CN203455024U - Early warning apparatus for secure operation of switch cabinet - Google Patents

Early warning apparatus for secure operation of switch cabinet Download PDF

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Publication number
CN203455024U
CN203455024U CN201320124192.8U CN201320124192U CN203455024U CN 203455024 U CN203455024 U CN 203455024U CN 201320124192 U CN201320124192 U CN 201320124192U CN 203455024 U CN203455024 U CN 203455024U
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CN
China
Prior art keywords
unit
central processing
processing unit
early warning
cpu
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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.)
Expired - Fee Related
Application number
CN201320124192.8U
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Chinese (zh)
Inventor
牛红星
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.)
Shanghai Geifu Photoelectric Science & Technology Co Ltd
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Shanghai Geifu Photoelectric Science & Technology Co Ltd
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Priority to CN201320124192.8U priority Critical patent/CN203455024U/en
Application granted granted Critical
Publication of CN203455024U publication Critical patent/CN203455024U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to an early warning apparatus for secure operation of a switch cabinet. The early warning apparatus consists of a three-phase current power parameter measurement unit, an A/D conversion unit, an environmental temperature and humidity measuring unit and a central processing unit. An analog quantity input terminal of the A/D conversion unit is connected with the three-phase current power parameter measurement unit; and the central processing unit is connected with a key input unit and is connected to a network by a communication unit. Moreover, the early warning apparatus is characterized in that a digital quantity output terminal of the A/D conversion unit and the environmental temperature and humidity measuring unit are connected to the same central processing unit; and the output terminal of the central processing unit is connected with an early warning unit. According to the scheme, the early warning apparatus that is designed based on the latest single-chip microcomputer technology and the latest network communication technology has the advantages of good data processing capability, high measuring precision, high intelligent degree, high security and reliability, compact structure and stable work and the like; and the early warning apparatus has the remote communication digital interface, so that wiring is simple and the apparatus can be used conveniently.

Description

A kind of switch cubicle safe operation prior-warning device
Technical field
The utility model relates to a kind of switch cubicle safe operation prior-warning device, and particularly a kind of running in 35kV and following power switch cabinet, meets the power equipment state monitoring of intelligent grid requirement.
Background technology
In existing 35kV and following power switch cabinet, conventionally adopt pointer instrument or digital instrument that parameters of electric power is gathered and measured, also can adopt temperature and humidity controller to regulate in-cabinet temperature simultaneously; Electric instrument and Temperature and Humidity Control equipment need to meet following requirement:
1, measure electric current, voltage, meritorious, idle, power factor, harmonic wave and frequency parameters of electric power;
2, measure humiture in switch board;
3, meet on a measurement parameter distant place and send function;
To sum up said, to power switch cabinet, electric instrument and humiture collection device need to be installed to meet: the load current of power switch cabinet and voltage, meritorious, idle, power factor, harmonic wave and frequency are carried out to Real-Time Monitoring, and the humiture in switch cubicle is carried out to Real-Time Monitoring; The interface that possesses institute's image data and remote monitoring.
As shown in Figures 1 and 2, in existing switch cubicle electric current and voltage, meritorious, idle, power factor, harmonic wave and frequency and cabinet, the Real-Time Monitoring of humiture adopts two independently device is isolated and gathers, and does not have associatedly to differentiate between each parameter.The subject matter of above-mentioned existing electric instrument and temperature and humidity controller is:
1, to switch cubicle operational factor is isolated, gather, uncomprehensive judgement, is difficult to the early warning of switch cubicle abnormal operating condition;
2, parameters of electric power and humiture parameter are gathered by distinct device, and cost is high;
3, function is disperseed, and number of devices is many, and wiring construction is complicated.
Summary of the invention
The purpose of this utility model is to provide high, the with low cost and simple switch cubicle safe operation of the engineering construction monitoring device of a kind of intelligent degree.
In order to achieve the above object, the technical solution of the utility model has been to provide a kind of switch cubicle safe operation prior-warning device, comprise three-phase current electric parameter measurement unit, A/D converting unit, ambient temperature and humidity measuring unit and CPU (central processing unit), the analog input end of A/D converting unit connects three-phase current electric parameter measurement unit, CPU (central processing unit) connects key-press input unit, CPU (central processing unit) is also by communication unit access network, it is characterized in that: digital output end and the ambient temperature and humidity measuring unit of A/D converting unit connect same CPU (central processing unit), the output terminal of CPU (central processing unit) is connected with prewarning unit.
Preferably, also comprise for temperature and humidity measurement unit in the cabinet of the temperature in measuring switch cabinet and humidity, in cabinet, temperature and humidity measurement unit is connected with described CPU (central processing unit).
Preferably, described CPU (central processing unit) also connects LED display unit.
The switch cubicle safe operation prior-warning device that the utility model provides, adopt up-to-date singlechip technology, network communications technology and designing, have that data-handling capacity is strong, measuring accuracy is high, intelligent degree is high, safe, reliability is high, compact conformation, steady operation and other merits, meanwhile, possess the digital interface of distant place communication, wiring is simple, easy to use.
Accompanying drawing explanation
Fig. 1 is the principle schematic of digital power instrument;
Fig. 2 is the principle schematic of temperature and humidity controller;
Fig. 3 is the principle schematic of switch cubicle safe operation prior-warning device of the present utility model.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
As shown in Figure 3, a kind of switch cubicle safe operation prior-warning device that the utility model provides, comprises temperature and humidity measurement unit, central processing unit CPU, key-press input unit, communication unit, LED display unit and prewarning unit in three-phase current electric parameter measurement unit, A/D converting unit, ambient temperature and humidity measuring unit, cabinet.
Three-phase current electric parameter measurement unit by using electric current, voltage transformer (VT) convert current and voltage signals, collect parameters of electric power, by A/D converting unit, change analog quantity into digital quantity again, by central processing unit CPU, digital quantity is carried out acquisition process and result is sent into LED display unit.Central processing unit CPU also by internal integrate circuit bus (for example: the real-time measuring data that IIC) temperature and humidity measurement unit obtains in read loop environmental temperature and humidity measuring unit and cabinet, and send into the temperature of LED display unit different monitoring points.
In the present embodiment, the parameters of electric power collecting, temperature and humidity can deposit in jumbo storer (for example: FLASH), these data can be by LED display unit timing wheel aobvious or fixed parameter of leafing through as required respective page after aobvious check.Central processing unit CPU also utilizes gathered temperature and electric current comprehensively to judge, to switch cubicle, whether safe operation judges, and produces alarm by prewarning unit.Meanwhile, also result can be sent into communication unit and carry out network remote-transmission.Communication unit can adopt 485 communication interfaces, by the data after processing according to certain stipulations via giving main station monitoring device on network.
Switch cubicle safe operation prior-warning device of the present utility model, employing based on microsystem, by the collection to analog quantitys such as environment temperature, monitoring point temperature and load currents, by central processing unit CPU, carry out Dynamic comparison, comprehensive judgement and processing, utilize software logic module to realize the judgement whether switch cubicle runs on safe condition.Device is provided with digital remote interface and data are checked on the spot man-machine interface.
The feature of switch cubicle safe operation prior-warning device of the present utility model:
1, adopt digital display mode, parameters of electric power and humiture parameter have the aobvious and fixed aobvious two kinds of patterns of freely switching of taking turns.
2, parameters of electric power and the integrated collection of humiture parameter, comprehensively judgement, prediction switch cubicle abnormal operating condition.
3, parameters of electric power and humiture parameter are concentrated and are gathered by single microprocessor, reduce manufacturing cost, simplify engineering construction.
4, wiring is simple, safe and reliable: by the functional shift being completed respectively by a plurality of equipment for to be completed by single high-performance microprocessor.Save engineering wiring simple, reliability improves.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall within the scope of claimed the utility model, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (3)

1. a switch cubicle safe operation prior-warning device, comprise three-phase current electric parameter measurement unit, A/D converting unit, ambient temperature and humidity measuring unit and CPU (central processing unit), the analog input end of A/D converting unit connects three-phase current electric parameter measurement unit, CPU (central processing unit) connects key-press input unit, CPU (central processing unit) is also by communication unit access network, it is characterized in that: digital output end and the ambient temperature and humidity measuring unit of A/D converting unit connect same CPU (central processing unit), and the output terminal of CPU (central processing unit) is connected with prewarning unit.
2. a kind of switch cubicle safe operation prior-warning device as claimed in claim 1, is characterized in that: also comprise for temperature and humidity measurement unit in the cabinet of the temperature in measuring switch cabinet and humidity, in cabinet, temperature and humidity measurement unit is connected with described CPU (central processing unit).
3. a kind of switch cubicle safe operation prior-warning device as claimed in claim 1, is characterized in that: described CPU (central processing unit) also connects LED display unit.
CN201320124192.8U 2013-03-18 2013-03-18 Early warning apparatus for secure operation of switch cabinet Expired - Fee Related CN203455024U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320124192.8U CN203455024U (en) 2013-03-18 2013-03-18 Early warning apparatus for secure operation of switch cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320124192.8U CN203455024U (en) 2013-03-18 2013-03-18 Early warning apparatus for secure operation of switch cabinet

Publications (1)

Publication Number Publication Date
CN203455024U true CN203455024U (en) 2014-02-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320124192.8U Expired - Fee Related CN203455024U (en) 2013-03-18 2013-03-18 Early warning apparatus for secure operation of switch cabinet

Country Status (1)

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CN (1) CN203455024U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103900636A (en) * 2014-03-18 2014-07-02 扬州科宇电力有限公司 Online insulation and temperature monitoring system used for 12kV solid insulated switch cabinet
CN105181026A (en) * 2015-10-29 2015-12-23 国网山东高唐县供电公司 Device for displaying statuses of electrical cabinets

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103900636A (en) * 2014-03-18 2014-07-02 扬州科宇电力有限公司 Online insulation and temperature monitoring system used for 12kV solid insulated switch cabinet
CN103900636B (en) * 2014-03-18 2017-02-08 扬州科宇电力有限公司 Online insulation and temperature monitoring system used for 12kV solid insulated switch cabinet
CN105181026A (en) * 2015-10-29 2015-12-23 国网山东高唐县供电公司 Device for displaying statuses of electrical cabinets
CN105181026B (en) * 2015-10-29 2016-11-23 国网山东省电力公司高唐县供电公司 Regulator cubicle

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140226

Termination date: 20150318

EXPY Termination of patent right or utility model