voltage, the voltage that we test is voltage transformer secondary side warp
Numerical value after connecting line, due to after voltage transformer, connection line, generating voltage drop in secondary survey, measuring
Numerical value is not real magnitude of voltage, because the error that secondary voltage drops has precision limitation, therefore accurately, quickly, safely
Measure secondary voltage drop, there is presently no good mode.
The content of the invention
Mesh of the present invention is that provide a kind of measuring and calculating is combined power system voltage quality test system and side with remote testing
Method, can detect whether the supply voltage quality of user is normal.
Measuring and calculating of the present invention is combined power system voltage quality test system, including server with remote testing,
Server and power supply dispatching system are set up communication and be connecteds, by the metering device of power supply dispatching system and power network switchyards at different levels with
And the electric energy meter of user sets up communication connection, server is set up with mobile terminal by internet and mobile network and is connected.
It is of the present invention to calculate the method for being combined power system voltage quality test system with remote testing, including number
According to storehouse, in addition to control module, information acquisition module, measuring and calculating module and checking module, information acquisition module is by the circuit of collection
Length and cable type information are stored in database by information acquisition module, and control module is extracted in database up to user's
The information of each section of cable, and line resistance is calculated by calculating module, control module calculates line drop by line resistance again,
Control module calculates voltage at line end switch by line drop, and control module obtains mould electricity by line end electric energy meter
Virtual voltage at switch, after then being proofreaded by checking module, fed power supplies quality.
Described measuring and calculating is combined power system voltage quality detecting method, database, control module, survey with remote testing
Calculate module and checking module is integrated in server, server is connected to power supply dispatching system, while server can obtain power supply
Data are dispatched, server is connected to internet, and server is connected with mobile terminal, information gathering by internet and mobile network
Module is located in mobile terminal, and line arrangement personnel by information acquisition module record circuit length, and are led in wiring process
Cross mobile network and internet transfers data to server and stored in database.
Described measuring and calculating is combined power system voltage quality detecting method with remote testing, and server passes through power supply dispatching
System obtains the electric current of metering, voltage data with the metering device per one-level switchyard.
Described measuring and calculating is combined power system voltage quality detecting method with remote testing, and line arrangement personnel are by every two
The sectional area and length of circuit between individual switchyard carry out correspondence label, and record in the server.
Described measuring and calculating is combined power system voltage quality detecting method with remote testing, and control module is by calculating mould
Block enters to the sectional area and length of the electric current of the metering device of the switchyard of each section of line end and each section of circuit to line loss
Row is calculated, then calculate line loss add and, busbar voltage is subtracted into line loss add and pressed afterwards with the electrical energy meter electricity of user and contrasted.
The present invention has the beneficial effect that compared with prior art：
Measuring and calculating of the present invention is combined power system voltage quality test system and method with remote testing, passes through work
The length and cross-sectional dimension of the cable used are measured when making personnel to line arrangement and is recorded, then according to switchyards at different levels
The current data of metering device measurement measures the voltage line loss of each section of cable, then calculates total voltage that bus reaches user
Line loss.Total line loss is subtracted using busbar voltage and obtains the actual supply voltage of user, and then contrast module is actual by user
User's voltage that supply voltage feeds back with electric energy meter is contrasted, and proves that the power quality of user is not good if difference is more than 10V,
From server to power supply dispatching system feedback, and arranged to realize problem in time and handled by power supply unit responsible person, it is to avoid hair
Raw further damage.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
In figure：1st, mobile terminal；2nd, metering device；3rd, power supply dispatching system；4th, server.
Embodiment
Power system voltage quality test system is combined with reference to the present invention with remote testing to measuring and calculating to do further
Explanation：
Measuring and calculating of the present invention is combined power system voltage quality test system, including server 4 with remote testing,
Server 4 is set up communication with power supply dispatching system 3 and is connected, and is filled by the metering of power supply dispatching system 3 and power network switchyards at different levels
The electric energy meter foundation communication connection of 2 and user are put, server 4 sets up company by internet and mobile network with mobile terminal 1
Connect.
Power system voltage quality detecting method is combined with reference to the present invention with remote testing to measuring and calculating to do further
Explanation：
Measuring and calculating of the present invention is combined power system voltage quality detecting method, including database with remote testing,
Also include control module, information acquisition module, measuring and calculating module and checking module, information acquisition module by the line length of collection and
Cable type information is stored in database by information acquisition module, and control module extracts each section of line up to user in database
The information of cable, and line resistance is calculated by calculating module, control module calculates line drop by line resistance again, controls mould
Block calculates voltage at line end switch by line drop, and control module is obtained at mould electric switch by line end electric energy meter
Virtual voltage, after then being proofreaded by checking module, fed power supplies quality.
Described measuring and calculating is combined power system voltage quality detecting method, database, control module, survey with remote testing
Calculate module and checking module is integrated in server 4, server 4 is connected to power supply dispatching system 3, while server 4 can be obtained
Power supply dispatching data, server 4 is connected to internet, and server 4 is connected with mobile terminal 1 by internet and mobile network,
Information acquisition module is located in mobile terminal 1, and line arrangement personnel pass through information acquisition module record circuit in wiring process
Length, and server 4 is transferred data to by mobile network and internet stored in database.
Described measuring and calculating is combined power system voltage quality detecting method with remote testing, and server 4 is adjusted by powering
Degree system 3 obtains the electric current of metering, voltage data with the metering device 2 per one-level switchyard.
Described measuring and calculating is combined power system voltage quality detecting method with remote testing, and line arrangement personnel are by every two
The sectional area and length of circuit between individual switchyard carry out correspondence label, and record in server 4.
Described measuring and calculating is combined power system voltage quality detecting method with remote testing, and control module is by calculating mould
Block enters to the sectional area and length of the electric current of the metering device 2 of the switchyard of each section of line end and each section of circuit to line loss
Row is calculated, then calculate line loss add and, by busbar voltage subtract line loss add and after obtain the theoretical value of user's supply voltage, user
The theoretical value of supply voltage and the electrical energy meter electricity pressure of user are contrasted, to power supply dispatching management system if difference is more than 10V
Alarm.
By taking circuit of the bus to first order switchyard as an example, line length is L1, and sectional area is S1, then resistance R1 is R1=
ρ L1/S1, first integrates line current that switchyard measures as I1, then this section of circuit line loss
Total line loss Δ U=U1+U2+......+Un；The theoretical value Ur=busbar voltage U- Δ U of user's supply voltage, and
The voltage data that electric energy meter is measured is Uc, and contrast module is contrasted using Ur with Uc, if difference is managed more than 10V to power supply
Manage system alarm.
Claims (6)
1. one kind measuring and calculating is combined power system voltage quality test system with remote testing, it is characterised in that including server,
Server and power supply dispatching system are set up communication and be connecteds, by the metering device of power supply dispatching system and power network switchyards at different levels with
And the electric energy meter of user sets up communication connection, server is set up with mobile terminal by internet and mobile network and is connected.
2. a kind of measuring and calculating applied to described in claim 1 is combined power system voltage quality test system with remote testing
Method, including database, it is characterised in that also including control module, information acquisition module, measuring and calculating module and checking module, letter
Cease acquisition module and the line length of collection and cable type information are stored in database by information acquisition module, control module exists
The information up to each section of cable of user is extracted in database, and line resistance is calculated by calculating module, control module is led to again
Cross line resistance and calculate line drop, control module calculates voltage at line end switch by line drop, and control module is led to
Cross line end electric energy meter and obtain virtual voltage at mould electric switch, after then being proofreaded by checking module, fed power supplies quality.
3. measuring and calculating according to claim 2 is combined power system voltage quality detecting method with remote testing, its feature
It is, database, control module, measuring and calculating module and checking module are integrated in server, and server is connected to power supply dispatching system
System, while server can obtain power supply dispatching data, server is connected to internet, and server passes through internet and mobile network
Mobile terminal is connected with, information acquisition module is located in mobile terminal, and line arrangement personnel are adopted in wiring process by information
Collect module record circuit length, and server is transferred data to by mobile network and internet and stored up in database
Deposit.
4. measuring and calculating according to claim 3 is combined power system voltage quality detecting method with remote testing, its feature
It is, server obtains the electric current of metering, voltage data by power supply dispatching system with the metering device per one-level switchyard.
5. measuring and calculating according to claim 4 is combined power system voltage quality detecting method with remote testing, its feature
It is, the sectional area of the circuit between each two switchyard and length are carried out correspondence label by line arrangement personnel, and are recorded
In the server.
6. measuring and calculating according to claim 5 is combined power system voltage quality detecting method with remote testing, its feature
It is, control module is by calculating electric current and each section circuit of the module to the metering device of the switchyard of each section of line end
Sectional area and length line loss is calculated, then calculate line loss add and, busbar voltage is subtracted into line loss and added and afterwards and user
Electrical energy meter electricity pressure contrasted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607692.XA CN107202932A (en) | 2017-07-24 | 2017-07-24 | Measuring and calculating is combined power system voltage quality test system and method with remote testing |
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|---|---|---|---|
| CN201710607692.XA CN107202932A (en) | 2017-07-24 | 2017-07-24 | Measuring and calculating is combined power system voltage quality test system and method with remote testing |
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| CN107202932A true CN107202932A (en) | 2017-09-26 |
Family
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| CN201710607692.XA Pending CN107202932A (en) | 2017-07-24 | 2017-07-24 | Measuring and calculating is combined power system voltage quality test system and method with remote testing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342801A (en) * | 2018-11-21 | 2019-02-15 | 江西洪都航空工业集团有限责任公司 | Direct current supply line apparatus for testing pressure drop |
| CN109444787A (en) * | 2018-12-21 | 2019-03-08 | 云南电网有限责任公司电力科学研究院 | A kind of method and apparatus that DTU/FTU measurement voltage value accuracy remotely judges |
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| CN206892229U (en) * | 2017-07-24 | 2018-01-16 | 国网山东省电力公司桓台县供电公司 | Measuring and calculating is combined power system voltage quality test system with remote testing |
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Patent Citations (7)
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| CN101714234A (en) * | 2009-10-23 | 2010-05-26 | 西北电网有限公司 | Grid line loss monitoring and analyzing system |
| CN102545213A (en) * | 2012-01-11 | 2012-07-04 | 藁城市供电公司 | System and method for managing line loss of power grid in real time |
| CN103177341A (en) * | 2013-03-29 | 2013-06-26 | 山东电力集团公司 | Line loss lean comprehensive management system and method |
| CN104424603A (en) * | 2013-08-30 | 2015-03-18 | 国际商业机器公司 | Method and device for metering power consumption in power distribution network |
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| CN206892229U (en) * | 2017-07-24 | 2018-01-16 | 国网山东省电力公司桓台县供电公司 | Measuring and calculating is combined power system voltage quality test system with remote testing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342801A (en) * | 2018-11-21 | 2019-02-15 | 江西洪都航空工业集团有限责任公司 | Direct current supply line apparatus for testing pressure drop |
| CN109444787A (en) * | 2018-12-21 | 2019-03-08 | 云南电网有限责任公司电力科学研究院 | A kind of method and apparatus that DTU/FTU measurement voltage value accuracy remotely judges |
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