CN202196124U - Cable line remote nuclear phase device - Google Patents
Cable line remote nuclear phase device Download PDFInfo
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- CN202196124U CN202196124U CN2011202845860U CN201120284586U CN202196124U CN 202196124 U CN202196124 U CN 202196124U CN 2011202845860 U CN2011202845860 U CN 2011202845860U CN 201120284586 U CN201120284586 U CN 201120284586U CN 202196124 U CN202196124 U CN 202196124U
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Abstract
The present utility model discloses a cable line remote nuclear phase device. The device is provided with a remote nuclear phase instrument (1) which comprises a nuclear phase initiating end (2) and a nuclear phase judging end (3), and the nuclear phase initiating end (2) is provided with a voltage sampling structure, a voltage waveform shaping circuit (4), a nuclear phase initiating module (5) and an initiating end data transmission radio station (6). The nuclear phase judging end is provided with a voltage sampling structure, a voltage waveform shaping circuit (4), a nuclear phase judging module (8) and a judging end data transmission radio station (7), and the initiating end data transmission radio station (6) is connected with the judging end data transmission radio station (7) through a wireless communication circuit. By adopting the above technical scheme, the accuracy is high; functions can be conveniently expanded, remote nuclear phase and electricity testing of cables and equipment can be realized without cutting off power; equipment and personnel safety can be guaranteed through adopting a non-contact method; and the wireless signal anti-interference capability is highlighted, the volume is small, and the use is convenient.
Description
Technical field
The utility model belongs to the technical field of power equipment, relates to the nuclear phase technology of power cable, and more particularly, the utility model relates to the long-range phase checking device of a kind of cable line.
Background technology
Along with urban development improving constantly of requiring of lighting engineering particularly, also increasingly high to the requirement of urban power distribution network development.In order actively to cooperate the demand of urban development, the urban power distribution network pace of construction is constantly accelerated.Medium voltage distribution network is various informative, and lectotype selection and input in science and technology put more effort.At present, urban district power distribution network 10kV overhead transmission line all adopts down the ground cable line, and the insulating transformation of old circuit is also being stepped up to carry out.
Along with constantly putting into operation of these cable lines, solved comparatively outstanding line tree contradiction on the one hand, improve the medium-pressure electricity supply reliability and avoided outer generation of breaking accident; But also brought new contradiction and problem on the other hand, concentrated reflection is in the problem that has produced cable ring-system circuit nuclear phase and electrical verification difficulty thus.
In work such as cable line load reconfiguration, require two power transformations in one's power user's three-phase alternating-current supply phase-sequence phase with need be consistent, this is one of necessary condition that guarantees power supply quality.The traditional core phase method can't satisfy the nuclear phase demand of fast-developing power distribution network.
In the work of full cable line looped network reconfiguration, because cable line is in the situation of all insulation, full-shield, existing phase checking device can't satisfy the nuclear phase requirement of cable line between two electric substations.In order to carry out nuclear phase, adopt traditional nuclear-phase method, its course of work is quite complicated, and the working time that has a power failure is prolonged, and has caused negative effect to operation of power networks.
So, in power construction engineering and electrical network normal power supply and service work, be starved of the technology that can under the condition of charging operation, carry out cable remote nuclear phase and electrical verification, and the corresponding techniques equipment.
The utility model content
The long-range phase checking device of the cable line that the utility model provides its objective is employing wireless digital signal correlation technique, solves the long-range nuclear phase of the cable line under the charged ruuning situation of cable and the problem of electrical verification.
To achieve these goals, the technical scheme taked of the utility model is:
The long-range phase checking device of the cable line that the utility model provided; The long-range phase checking device of described cable line is provided with long-range nuclear phase instrument; Described long-range nuclear phase instrument comprises nuclear phase originating end and nuclear phase judgement end, and described nuclear phase originating end is provided with voltage sampling structure, voltage waveform shaping circuit, nuclear phase initiation module and originating end data radio station; Described nuclear phase judges that end is provided with voltage sampling structure, voltage waveform shaping circuit, nuclear phase judge module and judges the terminal number platform that conducts electricity; Described originating end data radio station is connected through wireless communication line with judging the terminal number platform that conducts electricity.
When power distribution network adopted European ring main unit feeder pillar, described long-range nuclear phase instrument was directly obtained voltage signal from the examination electricity hole of panel type electrification display.
When power distribution network adopted American ring main unit feeder pillar, described long-range nuclear phase instrument was directly obtained induced voltage signal from the cable connect-disconnect plug test point that make in the examination electricity hole of single type electrification display.
For the line facility in pole line or the electric hole of nothing examination, described long-range nuclear phase instrument adopts short-distance wireless probe measurement phase place, and this wireless probe adopts induction power taking pressure mode to obtain phase information and the charged information of circuit; Described long-range nuclear phase instrument obtains the phase place of local terminal through wireless mode, and realizes long-range nuclear phase.
Described originating end data radio station passes power of radio station with the judgement terminal number and is 5W.
In order to realize the goal of the invention identical with technique scheme, the utility model also provides the above-described cable line nuclear-phase method that long-range phase checking device adopts, and its technical scheme is:
Described voltage waveform shaping circuit is shaped as the 50Hz square-wave signal with the three phase sine voltage waveform signal;
At described nuclear phase originating end: described nuclear phase initiation module chooses wherein that the rising edge of the square-wave signal of a phase is a trigger pip; Export trigger pip behind the described originating end data radio station process delay time t1; A trigger pip appears in every 20ms, and the numerical value of described t1 is by the performance parameter decision of described originating end data radio station;
Judge end at described nuclear phase: the described judgement terminal number platform that conducts electricity is received this trigger pip, and described nuclear phase judge module is done the t2 time-delay again to this trigger pip; T1+t2 satisfies the integral multiple of 20ms, and the signal that guarantees to receive and this end signal error on bit timing mutually is as far as possible little; Judge that through the trigger pip after the delay process and nuclear phase the three-phase trigger pip of end does the comparison on the sequential, difference of injection time is minimum is judged as homophase; And through the described judgement terminal number platform feedback nuclear phase successful information that conducts electricity, or confirm the nuclear phase success through the mobile communication call mode;
Described nuclear phase originating end receives the nuclear phase successful information and shows this nuclear phase successful information; Choose next phase again, initiate the nuclear phase request once more, repeat said process, until the success of three-phase nuclear phase.
If the difference of injection time of the signal phase of data radio station signal phase transmission, that did the sequential correction and local terminal≤± 2ms, then assert it is homophase, otherwise assert it is out-phase.
The utility model adopts technique scheme, can reach the expection requirement of nuclear phase fully, and accuracy is high; Can through the three-phase voltage signal sampling apparatus of supporting various device, under the power-off condition cable and equipment not carried out long-range nuclear phase and electrical verification test through its function of multifunctional testing interface expansion; Adopt contactless means to guarantee equipment and personnel's safety; The wireless signal antijamming capability is outstanding, and volume is little, and is easy to use, and its technical application is promoted and must be increased work efficiency greatly and service quality.
Description of drawings
The mark of facing down among expressed content of each width of cloth accompanying drawing of this instructions and the figure is made brief description:
Fig. 1 is the structural representation of the utility model;
Fig. 2 is that schematic diagram is pressed in the induction power taking in the utility model;
Fig. 3 is the structural representation of the wireless probe in the utility model;
Fig. 4 is the phase place of data radio station transmission and the phase place comparison diagram of local terminal;
Fig. 5 is the circuit theory diagrams of the cable remote phase checking device in the utility model.
Be labeled as among the figure:
1, long-range nuclear phase instrument, 2, the nuclear phase originating end, 3, nuclear phase judges end, 4, the voltage waveform shaping circuit, 5, the nuclear phase initiation module, 6, the originating end data radio station, 7, judge the terminal number platform that conducts electricity, 8, the nuclear phase judge module, 9, try electric hole.
Embodiment
Contrast accompanying drawing below,, the embodiment of the utility model is done further detailed explanation, inventive concept, the technical scheme of the utility model are had more complete, accurate and deep understanding to help those skilled in the art through description to embodiment.
As scheme the structure of expressed the utility model, be the long-range phase checking device of a kind of cable line.In order to solve the problem that exists at the described present known technology of this instructions background technology part and to overcome its defective, realize the long-range nuclear phase of the cable line under the charged ruuning situation of cable and the goal of the invention of electrical verification, the technical scheme that the utility model is taked is:
As shown in Figure 1; The long-range phase checking device of cable line that invention is provided is provided with long-range nuclear phase instrument 1; Described long-range nuclear phase instrument 1 comprises nuclear phase originating end 2 and nuclear phase judgement end 3, and described nuclear phase originating end 2 is provided with voltage sampling structure, voltage waveform shaping circuit 4, nuclear phase initiation module 5 and originating end data radio station 6; Described nuclear phase judges that end is provided with voltage sampling structure, voltage waveform shaping circuit 4, nuclear phase judge module 8 and judges the terminal number platform 7 that conducts electricity; Described originating end data radio station 6 is connected through wireless communication line with judging conduct electricity platform 7 of terminal number.
The circuit theory of cable remote phase checking device is as shown in Figure 5.When corresponding phase among the figure (AVCC, BVCC, CVCC) is charged, LED light bright (DA2, DB2, DC2).Choose wherein one through toggle switch (JP1) and begin nuclear phase mutually, just at the pilot lamp of nuclear phase bright (one of DA1, DB1, DC1), the rising edge of the square-wave signal after the signal shaping of this phase is a trigger pip, sends synchronizing signal through serial ports (COM1).Then pilot lamp D3 is bright in the nuclear phase success.
The utility model employing wireless digital signal correlation technique; Applied voltage waveform shaping circuit, nuclear phase initiation module, nuclear phase judge module and data radio station; Carry out the collection of electric signal; And carry out long-range transmission of wireless signals, analysis, judgement, and each of cable checked mutually and distinguished, satisfied the demand of power construction operation.
Compare comprehensive performance test and grouping experiment through the phase checking device that the utility model is provided, show the following characteristics that the utlity model has:
1, the nuclear phase accuracy rate is high, and is easy to carry;
2, antijamming capability is strong, and measuring distance is big;
3, security performance is high, and function can be expanded.
Through professional electric power laboratory this device has been carried out the voltage hierarchical test, under 70%, 90%, 100%, 110%, 125% condition of transmission voltage, tested respectively, the accuracy rate of long-range nuclear phase reaches requirement fully.
Test under the external radio noise disturbed condition also reaches expection and sets requirement, and the nuclear phase accuracy rate meets the requirements.
The said apparatus of the utility model also is equipped with versatile interface, can split equipment to cable, and equipment such as ring main unit carry out nuclear phase, and are applied widely.
Above-mentioned three kinds of voltage sampling methods not only can be used for nuclear phase, also can be used for live testing, and long-range nuclear phase instrument 1 can detect the corresponding phase square-wave signal of local terminal, judge that then this circuit is charged.
Described originating end data radio station 6 with judge that the conduct electricity power of platform 7 of terminal number is 5W.The data radio station of 5W can guarantee the effective communication distance of 10km.
Below be the exemplifying embodiment of the voltage sampling of the utility model:
Embodiment one:
When power distribution network adopted European ring main unit feeder pillar, described long-range nuclear phase instrument 1 was directly obtained voltage signal from the examination electricity hole 9 of panel type electrification display.
Embodiment two:
When power distribution network adopted American ring main unit feeder pillar, described long-range nuclear phase instrument 1 was directly obtained induced voltage signal from the cable connect-disconnect plug test point that make in the examination electricity hole of single type electrification display.
Embodiment three:
For the line facility in pole line or the electric hole of nothing examination, described long-range nuclear phase instrument 1 adopts short-distance wireless probe measurement phase place, and this wireless probe adopts induction power taking pressure mode to obtain phase information and the charged information of circuit; Described long-range nuclear phase instrument 1 obtains the phase place of this end signal through wireless mode, and realizes long-range nuclear phase.
Circuit can have insulation course when probe was installed, but screen layer can not be arranged.
The induction power taking presses principle following:
The point that electromotive force equates in the electric field constitutes equipotential surface, near lead, places two conductors, then divides to be on two equipotential surfaces, and as shown in Figure 2, the electric potential difference of two conductors is:
U＝V2-V1
Can know that by above formula 2 electric potential difference is proportional to the phase voltage of lead near the lead, near lead, place the phase voltage information that two conductors then can obtain lead.Only need when using this probe to be placed in probe near the lead, can induction line voltage.
When wireless probe was measured the local terminal phase place, transmission delay can be ignored.As shown in Figure 3.
In order to realize the goal of the invention identical with technique scheme, the utility model also provides the above-described cable line nuclear-phase method that long-range phase checking device adopts, and its technical scheme is:
Described voltage waveform shaping circuit 4 is shaped as the 50Hz square-wave signal with the three phase sine voltage waveform signal;
At described nuclear phase originating end 2: described nuclear phase initiation module 5 chooses wherein that the rising edge of the square-wave signal of a phase is a trigger pip; Export trigger pip behind the described originating end data radio station 6 process delay time t1; A trigger pip appears in every 20ms, and the numerical value of described t1 is by the performance parameter decision of described originating end data radio station 6;
Judge end 3 at described nuclear phase: the described judgement terminal number platform 7 that conducts electricity is received this trigger pip, and 8 pairs of these trigger pips of described nuclear phase judge module are done the t2 time-delay again; T1+t2 satisfies the integral multiple of 20ms, and the signal that guarantees to receive and original signal error on bit timing mutually is as far as possible little; Judge that through the trigger pip after the delay process and nuclear phase the three-phase trigger pip of end 3 does the comparison on the sequential, difference of injection time is minimum is judged as homophase; And through the described judgement terminal number platform 7 feedback nuclear phase successful information that conduct electricity, or confirm the nuclear phase success through the mobile communication call mode;
Described nuclear phase originating end 2 receives the nuclear phase successful information and shows this nuclear phase successful information; Choose next phase again, initiate the nuclear phase request once more, repeat said process, until the success of three-phase nuclear phase.
If the difference of injection time of the phase place of data radio station phase place transmission, that did the sequential correction and local terminal≤± 2ms, then assert it is homophase, otherwise assert it is out-phase.
As shown in Figure 4; During nuclear phase; 1 of long-range nuclear phase instrument needs the phase place (i.e. signal A among the figure) of relatively data radio station transmission and the phase place (i.e. signal B among the figure) of local terminal, because the phase bit timing of three-phase circuit is spaced apart 6.667ms, if the difference of injection time (Φ among the figure) of the phase place (after doing the sequential correction) of data radio station transmission and the phase place of local terminal is ± 2ms; Can think homophase, otherwise be out-phase.
Reach summary through test to its principle and experimental performance; The apparatus and method of proof the utility model can reach the expection requirement fully; Accuracy is high; Extendable functions (multifunctional testing interface) particularly, three-phase voltage signal sampling apparatus that can supporting various device is not carrying out the nuclear phase test to cable and equipment under the power-off condition.Adopt contactless means to guarantee equipment and personnel's safety.The wireless signal antijamming capability is outstanding, and volume is little, and is easy to use, and its technical application is promoted and must be increased work efficiency greatly and service quality.
Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted the method design of the utility model and the improvement of the various unsubstantialities that technical scheme is carried out; Or the design of the utility model and technical scheme are directly applied to other occasion without improving, all within the protection domain of the utility model.
Claims (5)
1. long-range phase checking device of cable line; It is characterized in that: the long-range phase checking device of described cable line is provided with long-range nuclear phase instrument (1); Described long-range nuclear phase instrument (1) comprises nuclear phase originating end (2) and nuclear phase judgement end (3), and described nuclear phase originating end (2) is provided with voltage sampling structure, voltage waveform shaping circuit (4), nuclear phase initiation module (5) and originating end data radio station (6); Described nuclear phase judges that end is provided with voltage sampling structure, voltage waveform shaping circuit (4), nuclear phase judge module (8) and the judgement terminal number platform (7) that conducts electricity; Described originating end data radio station (6) is connected through wireless communication line with judging the terminal number platform (7) that conducts electricity.
2. according to the long-range phase checking device of the described cable line of claim 1, it is characterized in that: when power distribution network adopted European ring main unit feeder pillar, described long-range nuclear phase instrument (1) was directly obtained voltage signal from the examination electricity hole (9) of panel type electrification display.
3. according to the long-range phase checking device of the described cable line of claim 1; It is characterized in that: when power distribution network adopted American ring main unit feeder pillar, described long-range nuclear phase instrument (1) was directly obtained induced voltage signal from the cable connect-disconnect plug test point that make in the examination electricity hole of single type electrification display.
4. according to the long-range phase checking device of the described cable line of claim 1; It is characterized in that: for the line facility in pole line or the electric hole of nothing examination; Described long-range nuclear phase instrument (1) adopts short-distance wireless probe measurement phase place, and this wireless probe adopts induction power taking pressure mode to obtain phase information and the charged information of circuit; Described long-range nuclear phase instrument (1) obtains the phase place of local terminal through wireless mode, and realizes long-range nuclear phase.
5. according to the long-range phase checking device of the described cable line of claim 1, it is characterized in that: described originating end data radio station (6) and judge that the conduct electricity power of platform (7) of terminal number is 5W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202845860U CN202196124U (en) | 2011-08-06 | 2011-08-06 | Cable line remote nuclear phase device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202845860U CN202196124U (en) | 2011-08-06 | 2011-08-06 | Cable line remote nuclear phase device |
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| CN202196124U true CN202196124U (en) | 2012-04-18 |
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| CN2011202845860U Expired - Fee Related CN202196124U (en) | 2011-08-06 | 2011-08-06 | Cable line remote nuclear phase device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323492A (en) * | 2011-08-06 | 2012-01-18 | 安徽省电力公司芜湖供电公司 | Remote phasing device for cable lines and phasing method thereof |
| CN104215838A (en) * | 2014-09-18 | 2014-12-17 | 国家电网公司 | Remote nuclear phase method for intelligent substation |
| CN104316765A (en) * | 2014-11-06 | 2015-01-28 | 南京世都科技有限公司 | Power grid nuclear phase signal generator |
| CN106405328A (en) * | 2016-08-31 | 2017-02-15 | 国网山东省电力公司菏泽供电公司 | Power distribution network live operation detection method |
| CN111638405A (en) * | 2020-07-19 | 2020-09-08 | 国网山西省电力公司电力科学研究院 | Remote secondary nuclear phase instrument based on synchronous measurement |
-
2011
- 2011-08-06 CN CN2011202845860U patent/CN202196124U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323492A (en) * | 2011-08-06 | 2012-01-18 | 安徽省电力公司芜湖供电公司 | Remote phasing device for cable lines and phasing method thereof |
| CN104215838A (en) * | 2014-09-18 | 2014-12-17 | 国家电网公司 | Remote nuclear phase method for intelligent substation |
| CN104215838B (en) * | 2014-09-18 | 2017-04-12 | 国家电网公司 | Remote nuclear phase method for intelligent substation |
| CN104316765A (en) * | 2014-11-06 | 2015-01-28 | 南京世都科技有限公司 | Power grid nuclear phase signal generator |
| CN104316765B (en) * | 2014-11-06 | 2017-09-01 | 南京世都科技有限公司 | A kind of power network nuclear phase signal generator |
| CN106405328A (en) * | 2016-08-31 | 2017-02-15 | 国网山东省电力公司菏泽供电公司 | Power distribution network live operation detection method |
| CN106405328B (en) * | 2016-08-31 | 2019-02-26 | 国网山东省电力公司菏泽供电公司 | A kind of power distribution network, which does not have a power failure, transports detecting method |
| CN111638405A (en) * | 2020-07-19 | 2020-09-08 | 国网山西省电力公司电力科学研究院 | Remote secondary nuclear phase instrument based on synchronous measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: STATE GRID WUHU POWER SUPPLY CO., LTD. OF ANHUI ELECTRIC POWER CO., LTD. Effective date: 20140403 Owner name: STATE GRID WUHU POWER SUPPLY CO., LTD. OF ANHUI EL Effective date: 20140403 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: STATE GRID WUHU POWER SUPPLY CO., LTD. OF ANHUI EL Free format text: FORMER NAME: ANHUI ELECTRIC POWER CORPORATION, WUHU POWER SUPPLY COMPANY |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 241000 WUHU, ANHUI PROVINCE TO: 100031 XICHENG, BEIJING |
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| CP01 | Change in the name or title of a patent holder |
Address after: 241000 Zhongshan North Road, Jinghu, Anhui, No. 18, Patentee after: STATE GRID ANHUI WUHU POWER SUPPLY Co. Address before: 241000 Zhongshan North Road, Jinghu, Anhui, No. 18, Patentee before: ANHUI WUHU POWER SUPPLY Co. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140403 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: STATE GRID ANHUI WUHU POWER SUPPLY Co. Address before: 241000 Zhongshan North Road, Jinghu, Anhui, No. 18, Patentee before: STATE GRID ANHUI WUHU POWER SUPPLY Co. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20200806 |