CN206161727U - Zero ground voltage measurement device of power supply system - Google Patents

Zero ground voltage measurement device of power supply system Download PDF

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Publication number
CN206161727U
CN206161727U CN201620989508.3U CN201620989508U CN206161727U CN 206161727 U CN206161727 U CN 206161727U CN 201620989508 U CN201620989508 U CN 201620989508U CN 206161727 U CN206161727 U CN 206161727U
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CN
China
Prior art keywords
voltage
resistance
diode
stabiliser tube
relay
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.)
Withdrawn - After Issue
Application number
CN201620989508.3U
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Chinese (zh)
Inventor
陈浩
龚立业
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.)
Tianjin Baili Electronic Co Ltd
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Tianjin Baili Electronic 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
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Application filed by Tianjin Baili Electronic Co Ltd filed Critical Tianjin Baili Electronic Co Ltd
Priority to CN201620989508.3U priority Critical patent/CN206161727U/en
Application granted granted Critical
Publication of CN206161727U publication Critical patent/CN206161727U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a zero ground voltage measurement device of power supply system. It is including relay control circuit and main circuit, the main circuit comprises high pressure and low pressure measuring circuit, the high voltage measurement circuit comprises with high -pressure sampling return circuit two series resistance, the low pressure measuring circuit is established ties by four resistance, open state relay and low pressure sampling return circuit constitutes, has wherein used a plurality of stabilivolts and diode pair circuit protection, prevents that low voltage jump from causing the damage of components and parts for the high voltage. The utility model is simple in operation, be equipped with the protection circuit, can both ensure high grade of precision under the condition of low -voltage and high voltage, can not damage measuring equipment, have still simultaneously that the registration is readable, the precision is high, can save the result, the warning that exceeds the real value, can modify characteristics such as warning value, safe and reliable.

Description

Electric power system part-loading goods measurement apparatus
Technical field
The utility model belongs to a kind of voltage measuring apparatus, and work Zero-liue in more particularly to a kind of detection electric power system The electric power system part-loading goods measurement apparatus of voltage drop in work.
Background technology
The reason such as threephase load imbalance, earth short can all produce part-loading goods drop in electric power system.Part-loading goods can To reflect the stability of electric power system, part-loading goods in work are excessive to be easy to produce interference to communicating and controlling, and makes to set Standby maloperation, or even communication and control device are directly damaged, cause the loss of the person and property.Additionally, user is to electric power system Quality also can require, therefore, detect work in part-loading goods drop it is very necessary.At present measuring method is mainly by numeral Formula universal meter, digital oscilloscope and common part-loading goods detector are measured.Operate not when universal meter and oscilloscope measurement Just, manual operation is needed, it is impossible to accomplish to detect constantly, while occur easily to cause danger during zero ground short circuit, and common part-loading goods Detector precision when there is big voltage occurs severe deviations, and there is no protection circuit, and easily detector is caused to damage Evil.
The content of the invention
For technical problem present in solution known technology, providing one kind can strengthen practicality and safety to the utility model The measuring electric power system part-loading goods measurement apparatus of high-precision intelligent of property.
The utility model is adopted the technical scheme that to solve technical problem present in known technology:12v direct currents Industrial computer is connected to as power supply, and+12v is also connected with the side of a relay (J), relay (J) the opposite side difference It is connected to the colelctor electrode of optocoupler (U1) outlet side and the colelctor electrode of a triode (VT), the transmitting of optocoupler (U1) outlet side Pole is connected to the base stage of the triode (VT), and the positive pole of optocoupler (U1) input side is connected to the I/O port of the industrial computer, The negative pole of optocoupler (U1) input side is connected to the side of first resistor (R1), the opposite side connection of the first resistor (R1) To ground (GND), the emitter stage of the triode (VT) be connected to (GND);Ground (GND) is also respectively connected to the 4th resistance (R4) One end, the tenth diode (DZ10) negative pole, the 8th diode (DZ8) positive pole, the 6th diode (DZ6) negative pole, the 3rd diode (DZ3) positive pole, the 7th resistance (R7) one end, diode (D) positive pole, electric capacity (C) one end and input terminal (A2), the described 4th Resistance (R4) other end is connected respectively to the normal opened contact side of the relay (J) and 3rd resistor (R3) one end, it is described after The normal opened contact opposite side of electrical equipment (J) is connected to the 8th resistance (R8) one end, and 3rd resistor (R3) other end connects respectively To second resistance (R2) one end and the 9th voltage-stabiliser tube (DZ9) negative pole and the 7th voltage-stabiliser tube (DZ7) positive pole, the 9th voltage-stabiliser tube (DZ9) Positive pole is connected to the tenth diode (DZ10) positive pole, and the 7th voltage-stabiliser tube (D7) negative pole is connected to the 8th diode (DZ8) negative pole, second resistance (R2) other end is connected respectively to the 4th voltage-stabiliser tube (DZ4) negative pole, the first voltage-stabiliser tube (DZ1) The side of another normal opened contact of positive pole and the relay (J), it is steady that the 4th voltage-stabiliser tube (DZ4) positive pole is connected to the 5th Pressure pipe (DZ5) negative pole, the 5th voltage-stabiliser tube (DZ5) positive pole is connected to the 6th diode (DZ6) positive pole, the first voltage-stabiliser tube (DZ1) negative pole is connected to the second voltage-stabiliser tube (DZ2) positive pole, and the second voltage-stabiliser tube (DZ2) negative pole is connected to the three or two pole Pipe (DZ3) negative pole, the opposite side of another normal opened contact of the relay (J) is connected to the 5th resistance (R5) one end, described 5th resistance (R5) other end is connected respectively to one end of input terminal (A1) and the 6th resistance (R6), the 6th resistance (R6) The other end be connected respectively to the normally closed contact side and the 7th resistance (R7) one end of the relay (J), the relay (J) Normally closed contact opposite side be connected to the 8th resistance (R8) one end, the 8th resistance (R8) other end is connected respectively to described two Pole pipe (D) negative pole, the electric capacity (C) other end and thief hatch (AD).
The utility model has the advantages and positive effects that:It is simple to operate, protection circuit is provided with, in low-voltage and height electricity High accuracy grade can be ensured in the case of pressure, measuring apparatus will not be damaged, at the same also have that registration is readable, high precision, can Storage result, the warning that overflows, can change alarming value, it is safe and reliable the features such as.
Description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is control flow chart of the present utility model.
Specific embodiment
For the content of the invention of the present utility model, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinated Accompanying drawing describes in detail as follows:
As shown in Figure 1:12v direct currents are connected to industrial computer as power supply, and+12v is also connected with the one of a relay J Side, relay J opposite sides are connected respectively to the colelctor electrode of optocoupler U1 outlet sides and the colelctor electrode of triode VT, optocoupler U1 outlet sides Emitter stage be connected to the base stage of triode VT, the positive pole of optocoupler U1 input sides is connected to the I/O port of industrial computer, optocoupler U1 inputs The negative pole of side is connected to the side of resistance R1, and the opposite side of resistance R1 is connected to ground GND, and the emitter stage of triode VT is connected to ground GND;Ground GND be also respectively connected to resistance R4 one end, diode DZ10 negative poles, diode DZ8 positive poles, diode DZ6 negative poles, two Pole pipe DZ3 positive pole, resistance R7 one end, diode D positive poles, electric capacity C one end and input terminal A2, the resistance R4 other ends connect respectively The normal opened contact side and resistance R3 one end of relay J are connected to, the normal opened contact opposite side of relay J is connected to resistance R8 mono- End, the resistance R3 other ends are connected respectively to resistance R2 one end and voltage-stabiliser tube DZ9 negative poles and voltage-stabiliser tube DZ7 positive poles, and voltage-stabiliser tube DZ9 is just Pole is connected to diode DZ10 positive poles, and voltage-stabiliser tube D7 negative poles are connected to diode DZ8 negative poles, and the resistance R2 other ends are connected respectively to The side of another normal opened contact of voltage-stabiliser tube DZ4 negative poles, voltage-stabiliser tube DZ1 positive poles and relay J, the connection of voltage-stabiliser tube DZ4 positive poles To voltage-stabiliser tube DZ5 negative poles, voltage-stabiliser tube DZ5 positive poles are connected to diode DZ) positive pole, voltage-stabiliser tube DZ1 negative poles are connected to voltage-stabiliser tube DZ2 Positive pole, voltage-stabiliser tube DZ2 negative poles are connected to diode DZ3 negative poles, and the opposite side of another normal opened contact of relay J is connected to electricity Resistance R5 one end, the resistance R5 other ends are connected respectively to one end of input terminal A1 and resistance R6, and the other end of resistance R6 connects respectively The normally closed contact side and resistance R7 one end of relay J are connected to, the normally closed contact opposite side of relay J is connected to resistance R8 mono- End, the resistance R8 other ends are connected respectively to diode D negative poles, the electric capacity C other ends and thief hatch AD.
Under low-voltage state, if zero line break or occur other failures cause produce high voltage after, by input terminal A1 Into high voltage will be depressured through voltage-stabiliser tube DZ1, DZ2 or voltage-stabiliser tube DZ4, DZ5, diode DZ3 and diode DZ6 Effect be to prevent reverse breakdown, it is ensured that the alternating current of entrance has the path of step-down, and this is once to protect.In the same manner voltage-stabiliser tube DZ7, DZ9 and diode DZ8, DZ10 are second protections.
Specific works are as follows with control process:
1. as needed connection measures line, starting up;
2. alarming value is set, power supply quality can be required according to user to be configured;
3. process of measurement is started;
4. industrial computer sampling;
5. high voltage measuring circuit is given tacit consent at the beginning in start, current sample values is recorded and judges whether to exceed certain value a (a is the standard value that high voltage measuring circuit judges high-low pressure), if exceeding certain value a, illustrates to be in high-voltage state;Perform Step 6;If sampled value is less than certain value a, illustrate to be in low-voltage state, switch relay status, and continue sampling;
6. sampled value is converted to into magnitude of voltage, execution step 8;
7. judge whether (b judges the standard of high-low voltage for low voltage measurement circuit to current sample values more than certain value b Value), if now sampled value illustrates to break down to suddenly become high voltage more than certain value b, execution step 4;If now sampled value Less than certain value b, execution step 6;
8. it is qualified to carry out judging whether by the magnitude of voltage for obtaining and alarming value contrast;If being qualified to perform step less than alarming value Rapid 9;The execution step 10 if higher than alarming value;
9. record data, execution step 11;
10. report to the police, execution step 11
11. are stored in data and terminate.

Claims (1)

1. a kind of electric power system part-loading goods measurement apparatus, is characterized in that:12v direct currents are connected to industrial computer as power supply, and+ 12v is also connected with the side of a relay (J), and relay (J) opposite side is connected respectively to the collection of optocoupler (U1) outlet side Electrode and the colelctor electrode of a triode (VT), the emitter stage of optocoupler (U1) outlet side is connected to the triode (VT) Base stage, the positive pole of optocoupler (U1) input side is connected to the I/O port of the industrial computer, the negative pole of optocoupler (U1) input side Be connected to the side of first resistor (R1), the opposite side of the first resistor (R1) be connected to (GND), the triode (VT) Emitter stage be connected to (GND);Ground (GND) is also respectively connected to the 4th resistance (R4) one end, the tenth diode (DZ10) and bears Pole, the 8th diode (DZ8) positive pole, the 6th diode (DZ6) negative pole, the 3rd diode (DZ3) positive pole, the 7th resistance (R7) one End, diode (D) positive pole, electric capacity (C) one end and input terminal (A2), the 4th resistance (R4) other end is connected respectively to The normal opened contact side and 3rd resistor (R3) one end of the relay (J), the normal opened contact opposite side of the relay (J) connects It is connected to the 8th resistance (R8) one end, 3rd resistor (R3) other end is connected respectively to second resistance (R2) one end and the 9th steady Pressure pipe (DZ9) negative pole and the 7th voltage-stabiliser tube (DZ7) positive pole, the 9th voltage-stabiliser tube (DZ9) positive pole is connected to the tenth diode (DZ10) positive pole, the 7th voltage-stabiliser tube (D7) negative pole is connected to the 8th diode (DZ8) negative pole, the second resistance (R2) other end is connected respectively to the 4th voltage-stabiliser tube (DZ4) negative pole, the first voltage-stabiliser tube (DZ1) positive pole and the relay (J) The side of another normal opened contact, the 4th voltage-stabiliser tube (DZ4) positive pole is connected to the 5th voltage-stabiliser tube (DZ5) negative pole, and described Five voltage-stabiliser tubes (DZ5) positive pole is connected to the 6th diode (DZ6) positive pole, and the first voltage-stabiliser tube (DZ1) negative pole is connected to second Voltage-stabiliser tube (DZ2) positive pole, the second voltage-stabiliser tube (DZ2) negative pole is connected to the 3rd diode (DZ3) negative pole, the relay The opposite side of another normal opened contact of device (J) is connected to the 5th resistance (R5) one end, the 5th resistance (R5) other end point One end of input terminal (A1) and the 6th resistance (R6) is not connected to, the other end of the 6th resistance (R6) is connected respectively to institute State the normally closed contact side and the 7th resistance (R7) one end of relay (J), the normally closed contact opposite side connection of the relay (J) To the 8th resistance (R8) one end, the 8th resistance (R8) other end is connected respectively to the diode (D) negative pole, the electric capacity (C) other end and thief hatch (AD).
CN201620989508.3U 2016-08-29 2016-08-29 Zero ground voltage measurement device of power supply system Withdrawn - After Issue CN206161727U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620989508.3U CN206161727U (en) 2016-08-29 2016-08-29 Zero ground voltage measurement device of power supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620989508.3U CN206161727U (en) 2016-08-29 2016-08-29 Zero ground voltage measurement device of power supply system

Publications (1)

Publication Number Publication Date
CN206161727U true CN206161727U (en) 2017-05-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620989508.3U Withdrawn - After Issue CN206161727U (en) 2016-08-29 2016-08-29 Zero ground voltage measurement device of power supply system

Country Status (1)

Country Link
CN (1) CN206161727U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106168635A (en) * 2016-08-29 2016-11-30 天津市百利电气有限公司 Electric power system part-loading goods measurement apparatus and control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106168635A (en) * 2016-08-29 2016-11-30 天津市百利电气有限公司 Electric power system part-loading goods measurement apparatus and control method

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Granted publication date: 20170510

Effective date of abandoning: 20200925