CN112485600A - Distribution line fault path detection primary and secondary fusion sensor and sensor network - Google Patents
Distribution line fault path detection primary and secondary fusion sensor and sensor network Download PDFInfo
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- CN112485600A CN112485600A CN202011432716.0A CN202011432716A CN112485600A CN 112485600 A CN112485600 A CN 112485600A CN 202011432716 A CN202011432716 A CN 202011432716A CN 112485600 A CN112485600 A CN 112485600A
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- 230000004927 fusion Effects 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 37
- 238000012545 processing Methods 0.000 claims description 18
- 230000003750 conditioning effect Effects 0.000 claims description 10
- 230000005236 sound signal Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 206010063385 Intellectualisation Diseases 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a distribution line fault path detection primary and secondary fusion sensor and a sensor network, wherein the primary and secondary fusion sensor replaces a conventional mutual inductor, so that the size, the weight and the cost of equipment are reduced, the installation difficulty and the safety risk are reduced, the safety risk caused by independent power supply of the sensor is avoided by self energy acquisition of an energy acquisition current mutual inductor, and the operation reliability and the operation and maintenance efficiency are improved.
Description
Technical Field
The invention relates to the technical field of on-line monitoring of power systems, in particular to a distribution line fault path detection primary and secondary fusion sensor and a sensor network.
Background
The fault path detection is an important technical means in power distribution network automation, short circuit and ground fault detection and positioning are realized through current and voltage sensors, fault isolation and power supply recovery in a non-fault area are further performed through an automatic means, so that power failure time is shortened, and power supply reliability is provided. Existing fault path detection is mainly done by means of a Fault Path Indicator (FPI) or a distribution automation terminal (DTU/FTU/TTU).
The fault path indicator can achieve small volume and self-energy supply, but has single function, can only complete fault path detection and indication, and cannot complete more automatic functions. Relatively speaking, the distribution automation terminal has automation functions such as fault isolation, load transfer and switch control, but the distribution automation terminal is used as a secondary device and needs to be matched with a primary device such as a transformer, so that the compatibility problem exists, and meanwhile, the device is large in size and needs to be powered by a power supply, so that the loads of installation, operation and maintenance are increased.
Disclosure of Invention
The invention aims to solve the technical problems that the existing fault path detector has single function, the power distribution automation terminal has large volume, needs power supply and has compatibility problems, so that the invention provides a primary and secondary fusion sensor and a sensor network for detecting the fault path of a power distribution line, the voltage and current sensors replace conventional transformers, and the application of energy taking and wireless communication is combined, so that the intellectualization and automation of an automatic power distribution sensor are realized, the floor area of equipment is reduced, the energy is saved, the consumption is reduced, and the operation and maintenance level of power distribution equipment is improved.
The invention is realized by the following technical scheme:
a distribution line fault path detection primary and secondary fusion sensor comprises a sensing energy acquisition part and a data processing communication part; the data processing communication part is fixedly arranged on the sensing energy-taking part, and the shell of the data processing communication part and the shell of the sensing energy-taking part are equipotential;
the sensing energy-taking part comprises a hollow coil type current sensor and a capacitance type voltage sensor; the hollow coil type current sensor is used for detecting a current signal of a distribution line; the capacitive voltage sensor is used for detecting a voltage signal of a distribution line;
the data processing communication part comprises a conditioning indication module and a communication module; the conditioning indication module is used for receiving a current signal sent by the hollow coil type current sensor and a voltage signal sent by the capacitance type voltage sensor and determining a fault path based on the current signal and the voltage signal; and the communication module is used for finishing the communication between the primary and secondary fusion sensors.
Further, the sensing energy taking part is of a pincer-shaped structure and is used for being installed on an overhead line or a cable in an electrified mode.
Further, the sensing energy taking part also comprises an energy taking current transformer; and the energy taking current transformer is used for obtaining electric energy.
Further, the conditioning indication module is also used for collecting the electric energy provided by the energy-taking current transformer.
Further, the data processing communication part also comprises a local indication module and a power supply control module;
the local indicating module is used for indicating the fault position through a sound signal and/or an optical signal when the distribution line has a fault;
and the power supply control module is used for storing the electric energy sent by the energy taking current transformer, converting the electric energy into a stable power supply and supplying power to the sensing energy taking part and the data processing communication part.
A sensor network for detecting a primary and secondary fusion sensor based on the fault path of the distribution line comprises a plurality of primary and secondary fusion sensors and a distribution substation;
the primary and secondary fusion sensors are communicated with each other in a wireless communication mode;
each secondary fusion sensor sends data to a power distribution substation in a wireless communication mode and receives an automation control command sent by the power distribution substation.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the sensing energy-taking part is designed into a pincerlike structure, so that the sensing energy-taking part can be directly installed on an overhead line or a cable in an electrified way, and the rapid operation and maintenance are realized.
2. The conventional mutual inductor is replaced by the primary and secondary fusion sensor, so that the size, weight and cost of equipment are reduced, and the installation difficulty and safety risk are reduced.
3. The current transformer can automatically obtain energy, so that the safety risk caused by independent power supply of the sensor is avoided, and the operational reliability and the operation and maintenance efficiency are improved.
4. Data exchange is realized by constructing a sensor network, a communication cable is not needed, and the method has the advantages of flexible configuration and simple structure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a distribution line fault path detection primary-secondary fusion sensor according to the present invention.
Fig. 2 is a schematic diagram of a distribution line fault path detection primary-secondary fusion sensor according to the present invention.
Fig. 3 is a schematic diagram of a sensor network for detecting a primary and secondary fusion sensor based on a distribution line fault path according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1-2, the present invention provides a distribution line fault path detection-secondary fusion sensor, which includes a sensing energy-taking part and a data processing communication part; the data processing communication part is fixedly arranged on the sensing energy-taking part, and the shell of the data processing communication part and the shell of the sensing energy-taking part are equipotential.
The sensing energy-taking part comprises a hollow coil type current sensor and a capacitance type voltage sensor; the hollow coil type current sensor is used for detecting a current signal of the distribution line; and the capacitive voltage sensor is used for detecting the voltage signal of the distribution line.
The data processing communication part comprises a conditioning indication module and a communication module; the conditioning indicating module is used for receiving a current signal sent by the hollow coil type current sensor and a voltage signal sent by the capacitance type voltage sensor and determining a fault path based on the current signal and the voltage signal; and the communication module is used for finishing the communication between the primary and secondary fusion sensors.
Further, the method for determining the fault path based on the current signal and the voltage signal of the present embodiment includes, but is not limited to, using a zero sequence reactive power direction method, a zero sequence current active component method, an active power method, a first half wave method, and a transient zero sequence current comparison method.
Further, the sensing energy taking part is of a pincer-shaped structure and is used for being installed on an overhead line or a cable in an electrified mode.
Furthermore, the sensing energy-taking part also comprises an energy-taking current transformer which is used for obtaining electric energy.
Further, the conditioning indication module is also used for collecting electric energy provided by an energy taking Current Transformer (CT).
The conditioning indication module in the embodiment can also have the functions of power flow monitoring, automatic control, power quality detection, line loss monitoring and the like.
Further, the data processing communication part also comprises a local indication module and a power supply control module.
And the local indicating module is used for indicating the fault position through sound signals and/or light signals when the distribution line has a fault.
And the power supply control module is used for storing the electric energy sent by the energy taking current transformer, converting the electric energy into a stable power supply and supplying power to the sensing energy taking part and the data processing communication part.
Specifically, conventional mutual inductors are replaced by the hollow coil type current sensor and the capacitance type voltage sensor, and the integration, the intellectualization and the automation of the automatic distribution sensor are realized by combining the energy taking and wireless communication module, so that the occupied area of equipment can be reduced, the energy is saved, the consumption is reduced, and the operation and maintenance level of distribution equipment is improved. The sensing energy-taking part is designed into a pincerlike structure so as to be conveniently installed on an overhead line or a cable of a power distribution network, fault path detection is realized by analyzing the voltage and the current of a detection point during fault, and the monitoring and the protection of regional distribution lines are realized.
Example 2
As shown in fig. 3, a sensor network for detecting a primary and secondary fusion sensor based on the distribution line fault path includes a plurality of primary and secondary fusion sensors and a distribution substation.
The multiple primary and secondary fusion sensors communicate with each other in a wireless communication manner.
And each secondary fusion sensor transmits data to the power distribution substation in a wireless communication mode and receives an automation control command transmitted by the power distribution substation.
Further, the wireless communication modes include, but are not limited to, 4G, narrowband internet of things (NB-IOT), and LoRa.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A distribution line fault path detection primary and secondary fusion sensor is characterized by comprising a sensing energy acquisition part and a data processing communication part; the data processing communication part is fixedly arranged on the sensing energy-taking part, and the shell of the data processing communication part and the shell of the sensing energy-taking part are equipotential;
the sensing energy-taking part comprises a hollow coil type current sensor and a capacitance type voltage sensor; the hollow coil type current sensor is used for detecting a current signal of a distribution line; the capacitive voltage sensor is used for detecting a voltage signal of a distribution line;
the data processing communication part comprises a conditioning indication module and a communication module; the conditioning indication module is used for receiving a current signal sent by the hollow coil type current sensor and a voltage signal sent by the capacitance type voltage sensor and determining a fault path based on the current signal and the voltage signal; and the communication module is used for finishing the communication between the primary and secondary fusion sensors.
2. The distribution line fault path detection secondary fusion sensor of claim 1, wherein the sensing power pick-up portion is of a clamp-on configuration for live-wire installation on an overhead line or cable.
3. The distribution line fault path detecting-secondary fusion sensor of claim 1, wherein the sensing energy extraction portion further comprises an energy extraction current transformer; and the energy taking current transformer is used for obtaining electric energy.
4. The distribution line fault path detecting-secondary fusion sensor of claim 3, wherein the conditioning indication module is further configured to collect the electrical energy provided by the energy-extracting current transformer.
5. The distribution line fault path detecting primary-secondary fusion sensor of claim 1 wherein the data processing and communication portion further comprises a local indication module and a power control module;
the local indicating module is used for indicating the fault position through a sound signal and/or an optical signal when the distribution line has a fault;
and the power supply control module is used for storing the electric energy sent by the energy taking current transformer, converting the electric energy into a stable power supply and supplying power to the sensing energy taking part and the data processing communication part.
6. A sensor network for detecting a secondary fusion sensor based on a distribution line fault path according to claim 1, comprising a plurality of secondary fusion sensors and distribution substations;
the primary and secondary fusion sensors are communicated with each other in a wireless communication mode;
each secondary fusion sensor sends data to a power distribution substation in a wireless communication mode and receives an automation control command sent by the power distribution substation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011432716.0A CN112485600A (en) | 2020-12-09 | 2020-12-09 | Distribution line fault path detection primary and secondary fusion sensor and sensor network |
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| CN202011432716.0A CN112485600A (en) | 2020-12-09 | 2020-12-09 | Distribution line fault path detection primary and secondary fusion sensor and sensor network |
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| CN104422480A (en) * | 2013-08-28 | 2015-03-18 | 国家电网公司 | Power transmission line online monitoring circuit and intelligent insulator suspension ring |
| US20160041216A1 (en) * | 2013-03-29 | 2016-02-11 | Beijing Inhand Networks Technology Co., Ltd. | Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network |
| CN109521335A (en) * | 2018-11-16 | 2019-03-26 | 国网江苏省电力有限公司盐城供电分公司 | It is a kind of to take the high-voltage cable insulating state on-line detecting system that powered based on self-induction |
| CN110514944A (en) * | 2019-07-05 | 2019-11-29 | 国网陕西省电力公司电力科学研究院 | Take electricity with measurement in the fault detector of one based on capacitance partial pressure |
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2020
- 2020-12-09 CN CN202011432716.0A patent/CN112485600A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673420A (en) * | 2009-09-27 | 2010-03-17 | 西安迅腾科技有限责任公司 | System and method for comprehensively examining wireless sensor network node |
| CN104076243A (en) * | 2013-03-29 | 2014-10-01 | 北京映翰通网络技术股份有限公司 | Method for detection and indication of single-phase ground faults of small current grounding power distribution network and device |
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Application publication date: 20210312 |