CN103457192A - Intelligent medium voltage switch cabinet - Google Patents

Intelligent medium voltage switch cabinet Download PDF

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Publication number
CN103457192A
CN103457192A CN2013103464431A CN201310346443A CN103457192A CN 103457192 A CN103457192 A CN 103457192A CN 2013103464431 A CN2013103464431 A CN 2013103464431A CN 201310346443 A CN201310346443 A CN 201310346443A CN 103457192 A CN103457192 A CN 103457192A
Authority
CN
China
Prior art keywords
module
switch cabinet
voltage switch
online detection
intelligent medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2013103464431A
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Chinese (zh)
Inventor
王俊峰
裴军
吴参林
蔡平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Daqo Automation Technology Co Ltd
Original Assignee
Nanjing Daqo Automation Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Daqo Automation Technology Co Ltd filed Critical Nanjing Daqo Automation Technology Co Ltd
Priority to CN2013103464431A priority Critical patent/CN103457192A/en
Publication of CN103457192A publication Critical patent/CN103457192A/en
Pending legal-status Critical Current

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Abstract

The invention provides an intelligent medium voltage switch cabinet which comprises a circuit breaker arranged on an electric chassis, a protective measurement and control module, an on-line detection module and a human-computer interface. The protective measurement and control module and the on-line detection module are arranged in the circuit breaker. The switch cabinet receives various sensor signals of the on-lone detection module, and the protective measurement and control module receives various signals from the switch cabinet. The intelligent medium voltage switch cabinet is applied to the medium voltage field, can collect operating data independently, can detect equipment defects and faults, sends alarming signals before the defects are changed to be faults, and therefore measures are adopted to avoid accidents.

Description

Intelligent medium-voltage switch cabinet
Technical field
The present invention relates to a kind of switch cubicle, be specifically related to a kind of Intelligent medium-voltage switch cabinet that supplies electrical domain for power distribution network.
Background technology
Intelligent grid is the focus of electric power industry development and concern, relates to generating, generating, transmission of electricity, distribution or electricity consumption, has all proposed the intelligentized requirements in aspect such as monitoring, control, protection; Intelligent grid is by advanced sensing measurement technology, ICT (information and communication technology), analysis decision technology and automatic control technology and electricity power technology and the integrated and new-modernization electrical network that forms of electrical network infrastructure height;
Intelligent medium-voltage switch cabinet is as most important control element in electric power system, and its automation and intellectuality are the intelligentized bases of electric equipment.The intellectuality of medium voltage breaker is the work of a update, it relates to the technical progress and innovation development in a lot of fields, as aspects such as sensing technology, microelectric technique, computer technology, information technology and circuit breaker itself and operating mechanisms, realize the self diagnosis of running status, the controlled actuating of operating mechanism.
Intelligent medium-voltage switch cabinet be in an equipment functions such as integrated circuit breaker, measurement, protection, control, communication, online detection, electronic control in the integrated equipment of one.The solution that this height is integrated, make the mean time to maintenance action of switch cubicle greatly shorten than traditional solution, makes it to become the first-selection of the long-term Continuous Running Equipment of requirement.
Realization at the intelligent grid of China's electric power system mainly concentrates on the above system of 110kV, and medium voltage network is also substantially not universal.
Summary of the invention
The problem that the present invention is directed to above-mentioned prior art existence makes improvements, be that the technical problem to be solved in the present invention is to provide a kind of Intelligent medium-voltage switch cabinet, this Intelligent medium-voltage switch cabinet is applicable to middle pressure field, can independently gather service data, but checkout equipment defect and fault, before becoming fault, defect sends alarm signal, in order to take measures to avoid accident to occur.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A kind of Intelligent medium-voltage switch cabinet; comprise circuit breaker, protection control module, online detection module, the man-machine interface be located on electric chassis truck; described protection control module, online detection module are located in described circuit breaker, and described man-machine interface receives the signal from described online detection module and protection control module.
As preferably, described on-line monitoring module comprises online detection mainboard and the breaker mechanical displacement transducer be connected with described online detection mainboard, AD acquisition module, wireless temperature communication module, jiggering communication module electrically.
Described online detection module also comprises various measuring transducers, and described transducer comprises mechanical displacement sensor, circuit-breaker switching on-off current sensor, leakage current sensor, energy storage motor current sensor, contact temperature transducer, electric chassis vehicle controller.
As preferably, described mechanical displacement sensor, circuit-breaker switching on-off current sensor provide signal for described breaker mechanic property module, described leakage current sensor, energy storage motor current sensor provide signal for described AD acquisition module, described contact temperature transducer and described wireless temperature communication module communicate, and described electric chassis truck transducer and described electric chassis truck transducer communicate.
As preferably, described protection control module comprises protection observing and controlling mainboard and the AD acquisition module, the input and output module that are connected with protection observing and controlling mainboard.
As preferably, also be provided with humiture collection module, electric ground switch module, potential indicator module in the video acquisition module that communicates with described man-machine interface, cabinet in Intelligent medium-voltage switch cabinet.
The invention has the advantages that with microelectronics, computer technology and novel sensor and set up new circuit breaker electrical secondary system.Its main feature is by power electronic technology, Digital Control installation composition performance element, replaces auxiliary switch and the auxiliary relay of conventional mechanical structure.Novel sensor matches with the Digital Control device, independent collection service data, but checkout equipment defect and fault are sent alarm signal before defect becomes fault, in order to take measures to avoid accident to occur.Intelligent breaker is realized the electronics actuating, becomes mechanical handcart into electric handcart.
At first Intelligent medium-voltage switch cabinet of the present invention is that circuit breaker is carried out to intelligentized design, protection that circuit breaker is integrated and the large function of on-line monitoring two.The protection module design is by integrated electronic type current-voltage transformer on circuit breaker, gathers current and voltage signals; Intelligent control module has function and the one such as protection, monitoring, troubleshooting, communication, analog data collection, IEC61850 communication.On-line monitoring design is that in on/off switch mechanical property to circuit breaker, on/off switch current characteristics, contact temperature characteristic, Leakage Current characteristic, energy storage motor current characteristics, cabinet, the humiture characteristic is detected, and chassis vehicle, earthing are carried out to electronic control.By being arranged on unified the demonstration and control of man-machine interface on switch cabinet panel.
The accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms the part of specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the functional block diagram of the Intelligent medium-voltage switch cabinet of one embodiment of the present invention.
Embodiment
As shown in Figure 1; the present invention discloses a kind of middle pressure intelligent breaker; comprise circuit breaker, protection control module, online detection module, the man-machine interface be located on electric chassis truck; protection control module, online detection module are located in circuit breaker; switch cubicle receives the signal from online detection module, and the protection control module receives the signal from switch cubicle.
Online detection module comprises online detection mainboard and the breaker mechanic property module communicated with described online detection mainboard, AD acquisition module, wireless temperature communication module, jiggering communication module electrically.
Online detection module also comprises sensor assembly, and sensor assembly comprises mechanical displacement sensor, circuit-breaker switching on-off current sensor, leakage current sensor, energy storage motor current sensor, contact temperature transducer, electric chassis vehicle controller.
Mechanical displacement sensor, circuit-breaker switching on-off current sensor provide signal for the breaker mechanic property module, leakage current sensor, energy storage motor current sensor provide signal for the AD acquisition module, contact temperature transducer and wireless temperature communication module communicate, and electric chassis truck communication and electric chassis vehicle controller communicate.
The protection control module comprises protection observing and controlling mainboard and the AD acquisition module, the input and output module that communicate with protection observing and controlling mainboard.Wherein, the AD acquisition module gathers A, B, C three-phase voltage current and zero-sequence current; Input and output module controls circuit breaker is opened implantation site, is outputed position.
Protection control module, online detection module communicate with described man-machine interface respectively.Man-machine interface communicates by Ethernet and other system.
Also be provided with humiture collection module, electric ground switch module, potential indicator module in video acquisition module, cabinet in Intelligent medium-voltage switch cabinet.
Built-in integrated protection measure and control device, built-in integrated integration voltage and current transformer module, built-in integrated circuit breaker on-line measuring device, have a personal-machine unify menu show and control whole device, has Ethernet and RS485 communication interface.
At first built-in protection and measurement and control device and integrated electric current and voltage sensor.The functions such as the defencive function of switch cubicle configuration in the past, failure wave-recording have been integrated in to a very little device the inside, and have been directly installed on circuit breaker.The external wiring of switch is just very simple like this, has reduced current/voltage wiring, on off state, breaker control etc. wiring.This means and can shorten engineering design, wiring and factory acceptance and required time of test.Also improved reliability of operation, operation troubles safeguards that aspect is just very simple, directly changes switch, just can resume operation simultaneously.
Built-in combined electrical voltage current transformer is comprised of current transformer, capacitor voltage divider, insulation system and part.Current transformer is measured level and is adopted low-power instrument transformer (LPCT), protected level to adopt rogowski current transformer; make the magnetic saturation distortion phenomenon of current transformer stop; the good linearity and wide measuring range are arranged; well having utilized both high accuracies and the good linearity, is the good combination of measuring and protecting.Voltage transformer adopts capacitor voltage divider, utilize the principle of capacitance current at ohmically voltage drop and integration, during installation and high-pressure conductor link into an integrated entity, avoided the ferro resonance phenomenon of voltage transformer, and can provide transient characterisitics preferably, simple and conserve space.
Communication system meets the IEC61850 standard fully, also supports Modbus TCP, Modbus RTU, IEC104, IEC101 simultaneously.Support the sampled value transmission of the OO station level MMS of transformer station transmission, status information transmission (trip signal, block signal) and analog measurement, also support, support the interoperability characteristic of smart machine, by the network switch can with main website of transformer station, scheduling station communication, support telecommunication, can carry out remote diagnosis and maintenance.Wireless telecommunications are supported in local communication, can debug easily and repair apparatus.In order to prevent the unauthorized user misoperation and to guarantee that the user is according to limiting operation, be provided with four other operating rights of level: viewer, operator, engineer and keeper.Authority is applicable to man-machine interface, web browser and configuration tool.Communication modes is supported Ethernet, RS485.
Man-machine interface is responsible for receiving Monitoring Data and the protected data of protection and measurement and control device; be received in the data of line detector; and protection and measurement and control device, on-line measuring device are configured and show; whole data are carried out to analysis-by-synthesis; and report and submit various Monitoring Data, various warning information according to the requirement of intelligent substation with consolidation form, realize the MMS communication of station level.Realize temperature and humidity measurement and demonstration in charged demonstration, cabinet, realize the Communication Control of electric grounding knife-switch, electric chassis truck; Realize combined floodgate and separating brake this locality and the distant place control of circuit breaker, realize the logout of every alarm and fault, realize the demonstration of primary system figure.Video information in display case and the teletransmission of vision signal.
Online detection module mainly realizes that breaker mechanic property detects (moving contact of breaker stroke), divide-shut brake tripping coil electric current, switch cubicle 6 road contact temperature in-service monitorings, the detection of electric chassis truck current of electric, energy storage motor current detecting, on off state.
The course of work of the present invention is: when the system failure breaks down; after protective relaying device in being arranged on the protection control module sends sub-gate signal or sends operation signal by operating personnel; the protection control module is started working; judge the residing condition of work of current circuit breaker; send different quantitative control informations and automatically adjust the parameter of operating mechanism; to obtain the kinetic characteristic adapted with the current system operating state, then make the circuit breaker action.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment, the present invention is had been described in detail, for a person skilled in the art, its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (6)

1. an Intelligent medium-voltage switch cabinet; it is characterized in that: comprise circuit breaker, protection control module, online detection module, the man-machine interface be located on electric chassis truck; described protection control module, online detection module are located in described circuit breaker, and described man-machine interface receives the signal from described online detection module and protection control module.
2. Intelligent medium-voltage switch cabinet according to claim 1 is characterized in that: described on-line monitoring module comprises online detection mainboard and the breaker mechanical displacement transducer be connected with described online detection mainboard, AD acquisition module, wireless temperature communication module, jiggering communication module electrically.
3. Intelligent medium-voltage switch cabinet according to claim 1, it is characterized in that: described online detection module also comprises various measuring transducers, and described transducer comprises mechanical displacement sensor, circuit-breaker switching on-off current sensor, leakage current sensor, energy storage motor current sensor, contact temperature transducer, electric chassis vehicle controller.
4. according to the described Intelligent medium-voltage switch cabinet of claim 2 or 3, it is characterized in that: described mechanical displacement sensor, circuit-breaker switching on-off current sensor provide signal for described breaker mechanic property module, described leakage current sensor, energy storage motor current sensor provide signal for described AD acquisition module, described contact temperature transducer and described wireless temperature communication module communicate, and described electric chassis truck transducer and described electric chassis truck transducer communicate.
5. Intelligent medium-voltage switch cabinet according to claim 1 is characterized in that: described protection control module comprises protection observing and controlling mainboard and the AD acquisition module, the input and output module that are connected with protection observing and controlling mainboard.
6. Intelligent medium-voltage switch cabinet according to claim 1 is characterized in that: also comprise humiture collection module, electric ground switch module, potential indicator module in the video acquisition module that communicates with described man-machine interface, cabinet.
CN2013103464431A 2013-08-09 2013-08-09 Intelligent medium voltage switch cabinet Pending CN103457192A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103713216A (en) * 2013-12-25 2014-04-09 深圳供电局有限公司 Intelligent on-line monitoring device of medium voltage switchgear
CN104113139A (en) * 2014-07-21 2014-10-22 保定市瑞高电气有限公司 Intelligent integrated comprehensive protection device
CN104917091A (en) * 2015-07-09 2015-09-16 新疆特变电工自控设备有限公司 Plateau type intelligent withdrawable alternating-current metal-enclosed switchgear
CN105098987A (en) * 2015-08-25 2015-11-25 中天电气技术有限公司 Medium-voltage intelligent switching equipment
CN105896365A (en) * 2014-12-16 2016-08-24 常州帕斯菲克自动化技术股份有限公司 Integrated intelligent handcart circuit breaker
CN106774034A (en) * 2017-03-13 2017-05-31 沈阳工程学院 A kind of switch cubicle monitoring device
CN108471519A (en) * 2018-03-21 2018-08-31 国家电网公司 A kind of KYN28-12 types switch cabinet contact tape electricity visual detection device
CN112234710A (en) * 2020-09-29 2021-01-15 华电福新广州能源有限公司 Power plant digital medium-voltage switch equipment intelligent management system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002262417A (en) * 2001-02-28 2002-09-13 Nissin Electric Co Ltd Switchgear
CN202978078U (en) * 2012-12-07 2013-06-05 福建森达电气有限公司 Intelligent-type medium-voltage whole-set switch device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002262417A (en) * 2001-02-28 2002-09-13 Nissin Electric Co Ltd Switchgear
CN202978078U (en) * 2012-12-07 2013-06-05 福建森达电气有限公司 Intelligent-type medium-voltage whole-set switch device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103713216A (en) * 2013-12-25 2014-04-09 深圳供电局有限公司 Intelligent on-line monitoring device of medium voltage switchgear
CN104113139A (en) * 2014-07-21 2014-10-22 保定市瑞高电气有限公司 Intelligent integrated comprehensive protection device
CN105896365A (en) * 2014-12-16 2016-08-24 常州帕斯菲克自动化技术股份有限公司 Integrated intelligent handcart circuit breaker
CN104917091A (en) * 2015-07-09 2015-09-16 新疆特变电工自控设备有限公司 Plateau type intelligent withdrawable alternating-current metal-enclosed switchgear
CN105098987A (en) * 2015-08-25 2015-11-25 中天电气技术有限公司 Medium-voltage intelligent switching equipment
CN106774034A (en) * 2017-03-13 2017-05-31 沈阳工程学院 A kind of switch cubicle monitoring device
CN108471519A (en) * 2018-03-21 2018-08-31 国家电网公司 A kind of KYN28-12 types switch cabinet contact tape electricity visual detection device
CN112234710A (en) * 2020-09-29 2021-01-15 华电福新广州能源有限公司 Power plant digital medium-voltage switch equipment intelligent management system
CN112234710B (en) * 2020-09-29 2021-04-27 华电福新广州能源有限公司 Power plant digital medium-voltage switch equipment intelligent management system

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Application publication date: 20131218