CN206135395U - Protection device of transformer - Google Patents

Protection device of transformer Download PDF

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Publication number
CN206135395U
CN206135395U CN201621211353.7U CN201621211353U CN206135395U CN 206135395 U CN206135395 U CN 206135395U CN 201621211353 U CN201621211353 U CN 201621211353U CN 206135395 U CN206135395 U CN 206135395U
Authority
CN
China
Prior art keywords
resistance
electric capacity
audion
transformer
connects
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.)
Expired - Fee Related
Application number
CN201621211353.7U
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Chinese (zh)
Inventor
张江林
谢晓娜
张雪原
蒋涛
庄慧敏
樊昌元
李代伟
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Chengdu University of Information Technology
Original Assignee
Chengdu University of Information Technology
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 Chengdu University of Information Technology filed Critical Chengdu University of Information Technology
Priority to CN201621211353.7U priority Critical patent/CN206135395U/en
Application granted granted Critical
Publication of CN206135395U publication Critical patent/CN206135395U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a protection device of transformer, including modulate circuit and the control chip who connects gradually, the transformer is connected with modulate circuit and control chip respectively, the modulate circuit includes triode, first diode D1, resistance, electric capacity, power end, earthing terminal, input and output, the triode includes first triode Q1 and second triode Q2, resistance includes first resistance R1, second resistance R2, third resistance R3, fourth resistance R4 and the 5th resistance R5, electric capacity includes first electric capacity C1 and second electric capacity C2. The utility model discloses add the modulate circuit and control chip constitutes protection device of transformer in the transformer periphery, this modulate circuit uses the triode as the core device, adds a small amount of resistance, electric capacity can be realized sending the current signal of transformer for control chip through after nursing one's health. If the signal that this process was taked care of exceedes 2.5 volts, the then operating condition of real -time control of control chip meeting and change transformer.

Description

Protection equipment for transformer
Technical field
This utility model is related to field transformer, specifically, is to be related to protection equipment for transformer.
Background technology
The characteristics of modern high-power transformer is that capacity is big, electric pressure is high and expensive and maintenance difficult.Large-scale change Status of the depressor in power system is extremely important, and its safe operation is directly connected to the stable operation of power system, once When power transformer hinders for some reason and damages, the loss for causing will be very big, and the normal operation to system will bring serious Affect.Existing protection device stability itself is poor, and device is numerous and diverse, is unfavorable for the maintenance and debugging in later stage.
Utility model content
To overcome the problems referred to above of the prior art, this utility model to provide a kind of transformation for designing ingenious, simple structure Device protection device.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Protection equipment for transformer, including the modulate circuit and control chip that are sequentially connected, the transformator respectively with conditioning Circuit and control chip connection, the modulate circuit include audion, the first diode D1, resistance, electric capacity, power end, ground connection End, input input and outfan output;The audion includes the first audion Q1 and the second audion Q2;The electricity Resistance includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4 and the 5th resistance R5;The electric capacity includes One electric capacity C1 and the second electric capacity C2;The colelctor electrode of the first audion Q1 connects the power end by first resistor R1, sends out Emitter-base bandgap grading connects the anode of the first diode D1 by second resistance R2, and base stage is by 3rd resistor R3 connection the described 2nd 3 The emitter stage of pole pipe Q2;The negative electrode connection earth terminal of the first diode D1;The emitter stage of the second audion Q1 passes through 4th resistance R4 connects power end, connects base stage by the first electric capacity C1;The colelctor electrode of the second audion Q1 passes through second Electric capacity C2 connects earth terminal, and base stage connects earth terminal by the 5th resistance R5;The input input connects the one or three pole The emitter stage of pipe Q1;The outfan output connects the base stage of the second audion Q2.
Specifically, the first audion Q1 is PNP pipe, and the second audion Q2 is that NPN is managed.
Preferably, the first resistor R1 resistance be 10K ohms, second resistance R2 resistance be 20K ohms, 3rd resistor R3 resistances are 5.5K ohms, and the 4th resistance R4 resistances are 30K ohms, and the 5th resistance R5 resistances are 560 ohm.
Preferably, the first electric capacity C1 is 0.01uF, the second electric capacity C2 is 100pF.
Specifically, the control chip is LPC2101FBD48.
Compared with prior art, this utility model has the advantages that:
This utility model sets up modulate circuit in transformator periphery and control chip constitutes protection equipment for transformer;The conditioning Circuit adds a small amount of resistance, electric capacity and is capable of achieving the current signal of transformator by conditioning with audion as core devices After be sent to control chip.If this passes through the signal of conditioning more than 2.5 volts, control chip can be controlled in real time and change change The working condition of depressor.This utility model realizes the real-time monitoring to transformator working condition, serves protection transformator Effect, and device is few, is easy to the maintenance and debugging in later stage.
Description of the drawings
Fig. 1 is system block diagram of the present utility model.
Fig. 2 is the connection diagram of modulate circuit in this utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, and embodiment of the present utility model includes But it is not limited to the following example.
Embodiment
As shown in Figure 1 to Figure 2, protection equipment for transformer, including the modulate circuit and control chip that are sequentially connected, the tune Reason circuit includes audion, the first diode D1, resistance, electric capacity, power end, earth terminal, input input and outfan output;The audion includes the first audion Q1 and the second audion Q2;The resistance includes first resistor R1, second electric Resistance R2,3rd resistor R3, the 4th resistance R4 and the 5th resistance R5;The electric capacity includes the first electric capacity C1 and the second electric capacity C2;Institute The colelctor electrode for stating the first audion Q1 connects the power end by first resistor R1, and emitter stage connects institute by second resistance R2 The anode of the first diode D1 is stated, base stage connects the emitter stage of the second audion Q2 by 3rd resistor R3;Described first The negative electrode connection earth terminal of diode D1;The emitter stage of the second audion Q1 connects power end by the 4th resistance R4, leads to Cross the first electric capacity C1 connection base stages;The colelctor electrode of the second audion Q1 connects earth terminal by the second electric capacity C2, and base stage is led to Cross the 5th resistance R5 connection earth terminals;The input input connects the emitter stage of the first audion Q1;The outfan Output connects the base stage of the second audion Q2.
Specifically, the first audion Q1 is PNP pipe, and the second audion Q2 is that NPN is managed.
Preferably, the first resistor R1 resistance be 10K ohms, second resistance R2 resistance be 20K ohms, 3rd resistor R3 resistances are 5.5K ohms, and the 4th resistance R4 resistances are 30K ohms, and the 5th resistance R5 resistances are 560 ohm.
Preferably, the first electric capacity C1 is 0.01uF, the second electric capacity C2 is 100pF.
Specifically, the control chip is LPC2101FBD48.This utility model sets up modulate circuit in transformator periphery Protection equipment for transformer is constituted with control chip;The modulate circuit adds a small amount of resistance, electric capacity with audion as core devices It is capable of achieving for the current signal of transformator to be sent to control chip after conditioning.If the signal of the process conditioning exceedes 2.5 volts, then control chip can control the working condition of transformator in real time.This utility model is realized to transformator working condition Real-time monitoring, serve protection transformator effect.
Above-described embodiment only preferred embodiment of the present utility model, the not restriction to this utility model protection domain, In every case design principle of the present utility model, and the change for carrying out non-creativeness work on this basis and making are adopted, all should Belong within protection domain of the present utility model.

Claims (5)

1. protection equipment for transformer, including the modulate circuit and control chip that are sequentially connected, it is characterised in that the modulate circuit Including audion, the first diode D1, resistance, electric capacity, power end, earth terminal, input input and outfan output;Institute Stating audion includes the first audion Q1 and the second audion Q2;The resistance include first resistor R1, second resistance R2, the 3rd Resistance R3, the 4th resistance R4 and the 5th resistance R5;The electric capacity includes the first electric capacity C1 and the second electric capacity C2;
The colelctor electrode of the first audion Q1 connects the power end by first resistor R1, and emitter stage passes through second resistance R2 Connect the anode of the first diode D1, base stage connects the emitter stage of the second audion Q2 by 3rd resistor R3;Institute State the negative electrode connection earth terminal of the first diode D1;
The emitter stage of the second audion Q1 connects power end by the 4th resistance R4, connects base stage by the first electric capacity C1; The colelctor electrode of the second audion Q1 connects earth terminal by the second electric capacity C2, and base stage is by the 5th resistance R5 connection ground connection End;
The input input connects the emitter stage of the first audion Q1;The outfan output connects the two or three pole The base stage of pipe Q2;The outfan output connects the control chip.
2. protection equipment for transformer according to claim 1, it is characterised in that the first audion Q1 is PNP pipe, institute State the second audion Q2 and manage for NPN.
3. protection equipment for transformer according to claim 2, it is characterised in that the first resistor R1 resistance is 10K Europe Nurse, second resistance R2 resistance are 20K ohms, and 3rd resistor R3 resistance is 5.5K ohms, and the 4th resistance R4 resistances are 30K ohms, 5th resistance R5 resistances are 560 ohm.
4. protection equipment for transformer according to claim 3, it is characterised in that the first electric capacity C1 is 0.01uF, institute The second electric capacity C2 is stated for 100pF.
5. protection equipment for transformer according to claim 4, it is characterised in that the control chip is LPC2101FBD48。
CN201621211353.7U 2016-11-10 2016-11-10 Protection device of transformer Expired - Fee Related CN206135395U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621211353.7U CN206135395U (en) 2016-11-10 2016-11-10 Protection device of transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621211353.7U CN206135395U (en) 2016-11-10 2016-11-10 Protection device of transformer

Publications (1)

Publication Number Publication Date
CN206135395U true CN206135395U (en) 2017-04-26

Family

ID=58577433

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621211353.7U Expired - Fee Related CN206135395U (en) 2016-11-10 2016-11-10 Protection device of transformer

Country Status (1)

Country Link
CN (1) CN206135395U (en)

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Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170426

Termination date: 20171110

CF01 Termination of patent right due to non-payment of annual fee