CN201435602Y

CN201435602Y - Digitized arc suppression coil device

Info

Publication number: CN201435602Y
Application number: CN2009200779496U
Authority: CN
Inventors: 李刚; 魏立新; 朱长明; 吴宝明
Original assignee: Siyuan Electric Co Ltd
Current assignee: Siyuan Electric Co Ltd
Priority date: 2009-07-07
Filing date: 2009-07-07
Publication date: 2010-03-31
Anticipated expiration: 2019-07-07

Abstract

The utility model discloses a digitized arc suppression coil device, wherein, the first input end of a voltage transformer is connected with the upper end of an arc suppression coil, and the second input end thereof is grounded; the lower end of a current transformer and the lower end of the arc suppression coil are connected in series and grounded; the secondary side output end of the voltage transformer, the secondary side output end of the current transformer and the output end of a tuning device are connected with the signal input module of an intelligent conversion module; and the information output module of the intelligent conversion module is connected with the input end of an optical interface module. The utility model delivers a networked and intelligent air suppression arc, complies with the IEC 61850 standard, and meets the requirements for digitizing transformer stations. The utility model can meet the need to intelligentize arc suppression coil equipment in an increasingnumber of projects concerning the construction of digitized transformer stations, and has excellent value in application and popularization.

Description

A kind of digital arc suppression coil device

Technical field:

The utility model relates to the arc suppression coil in the power network neutral point grounding system, is specifically related to a kind of arc suppression coil device of realization digitizing function of the IEC of meeting 61850 standards.

Background technology:

The digital transformer substation technology is the innovation of revolution for traditional transformer station, and along with the ripe and development of every technology, the digital transformer substation technology will become the direction of following automation of transformation substations technical development.IEC 61850 " transformer station's Networks and Communications agreement " standard (hereinafter to be referred as IEC 61850) is the core support of digital transformer substation technology.Digital transformer substation is made of intelligent primary equipment and networked secondary device, and wherein, the intelligent primary equipment that meets IEC 61850 standards is the important foundation that realizes digital transformer substation.

Arc suppression coil is used for the power network neutral point grounding system, when power distribution network generation single phase ground fault, can extinguish ground arc rapidly, suppress ground connection arc overvoltage and ferro-resonance over-voltage, electrical network can be operated with failure 2 hours, significantly reduce frequency of power cut, improved power supply reliability.Arc suppression coil is the visual plant in the transformer station, and therefore in digital transformer substation, digital arc suppression coil belongs to the category of intelligent primary equipment.

Traditional arc suppression coil system generally is made of primary equipment, secondary device two parts at present, once partly comprise arc suppression coil and inductance tuner thereof, voltage transformer (PT), current transformer (CT) etc., the secondary part mainly is the microcomputer automatic tuning controller.Connect transmission voltage, electric current, control signal etc. between primary equipment and the secondary device by a large amount of cables.

According to the designing requirement of digital transformer substation, the arc suppression coil primary equipment must be realized intellectuality, adopts the fiberize transmission, based on Ethernet communication, observes the IEC61850 communication specification between primary equipment and the secondary device.Intelligent primary equipment can be debugged fully in factory and finish, and the work behind the scene only is to connect optical cable, realizes " work of maximization factory minimizes work on the spot ", and work on the spot is simple and quality is higher, and operation maintenance is also simpler.Digital transformer substation has entered into the engineering construction stage, and the correlation technique and the product of the digital arc suppression coil that meets IEC 61850 standards are not arranged at present as yet.

The utility model content:

The utility model does not meet the problem of IEC61850 communication specification at the intelligence communication of existing arc suppression coil, and provide a kind of digitized arc suppression coil device, its message transmission realizes digitlization, adopt optical fiber to replace all signals and control cable, all electric parameters are through after inner collection and handling, transfer the network format output of IEC61850 standard to, satisfy the needs of current digitlization transformer substation construction.

In order to achieve the above object, the utility model adopts following technical scheme:

A kind of digital arc suppression coil device, this device comprises arc suppression coil, tuner, voltage transformer, current transformer, described device also comprises the intelligent conversion module, the optical interface module, described intelligent conversion module comprises reception information and will receive the signal input module that information translation becomes digital signal, input signal handled with implement device protect, the signal processing module of observing and controlling and event notice function, and the output information form is packaged into the message output module of conformance with standard communication format, described signal input module and message output module communicate to connect with signal processing module respectively; The first input end of described voltage transformer connects the upper end of arc suppression coil, second input end grounding; Described current transformer is connected in series with the lower end of arc suppression coil and ground connection; The output of the secondary side output of described voltage transformer, the secondary side output of current transformer, tuner all with the intelligent conversion module in signal input module join; The message output module of described intelligent conversion module connects the input of optical interface module.

The output of described optical interface module is an optical fiber interface.

Described tuner and intelligent conversion module are installed on the arc suppression coil body.

Obtain the utlity model has following characteristics according to technique scheme:

(1) adopts near realizing digitized scheme on the primary equipment body, possessed the ability of digital signal output, and satisfy the requirement of IEC61850 standard;

(2) adopt the medium of optical fiber, support the Ethernet information format, support every data, services of IEC 61850 standard codes, satisfy the construction requirements of digital transformer substation as the signal transmission;

(3) adopt integrated design, primary equipment and secondary circuit are combined closely, can do type approval test simultaneously, guaranteed performance index and reliability, realized intelligent primary equipment truly.

(4) adopt Optical Fiber Transmission digital information, replaced traditional cable and connected and analog signal transmission; The utility model adopts the mode of the dummy contact of corresponding module control, replaces traditional hard contact remote signalling mode.

What (5) adopt is the unified IEC 61850 Standards Codes definition in the whole world, and in digital transformer substation, there is not the inconsistent situation of stipulations in plug and play.

While the utility model network enabled function, support output multiple standards information format:

A. the information format that meets IEC 61850-9-1 " particular communication service mapping (SCSM) is by the sampled value of the point-to-point serial communication link of unidirectional multichannel " standard definition.

B, meet the information format of IEC 61850-9-2 " particular communication service mapping (SCSM) is by sampled value of ISO/IEC 8802-3 " standard definition.

C, meet the information format of IEC 60044-7 " electronic type voltage transformer " and IEC 60044-8 " electronic current mutual inductor " standard definition.

Description of drawings:

Further specify the utility model below in conjunction with the drawings and specific embodiments.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the logical schematic of intelligent conversion module.

Embodiment:

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Referring to as Fig. 1, digital arc suppression coil device provided by the utility model is in order to meet IEC61850 standard traffic form, and it mainly is made up of arc suppression coil 1, tuner 2, voltage transformer 3, current transformer 4, intelligent conversion module 5, optical interface module 6.

Arc suppression coil 1 in the utility model, its effect is identical with general arc suppression coil.When electric power system generation single phase ground fault, arc suppression coil can extinguish ground arc rapidly, suppresses ground connection arc overvoltage and ferro-resonance over-voltage, reduces frequency of power cut, improves power supply reliability.

Tuner 2 is used to regulate the inductance value of arc suppression coil 1.

Voltage transformer 3 is used to measure the magnitude of voltage at arc suppression coil 1 two ends.

Current transformer 4 is used to measure the current value by arc suppression coil 1.

It can carry out digitized processing with the signal of input intelligent conversion module 5, is encapsulated as the information format that meets IEC 61850 standards and exports.

Optical interface module 6 mainly is that standard signal is converted to light signal output, transmits by fiber medium.

Whole device syndeton as shown in Figure 1, input of voltage transformer 3 connects the upper end of arc suppression coil 1, another input end grounding of voltage transformer 3; Current transformer 4 is installed in series between the lower end and earth point of arc suppression coil 1; Tuner 2 is installed on arc suppression coil 1 body; The output of the secondary side output of voltage transformer 3, the secondary side output of current transformer 4, tuner 2 all connects into the observing and controlling input of intelligent conversion module 5, and intelligent conversion module 5 is installed on arc suppression coil 1 body; The input of optical interface module 6 is connected in the output of intelligent conversion module 5.

In order to realize utilizing optical fiber to communicate, the output of optical interface module 6 is an optical fiber interface.

The utility model is placed in intelligent conversion module 5 and tuner 2 on arc suppression coil 1 body, integrated design that can implement device, primary equipment and secondary circuit are combined closely, can do type approval test simultaneously, guarantee performance index and reliability, realized intelligent primary equipment truly.

Intelligent conversion module 5 is the core of whole device simultaneously, is used for the signal processing to whole device, with the functions such as protection, observing and controlling and event notice of implement device.Its structure mainly is made up of signal input module 501, message output module 502, signal processing module 503 as shown in Figure 2.Signal input module 501 and message output module 502 communicate to connect with signal processing module 503 respectively, realize reception, the processing to signal, a processing procedure of transmission.

Wherein signal input module 501 is the observing and controlling input of intelligent conversion module 5, mainly is the input signal with processes voltage instrument transformer 3, current transformer 4, tuner 2, is translated into the digital signal that CPU can be discerned and handle.

The digital signal that signal processing module 503 received signal input modules 501 are handled well; handle according to concrete signal; and corresponding parts are sent control information; the protection of implement device, observing and controlling and event notice function; message output module 502 is delivered in these control informations, sends after being handled by it again.

Message output module 502 is the output of intelligent conversion module 5, its mainly be the data encapsulation that will handle well for meeting IEC 61850 reference formats, by optical interface module 6 data are sent then.

When the utility model that obtains according to technique scheme specifically moves, the electric power system neutral point is installed and run on to arc suppression coil 1, there is certain voltage U in the two ends of arc suppression coil 1, flowing through arc suppression coil 1 has certain electric current I, and the reactance value of tuner 2 control arc suppression coils 1 is at a certain position L1;

Intelligent conversion module 5 is by the measuring-signal of voltage transformer 3 acquisition voltage U, and intelligent conversion module 5 is by the measuring-signal of current transformer 4 acquisition electric current I, and intelligent conversion module 5 obtains the reactance value L1 of arc suppression coil 1 by tuner 2.

Intelligent conversion module 5 is encapsulated as the information that meets IEC 61850 standards with above-mentioned signal after treatment, outputs to the process layer network of digital transformer substation by the optical interface module by optical fiber, is received by bay device.The information of uploading according to intelligent conversion module 5, transformer station's bay device can be assigned control command to the digital arc suppression coil system by the process layer network, after intelligent conversion module 5 receives instruction, after corresponding the processing, be sent to tuner 2, tuner 2 is carried out according to corresponding instruction.

The utility model is realized the networked and intelligent of arc suppression coil, and meets IEC 61850 standards, satisfies the requirement of digital transformer substation.The utility model can satisfy in the digital transformer substation engineering construction of carrying out day by day, and the intellectuality needs to arc suppression coil equipment have good practical and popularizing value.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1, a kind of digital arc suppression coil device, this device comprises arc suppression coil, tuner, voltage transformer, current transformer, it is characterized in that, described device also comprises the intelligent conversion module, the optical interface module, described intelligent conversion module comprises reception information and will receive the signal input module that information translation becomes digital signal, input signal handled with implement device protect, the signal processing module of observing and controlling and event notice function, and the output information form is packaged into the message output module of conformance with standard communication format, described signal input module and message output module communicate to connect with signal processing module respectively; The first input end of described voltage transformer connects the upper end of arc suppression coil, second input end grounding; Described current transformer is connected in series with the lower end of arc suppression coil and ground connection; The output of the secondary side output of described voltage transformer, the secondary side output of current transformer, tuner all with the intelligent conversion module in signal input module join; The message output module of described intelligent conversion module connects the input of optical interface module.

2, to remove 1 described a kind of digital arc suppression coil device according to right, it is characterized in that the output of described optical interface module is an optical fiber interface.

3, to remove 1 described a kind of digital arc suppression coil device according to right, it is characterized in that described tuner and intelligent conversion module are installed on the arc suppression coil body.