CN109541361A - Device and method for early warning heavy load of branch load on low voltage side of bus - Google Patents
Device and method for early warning heavy load of branch load on low voltage side of bus Download PDFInfo
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- 238000004364 calculation method Methods 0.000 claims description 5
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- 229910000889 permalloy Inorganic materials 0.000 claims description 4
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention provides a public low-voltage side branch load heavy-load early warning device and a public low-voltage side branch load heavy-load early warning method, wherein the public low-voltage side branch load heavy-load early warning device comprises a main control module and a plurality of branch modules, the main control module is used for collecting line information of a main line and polling and reading line information of each branch line, the branch modules are used for respectively collecting line information of each branch line, and the main control module and the branch modules respectively comprise: the puncture current transformer is used for collecting line current and voltage signals; the sampling unit is used for acquiring real-time voltage, current and high-frequency current sampling data of a line; and the main control unit controls the sampling unit to sample, calculates the line power according to the sampling data, calculates the current increment when the current suddenly changes, judges whether the current increment and the line power exceed a set threshold value, and sends alarm information through the communication unit if the current increment and the line power exceed the set threshold value. The invention realizes the acquisition of line voltage, current and high-frequency components thereof and reliably provides the overload early warning information.
Description
Technical field
The present invention relates to technical field of power systems more particularly to a kind of public low pressure side branch load heavy duty prior-warning devices
And method.
Background technique
Public low pressure side electric network composition is complicated, load variation is big, Frequent Troubles, and severe jamming normal power supply causes
Biggish economic loss.Recently the acquisition equipment being installed on route more can reliably acquire the effective of route load current
Value forms load curve by specified time interval, the Annual distribution of load is obtained by the analysis to curve.This mode is straight
It sees, is reliable, for specific heavy-haul line, this mode based on virtual value judgement is difficult to determine the specific of load current mutation
It is moment, relatively difficult to achieve to the monitoring of the change rate of electric current.Additionally due to the increase instantaneous value of load current is mutual often beyond measurement
The effective range of sensor, causes the acquisition inaccuracy of high current, so that it is unable to the actual current at effecting reaction heavily loaded moment,
It causes to perplex to the analysis of subsequent data.
Summary of the invention
Technical problem to be solved by the present invention lies in, provide a kind of public low pressure side branch's load heavy duty prior-warning device and
Method provides reliable data supporting and again to realize the real-time monitoring and early warning of load for the safe operation of low-pressure side power grid
Carry early warning.
In order to solve the above technical problem, the present invention provides a kind of public low pressure side branch load heavy duty prior-warning device, packets
Main control module and multiple branch modules are included, the main control module is used to acquire the line information of main line and poll reads each branch
The line information of route, the branch module are used to acquire the line information of each branched line, the main control module and institute respectively
Stating branch module includes:
Current transformer is punctured, for acquiring line current, voltage signal；
Sampling unit, for obtaining route real-time voltage, electric current, high-frequency current sampled data；
Main control unit controls the sampling unit and is sampled, and calculates line power according to sampled data, and in electric current
Calculating current increment when mutation judges whether current increment and line power are more than given threshold, if then passing through communication
Unit alert.
Wherein, the puncture current transformer is retractable structure, and core material is high permeability permalloy, secondary line
The number of turns 2800T is enclosed, initial relative permeability is not less than 6000 after installation.
Wherein, the puncture current transformer side is equipped with puncture screw, is led for puncturing wire insulation with connection
Core line, the puncture screw are composite structure, and top is threaded rod, and the lower end of the threaded rod is fixed with stainless steel point
Needle.
Wherein, the sampling unit include voltage sampling circuit, current sampling circuit, second order Sallen-Key filter and
AD sampling A/D chip, the voltage sampling circuit, current sampling circuit, second order Sallen-Key filter output signal be input to
The AD sampling A/D chip.
Wherein, the voltage sampling circuit is specially the high-accuracy resitstance voltage divider that intrinsic standoff ratio is 2000, and the electric current is adopted
Sample circuit includes current-to-voltage convertor and difference amplifier, and the output signal of the difference amplifier is input to the second order
Sallen-Key filter.
Wherein, first resistor, second resistance are connected to the positive input of the difference amplifier, and 3rd resistor is connected to
The reverse input end of the difference amplifier, the 4th resistance be connected to the difference amplifier reverse input end and output end it
Between.
Wherein, the second order Sallen-Key filter includes the first operational amplifier and second operational amplifier and corresponding
Resistance, capacitor, wherein the 6th resistance is connected to the positive input of first operational amplifier, eleventh resistor connection
Between the reverse input end and output end of first operational amplifier, first operational amplifier and the 6th electricity
Resistance, eleventh resistor collectively as the second order Sallen-Key filter buffer input stage；First capacitor, the second capacitor and
7th resistance is connected to the positive input of the second operational amplifier after being sequentially connected in series, one end of the 5th resistance is connected to institute
The output end of second operational amplifier is stated, the other end is connected between the first capacitor and second capacitor, the 9th resistance
One end ground connection, the other end is connected between the first capacitor and second capacitor, one end ground connection of the tenth resistance, another
End is connected between the 7th resistance and second capacitor, and twelfth resistor is connected to the anti-of the second operational amplifier
To between input terminal and output end, one end of thirteenth resistor is grounded, and the other end is connected to the anti-of the second operational amplifier
To input terminal, the 8th resistance is connected to the output end of the second operational amplifier.
Wherein, the output signal of the difference amplifier inputs the same of first operational amplifier through the 6th resistance
To input terminal, the output signal of the second operational amplifier is exported to the AD sampling A/D chip.
Wherein, the main control module further includes power module, and the power module further comprises AC/DC controller, electricity
Pond charge-discharge circuit and battery, the AC/DC controller is converted into 12V DC power supply for the line power obtained is punctured, then passes through
Working power of the reduced output voltage 3.3V as the main control unit and its peripheral hardware, management of charging and discharging circuit is in the main control unit
It charges under control to backup battery.
Wherein, the branch module further includes DC/DC conversion module, for converting the 12V power supply of the main control module
At the working power of the branch module itself, while playing the role of security isolation.
The present invention also provides a kind of public low pressure side branch load heavy duty method for early warning, comprising:
Step S1, starting sampling, obtains route real-time voltage, electric current, high-frequency current sampled data；
Step S2 is calculated electric current high fdrequency component according to high-frequency current sampled data, is exported according to voltage sampling circuit
Signal and current sampling circuit output signal calculate line power；
Step S3 judges that electric current high fdrequency component whether more than the first given threshold, determines that electric current mutates if being more than,
And further calculating current increment；
Step S4, judge respectively calculated current increment whether more than the second given threshold, line power whether be more than
Third sets threshold values, then alert when any one is more than setting threshold values when current increment and line power.
Wherein, the calculation of the current increment is: according to the perdurabgility t of mutation, through electric current I to the product of time t
Divide and calculates current increment Δ Qt=∫ Idt.
The beneficial effect of the embodiment of the present invention is: realizing the real-time acquisition of line voltage distribution, electric current, the reality of line load
When calculate, the acquisition of high fdrequency component in current signal reliably provides load heavy duty warning information.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of configuration diagram of public low pressure side branch load heavy duty prior-warning device of the embodiment of the present invention one.
Fig. 2 is the structural schematic diagram of main control module and branch module in the embodiment of the present invention one.
Fig. 3 is the structural schematic diagram that screw is punctured in the embodiment of the present invention one.
Fig. 4 is the structural schematic diagram of current sampling circuit and second order Sallen-Key filter in the embodiment of the present invention one.
Fig. 5 is a kind of flow diagram of public low pressure side branch load heavy duty method for early warning of the embodiment of the present invention two.
Specific embodiment
The explanation of following embodiment be with reference to attached drawing, can be to the specific embodiment implemented to the example present invention.
Referring to shown in Fig. 1, Fig. 2, it is pre- that the embodiment of the present invention one provides a kind of public low pressure side branch load heavy duty
Alarm device, including main control module 1 and multiple branch modules 2, the main control module 1 are used to acquire the line information and wheel of main line
The line information for reading each branched line is ask, the branch module 2 is used to acquire the line information of each branched line respectively, described
Main control module 1 and the branch module 2 include:
Current transformer 3 is punctured, for acquiring line current, voltage signal；
Sampling unit 4, for obtaining route real-time voltage, electric current, high-frequency current sampled data；
Main control unit 5 controls the sampling unit 4 and is sampled, and calculates line power according to sampled data, and in electricity
Calculating current increment when stream mutates, judges whether current increment and line power are more than given threshold, if then by logical
Believe 6 alert of unit.
Specifically, the puncture current transformer 3 in the present embodiment is retractable structure, and core material is high permeability perm
Alloy exports electric current 285.71mA, the permalloy cutting of high permeability when secondary coil the number of turns 2800T, line current 800A
After take its end face of attrition process, initial relative permeability is not less than 6000 after installing it, it is ensured that punctures current transformer and exists
Precision when low current is not less than 0.5%.3 side of puncture current transformer is equipped with puncture screw, exhausted for puncturing conducting wire
Edge layer is with connection conducting wire core wire.As shown in figure 3, puncturing screw 30 is composite structure, top is copper threaded rod 31, outer diameter
8mm, tooth are fixed with stainless steel prong 32 away from the lower end for 1mm, threaded rod 31.Puncture 3 output voltage of current transformer, current-mode
Quasi- signal, voltage value are the phase voltage of route, and electric current is the 2800:1 (puncturing the no-load voltage ratio of current transformer) of line current.
Sampling unit 4 includes that voltage sampling circuit, current sampling circuit, second order Sallen-Key filter and AD sample core
Piece.Voltage sampling circuit is specially the high-accuracy resitstance voltage divider that intrinsic standoff ratio is 2000.Current sampling circuit includes Current Voltage
Converter and difference amplifier.The sampling resistor of current-to-voltage convertor is 1 ohm, and the amplification factor of difference amplifier is 2, is asked
It refers again to shown in Fig. 4, the forward direction that difference amplifier U1 model OPA349, first resistor R1, second resistance R2 are connected to U1 is defeated
Enter end, 3rd resistor R3 is connected to the reverse input end of U1, the 4th resistance R4 be connected to U1 reverse input end and output end it
Between.Second order Sallen-Key filter includes the first operational amplifier U2 and second operational amplifier U3 and corresponding resistance, electricity
Hold, wherein the 6th resistance R6 is connected to the positive input of U2, eleventh resistor R11 be connected to the reverse input end of U2 with it is defeated
Between outlet, the buffer input stage of U2 and R6, R11 collectively as second order Sallen-Key filter；First capacitor C1, the second electricity
Hold the positive input that U3 is connected to after C2 and the 7th resistance R7 is sequentially connected in series, one end of the 5th resistance R5 is connected to the output of U3
End, the other end is connected between first capacitor C1 and the second capacitor C2, one end ground connection of the 9th resistance R9, and the other end is connected to the
Between one capacitor C1 and the second capacitor C2, one end of the tenth resistance R10 is grounded, and the other end is connected to the electricity of the 7th resistance R7 and second
Hold between C2, twelfth resistor R12 is connected between the reverse input end of U3 and output end, a termination of thirteenth resistor R13
Ground, the other end are connected to the reverse input end of U3, and the 8th resistance R8 is connected to the output end of U3, and the model of U2, U3 are
OPA349.The gain of second order Sallen-Key filter are as follows: (1+R12/R13).The output signal AD_I of U1 is through the 6th resistance
R6 inputs the noninverting input of U2, and the output signal AD I_Sa of U3 is exported to AD sampling A/D chip.AD sampling A/D chip and main control unit
The communication interface of MCU is SPI, and control signal includes: sampling trigger pulse, and terminal signaling is completed in sampling.
The workflow and principle of public affairs low pressure side of embodiment of the present invention branch load heavy duty prior-warning device are as follows:
Firstly, power-up initializing；
Then main control unit 5 starts the sampling of AD sampling A/D chip, reads voltage sampling circuit output signal, current sample respectively
Circuit output signal, second order Sallen-Key filter output signal, since second order Sallen-Key filter output signal is
High fdrequency component in electric current, therefore can be calculated electric current high fdrequency component through virtual value, to judge whether electric current is sent out for subsequent
Raw mutation；The calculation of electric current high fdrequency component virtual value is:
Wherein, imFor sampled value, m is sampling sequence number, and N is sampling sum；
Main control unit 5 calculates line power according to voltage sampling circuit output signal and current sampling circuit output signal；
Main control unit 5 judges that electric current high fdrequency component whether more than the first given threshold, determines that electric current occurs to dash forward if being more than
Become, and further calculating current increment；The calculation of current increment is: according to the perdurabgility t of mutation, through electric current I clock synchronization
Between t integrating meter calculate current increment Δ Qt=∫ Idt；
Main control unit 5 judges whether calculated current increment surpass more than the second given threshold, line power respectively
Third setting threshold values is crossed, then alert when any one is more than setting threshold values when current increment and line power.
It should be noted that as previously mentioned, main control module 1 and branch module 2, which all have, punctures current transformer 3, sampling
Unit 4, main control unit 5, therefore main control module 1 can determine whether the electric current of the main line where it mutates, current increment
It whether is more than third setting threshold values more than the second given threshold, line power, branch module 2 similarly can determine whether where it
Whether the electric current of branched line mutates, whether current increment be more than third more than the second given threshold, line power
Set threshold values.Main control module 1 and a difference of branch module 2 are that 1 poll of main control module reads the route of each branched line
The backward main website alarm of information (such as warning message), the communication unit 6 of branch module 2 is specially 485 interface of High-Speed RS.Master control mould
Block 1 and branch module 2 another difference is that, main control module 1 has a power module, power module include AC/DC controller,
Battery charge-discharge circuit and battery, AC/DC controller are converted into 12V DC power supply for the line power obtained is punctured, then through dropping
Working power of the pressure output 3.3V as main control unit 5 and its peripheral hardware, management of charging and discharging circuit are given under the control of main control unit 5
Backup battery charging, when external power supply power down, backup battery is connected automatically, it is ensured that the timely preservation of data and event report；
And branch module 2 then has DC/DC conversion module, for the 12V power supply of main control module 1 to be converted into branch module 2 itself
Working power, while playing the role of security isolation.
Corresponding to the embodiment of the present invention one, as shown in figure 5, the embodiment of the present invention two also provides a kind of public low pressure side branch
Load heavy duty method for early warning, comprising:
Step S1, starting sampling, obtains route real-time voltage, electric current, high-frequency current sampled data；
Step S2 is calculated electric current high fdrequency component according to high-frequency current sampled data, is exported according to voltage sampling circuit
Signal and current sampling circuit output signal calculate line power；
Step S3 judges that electric current high fdrequency component whether more than the first given threshold, determines that electric current mutates if being more than,
And further calculating current increment；
Step S4, judge respectively calculated current increment whether more than the second given threshold, line power whether be more than
Third sets threshold values, then alert when any one is more than setting threshold values when current increment and line power.
Wherein, the calculation of the current increment is: according to the perdurabgility t of mutation, through electric current I to the product of time t
Divide and calculates current increment Δ Qt=∫ Idt.
By above description it is found that the beneficial effect of the embodiment of the present invention is, realize line voltage distribution, electric current it is real-time
It acquires, the real-time calculating of line load, the high fdrequency component acquisition in current signal reliably provides load heavy duty warning information.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (12)
1. a kind of public affairs low pressure side branch load heavy duty prior-warning device, which is characterized in that including main control module and multiple branch's moulds
Block, the main control module is used to acquire the line information of main line and poll reads the line information of each branched line, and described point
Formwork is used to acquire the line information of each branched line respectively, and the main control module and the branch module include:
Current transformer is punctured, for acquiring line current, voltage signal；
Sampling unit, for obtaining route real-time voltage, electric current, high-frequency current sampled data；
Main control unit controls the sampling unit and is sampled, and calculates line power according to sampled data, and occur in electric current
Calculating current increment when mutation judges whether current increment and line power are more than given threshold, if then passing through communication unit
Alert.
2. public affairs low pressure side branch according to claim 1 load heavy duty prior-warning device, which is characterized in that the puncture electricity
Current transformer is retractable structure, and core material is high permeability permalloy, and secondary coil the number of turns 2800T is initial after installation
Relative permeability is not less than 6000.
3. public affairs low pressure side branch according to claim 1 load heavy duty prior-warning device, which is characterized in that the puncture electricity
Current transformer side is equipped with puncture screw, and for puncturing wire insulation with connection conducting wire core wire, the puncture screw is multiple
Box-like structure, top are threaded rod, and the lower end of the threaded rod is fixed with stainless steel prong.
4. public affairs low pressure side branch according to claim 1 load heavy duty prior-warning device, which is characterized in that the sampling is single
Member includes voltage sampling circuit, current sampling circuit, second order Sallen-Key filter and AD sampling A/D chip, the voltage sample
Circuit, current sampling circuit, second order Sallen-Key filter output signal be input to the AD sampling A/D chip.
5. public affairs low pressure side branch according to claim 4 load heavy duty prior-warning device, which is characterized in that the voltage is adopted
Sample circuit is specially the high-accuracy resitstance voltage divider that intrinsic standoff ratio is 2000, and the current sampling circuit includes current-to-voltage convertor
And difference amplifier, the output signal of the difference amplifier are input to the second order Sallen-Key filter.
6. public affairs low pressure side branch according to claim 5 load heavy duty prior-warning device, which is characterized in that first resistor,
Second resistance is connected to the positive input of the difference amplifier, and 3rd resistor is connected to the reversed defeated of the difference amplifier
Enter end, the 4th resistance is connected between the reverse input end and output end of the difference amplifier.
7. public affairs low pressure side branch according to claim 6 load heavy duty prior-warning device, which is characterized in that the second order
Sallen-Key filter includes the first operational amplifier and second operational amplifier and corresponding resistance, capacitor, wherein the 6th
Resistance is connected to the positive input of first operational amplifier, and eleventh resistor is connected to first operational amplifier
Between reverse input end and output end, first operational amplifier and the 6th resistance, eleventh resistor are collectively as institute
State the buffer input stage of second order Sallen-Key filter；First capacitor, the second capacitor and the 7th resistance connect after being sequentially connected in series
The output of the second operational amplifier is connected in one end of the positive input of the second operational amplifier, the 5th resistance
End, the other end are connected between the first capacitor and second capacitor, and one end ground connection of the 9th resistance, the other end is connected to
Between the first capacitor and second capacitor, one end of the tenth resistance is grounded, the other end be connected to the 7th resistance and
Between second capacitor, twelfth resistor is connected between the reverse input end and output end of the second operational amplifier,
One end of thirteenth resistor is grounded, and the other end is connected to the reverse input end of the second operational amplifier, the connection of the 8th resistance
In the output end of the second operational amplifier.
8. public affairs low pressure side branch according to claim 7 load heavy duty prior-warning device, which is characterized in that the difference is put
The output signal of big device inputs the noninverting input of first operational amplifier through the 6th resistance, and second operation is put
The output signal of big device is exported to the AD sampling A/D chip.
9. public affairs low pressure side branch according to claim 1 load heavy duty prior-warning device, which is characterized in that the master control mould
Block further includes power module, and the power module further comprises AC/DC controller, battery charge-discharge circuit and battery, described
AC/DC controller is converted into 12V DC power supply for the line power obtained is punctured, then through reduced output voltage 3.3V as the master control
The working power of unit and its peripheral hardware, management of charging and discharging circuit charge under the control of the main control unit to backup battery.
10. public affairs low pressure side branch according to claim 9 load heavy duty prior-warning device, which is characterized in that the branch
Module further includes DC/DC conversion module, and the work of described branch module itself is converted into for the 12V power supply by the main control module
Make power supply, while playing the role of security isolation.
11. a kind of public affairs low pressure side branch load heavy duty method for early warning characterized by comprising
Step S1, starting sampling, obtains route real-time voltage, electric current, high-frequency current sampled data；
Electric current high fdrequency component is calculated according to high-frequency current sampled data, according to voltage sampling circuit output signal in step S2
Line power is calculated with current sampling circuit output signal；
Step S3 judges that electric current high fdrequency component whether more than the first given threshold, determines that electric current mutates if being more than, goes forward side by side
One step calculating current increment；
Step S4 judges whether calculated current increment be more than third more than the second given threshold, line power respectively
Threshold values is set, then alert when any one is more than setting threshold values when current increment and line power.
12. public affairs low pressure side branch according to claim 11 load heavy duty method for early warning, which is characterized in that the electric current
The calculation of increment is: according to the perdurabgility t of mutation, calculating current increment Qt=∫ through integrating meter of the electric current I to time t
Idt。
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| CN201811621554.8A CN109541361B (en) | 2018-12-28 | 2018-12-28 | Public transformer low-voltage side branch load heavy-load early warning device and method |
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| CN201811621554.8A CN109541361B (en) | 2018-12-28 | 2018-12-28 | Public transformer low-voltage side branch load heavy-load early warning device and method |
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| CN109541361B CN109541361B (en) | 2024-07-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213553A (en) * | 2020-10-29 | 2021-01-12 | 国网河北省电力有限公司 | Device for measuring current |
| CN113049865A (en) * | 2019-12-26 | 2021-06-29 | 深圳市凯弦欣能科技有限公司 | Power parameter detection device and method |
| CN113973237A (en) * | 2021-11-02 | 2022-01-25 | 国网湖北综合能源服务有限公司 | Non-embedded Internet of things sensing terminal and application method thereof |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU805457A1 (en) * | 1978-07-17 | 1981-02-15 | Московский Институт Инженеров Селькохо-Зяйственного Производства Им. B.П.Горячкина | Device for current protection of power transmission line of up to 1000v with automatic reconnection |
| US6330516B1 (en) * | 2000-03-27 | 2001-12-11 | Power Distribution, Inc. | Branch circuit monitor |
| CN201184901Y (en) * | 2008-04-22 | 2009-01-21 | 深圳浩宁达仪表股份有限公司 | Transmission line measuring apparatus with tekecommunication and anti-theft electricity function |
| CN203178406U (en) * | 2013-03-28 | 2013-09-04 | 国家电网公司 | Mobile monitoring system of area branch line |
| CN103337904A (en) * | 2013-04-24 | 2013-10-02 | 南京南瑞集团公司 | Emergency control method for power grid voltage out-of-limit and equipment overload based on multi-source data |
| CN103364684A (en) * | 2013-07-12 | 2013-10-23 | 桐乡市供电局 | Fault line selection method based on wavelet analysis |
| CN103439606A (en) * | 2013-08-28 | 2013-12-11 | 徐州润泽电气有限公司 | Portable low-voltage multi-path outgoing cable three-phase load collecting recorder |
| RU2012155084A (en) * | 2010-06-07 | 2014-07-20 | Эмпконтрол Пти Лтд. | METHOD FOR DETECTING LEAKAGE OR DAMAGE CURRENTS FROM EQUIPMENT IN ELECTRICAL SYSTEM |
| CN104615038A (en) * | 2014-12-23 | 2015-05-13 | 陈宇飞 | Intelligent load pre-warning measurement and control management device and monitoring method thereof |
| CN105140892A (en) * | 2015-07-21 | 2015-12-09 | 河南行知专利服务有限公司 | Line protection method for power transmission line |
| CN105486980A (en) * | 2015-12-24 | 2016-04-13 | 万进 | Power transmission line energy saving safety operation system |
| CN105787815A (en) * | 2016-03-22 | 2016-07-20 | 广州供电局有限公司 | Method and system for screening N-2 fault |
| US9453869B1 (en) * | 2012-08-08 | 2016-09-27 | Perry Parkin | Fault prediction system for electrical distribution systems and monitored loads |
| CN107290630A (en) * | 2017-07-25 | 2017-10-24 | 浙江爱德电子有限公司 | Detector for electric fire protection circuit |
| CN108281267A (en) * | 2018-03-23 | 2018-07-13 | 江阴市星火电子科技有限公司 | A kind of water proof type punctures electricity-getting mutual inductor and its assembly technology |
| JP2018160990A (en) * | 2017-03-23 | 2018-10-11 | 東京電力ホールディングス株式会社 | Load management apparatus and method |
| CN108919054A (en) * | 2018-07-05 | 2018-11-30 | 国网上海市电力公司 | The intelligent power distribution network short circuit fault localization method estimated based on load and branch line |
| CN209640428U (en) * | 2018-12-28 | 2019-11-15 | 深圳供电局有限公司 | Public low-voltage side branch load heavy load early warning device |
-
2018
- 2018-12-28 CN CN201811621554.8A patent/CN109541361B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU805457A1 (en) * | 1978-07-17 | 1981-02-15 | Московский Институт Инженеров Селькохо-Зяйственного Производства Им. B.П.Горячкина | Device for current protection of power transmission line of up to 1000v with automatic reconnection |
| US6330516B1 (en) * | 2000-03-27 | 2001-12-11 | Power Distribution, Inc. | Branch circuit monitor |
| CN201184901Y (en) * | 2008-04-22 | 2009-01-21 | 深圳浩宁达仪表股份有限公司 | Transmission line measuring apparatus with tekecommunication and anti-theft electricity function |
| RU2012155084A (en) * | 2010-06-07 | 2014-07-20 | Эмпконтрол Пти Лтд. | METHOD FOR DETECTING LEAKAGE OR DAMAGE CURRENTS FROM EQUIPMENT IN ELECTRICAL SYSTEM |
| US9453869B1 (en) * | 2012-08-08 | 2016-09-27 | Perry Parkin | Fault prediction system for electrical distribution systems and monitored loads |
| CN203178406U (en) * | 2013-03-28 | 2013-09-04 | 国家电网公司 | Mobile monitoring system of area branch line |
| CN103337904A (en) * | 2013-04-24 | 2013-10-02 | 南京南瑞集团公司 | Emergency control method for power grid voltage out-of-limit and equipment overload based on multi-source data |
| CN103364684A (en) * | 2013-07-12 | 2013-10-23 | 桐乡市供电局 | Fault line selection method based on wavelet analysis |
| CN103439606A (en) * | 2013-08-28 | 2013-12-11 | 徐州润泽电气有限公司 | Portable low-voltage multi-path outgoing cable three-phase load collecting recorder |
| CN104615038A (en) * | 2014-12-23 | 2015-05-13 | 陈宇飞 | Intelligent load pre-warning measurement and control management device and monitoring method thereof |
| CN105140892A (en) * | 2015-07-21 | 2015-12-09 | 河南行知专利服务有限公司 | Line protection method for power transmission line |
| CN105486980A (en) * | 2015-12-24 | 2016-04-13 | 万进 | Power transmission line energy saving safety operation system |
| CN105787815A (en) * | 2016-03-22 | 2016-07-20 | 广州供电局有限公司 | Method and system for screening N-2 fault |
| JP2018160990A (en) * | 2017-03-23 | 2018-10-11 | 東京電力ホールディングス株式会社 | Load management apparatus and method |
| CN107290630A (en) * | 2017-07-25 | 2017-10-24 | 浙江爱德电子有限公司 | Detector for electric fire protection circuit |
| CN108281267A (en) * | 2018-03-23 | 2018-07-13 | 江阴市星火电子科技有限公司 | A kind of water proof type punctures electricity-getting mutual inductor and its assembly technology |
| CN108919054A (en) * | 2018-07-05 | 2018-11-30 | 国网上海市电力公司 | The intelligent power distribution network short circuit fault localization method estimated based on load and branch line |
| CN209640428U (en) * | 2018-12-28 | 2019-11-15 | 深圳供电局有限公司 | Public low-voltage side branch load heavy load early warning device |
Non-Patent Citations (5)
| Title |
|---|
| 万官泉 等: "基于电流安全裕度状态空间截断的可靠性算法", 电力系统自动化, vol. 32, no. 5, 10 March 2008 (2008-03-10), pages 34 - 37 * |
| 乔跃忠 等: "谐振接地电网自适应突变量选线方法研究", 华东电力, vol. 41, no. 10, 24 October 2013 (2013-10-24), pages 2115 - 2118 * |
| 李再华 等: "WGL-3大型发变组微机故障录波及监视分析系统", 电力自动化设备, vol. 26, no. 10, 25 October 2006 (2006-10-25), pages 74 - 77 * |
| 王鹏飞 等: "线路保护中突变量检测的自适应算法", 电力系统及其自动化学报, vol. 24, no. 3, pages 76 - 79 * |
| 邓启威 等: "输电系统线路过负荷控制", 电力自动化设备, vol. 22, no. 7, 25 July 2002 (2002-07-25), pages 6 - 9 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049865A (en) * | 2019-12-26 | 2021-06-29 | 深圳市凯弦欣能科技有限公司 | Power parameter detection device and method |
| CN112213553A (en) * | 2020-10-29 | 2021-01-12 | 国网河北省电力有限公司 | Device for measuring current |
| CN113973237A (en) * | 2021-11-02 | 2022-01-25 | 国网湖北综合能源服务有限公司 | Non-embedded Internet of things sensing terminal and application method thereof |
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