CN215818091U - Household variable characteristic signal generating circuit based on silicon controlled switched capacitor - Google Patents
Household variable characteristic signal generating circuit based on silicon controlled switched capacitor Download PDFInfo
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- CN215818091U CN215818091U CN202120766953.4U CN202120766953U CN215818091U CN 215818091 U CN215818091 U CN 215818091U CN 202120766953 U CN202120766953 U CN 202120766953U CN 215818091 U CN215818091 U CN 215818091U
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Abstract
The utility model provides a household variable characteristic signal generating circuit based on silicon controlled switched capacitor, comprising a photoelectric coupling detection circuit, an alternating current filter capacitor, a silicon controlled, a driving circuit and a processor; the silicon controlled rectifier is connected with the alternating current filter capacitor and used for controlling the switching of the alternating current filter capacitor in a mains supply loop to generate a user variable characteristic signal; the driving circuit is connected with the controllable silicon and used for controlling the input and the turn-off of the controllable silicon; the photoelectric coupling detection circuit is connected with the controlled silicon and is used for detecting the voltage zero crossing point at two ends of the controlled silicon; and the processor is respectively connected with the photoelectric coupling detection circuit and the driving circuit and is used for generating a driving signal to control the on-off of the controllable silicon. The switching of the alternating current filter capacitor in the commercial power loop is controlled by switching on and off the silicon controlled rectifier, the generated impulse pulse width is used as a household variable characteristic signal, external special equipment is not needed, the convenience and the practicability of household variable relation identification are improved, and the deployment cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of electric power, and particularly relates to a household variable characteristic signal generating circuit based on a silicon controlled switched capacitor.
Background
In the marketing management of the low-voltage distribution network, a power supply company needs to perform a series of low-voltage distribution area general investigation work such as user distribution area attribution, power utilization phase and working phase sequence of user electric equipment, wherein the user transformation relationship identification is often required to be performed on the low-voltage distribution area according to the power utilization phase of the electric equipment, and the user transformation relationship mainly assigns a corresponding relationship among an electric transformer, a line and a user table. At present, in many areas, the user change relationship is still checked and confirmed on site by depending on electric power workers, so that the efficiency is low, time and labor are wasted, and the obtained user change relationship is not completely accurate. With the promotion of smart grid construction work and the wide application of metering automation systems, accurate low-voltage transformer area household transformation relations are the basis for realizing the practicability of application functions such as line loss management, fault study and judgment, electric energy quality management, accurate operation and maintenance, maintenance and the like.
The current means for realizing the identification of the user-to-user relationship mainly comprises the steps of carrying out correlation analysis on acquisition equipment such as a platform area user-to-user identification instrument and an intelligent electric meter according to voltage and current data, or judging the affiliation of a user by switching a power capacitor and utilizing the relationship existing between voltage rise and voltage fall. Most of the methods are combined with a carrier communication mode, and the methods need to spend higher cost to deploy and maintain special equipment, and lack practicability.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the utility model provides a household variable characteristic signal generating circuit based on silicon controlled switched capacitor, which comprises a photoelectric coupling detection circuit, an alternating current filter capacitor, a silicon controlled rectifier, a drive circuit and a processor;
the silicon controlled rectifier is connected with the alternating current filter capacitor and used for controlling the switching of the alternating current filter capacitor in a mains supply loop to generate a user variable characteristic signal;
the driving circuit is connected with the controllable silicon and used for controlling the input and the turn-off of the controllable silicon;
the photoelectric coupling detection circuit is connected with the controlled silicon and is used for detecting the voltage zero crossing point at two ends of the controlled silicon;
and the processor is respectively connected with the photoelectric coupling detection circuit and the driving circuit and is used for generating a driving signal to control the on-off of the controllable silicon.
Optionally, the photoelectric coupling detection circuit includes a photoelectric coupler and a voltage dividing resistor;
the first end of the photoelectric coupler is connected with the input end of the controlled silicon through a voltage dividing resistor, the second end of the photoelectric coupler is connected with the output end of the controlled silicon, the third end of the photoelectric coupler is grounded, and the fourth end of the photoelectric coupler is connected with the first IO pin of the processor.
Optionally, at least one voltage dividing resistor is connected in series between the first end of the photoelectric coupler and the input end of the controllable silicon.
Optionally, the ac filter capacitor includes a first polarity capacitor, a second polarity capacitor, a resistor R1, and a resistor R2;
first polarity electric capacity, second polarity electric capacity, resistance R1 and resistance R2 are parallelly connected each other, first polarity electric capacity with the positive pole of second polarity electric capacity all links to each other with the output of silicon controlled rectifier, first polarity electric capacity with the negative pole of second polarity electric capacity all inserts the commercial power return circuit.
Optionally, the driving circuit includes a driving chip, a resistor R4, a resistor R5, a resistor R6, a resistor R10, a transistor Q5, and a capacitor C12;
a pin 1 of the driving chip is connected with a 5V power supply through a resistor R5, a pin 2 of the driving chip is connected with a collector of a triode Q5, a pin 4 of the driving chip is connected with a G pole of a thyristor, and a pin 6 of the driving chip is connected with an input end of the thyristor through a resistor R6;
the resistor R4 is connected as a pull-up resistor between a 5V power supply and a collector of the transistor Q5, a first end of the resistor R10 is connected with a second IO pin of the processor, a second end of the resistor R10 is connected with a base of the transistor Q5, a first end of the capacitor C12 is connected with a first end of the resistor R10, a second end of the capacitor C12 is connected with an emitter of the transistor Q5, and an emitter of the transistor Q5 is grounded.
Optionally, the driving chip is an optical coupling driver triggered by a non-zero crossing, and the model of the driving chip is MOC 3071.
Optionally, the model of the triode Q5 is MMBT 3904.
Optionally, the thyristor is a bidirectional thyristor, and the model is T1235T-8G.
The technical scheme provided by the utility model has the beneficial effects that:
the zero crossing point of the voltage at two ends of the controlled silicon is detected through the photoelectric coupling circuit, and the controlled silicon is controlled to be conducted by a processor according to the zero crossing signal and the zero crossing point deviation for a certain time, so that the input of the alternating current filter capacitor in the commercial power loop is controlled. The alternating current filter capacitor is turned off for a plurality of times by controlling the input of the silicon controlled rectifier, the small impulse width generated by switching action is used as a household variable characteristic signal, the collection and transmission of the household variable characteristic signal are completed by directly utilizing the commercial power loop, special equipment such as an external station household variable identification instrument is not needed, the collection equipment can be accessed into the commercial power loop to directly obtain the household variable characteristic signal, the limitation of transmitting the household variable characteristic signal by means of carrier communication is broken through, the convenience and the practicability of household variable relation identification are improved, and the deployment cost is reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a household variable characteristic signal generating circuit based on a thyristor switched capacitor according to the present invention;
FIG. 2 is a schematic circuit connection diagram of a photoelectric coupling detection circuit in the user-varying characteristic signal generation circuit according to the present invention;
fig. 3 is a schematic circuit connection diagram of an ac filter capacitor, a thyristor, and a driving circuit in the user-varying characteristic signal generating circuit according to the present invention.
Detailed Description
To make the structure and advantages of the present invention clearer, the structure of the present invention will be further described with reference to the accompanying drawings.
Example one
As shown in fig. 1, the present embodiment provides a household variable characteristic signal generating circuit based on thyristor switched capacitance, where the household variable characteristic signal generating circuit includes a photoelectric coupling detection circuit, an ac filter capacitor, a thyristor, a driving circuit, and a processor;
the silicon controlled rectifier is connected with the alternating current filter capacitor and used for controlling the switching of the alternating current filter capacitor in a mains supply loop to generate a user variable characteristic signal;
the driving circuit is connected with the controllable silicon and used for controlling the input and the turn-off of the controllable silicon;
the photoelectric coupling detection circuit is connected with the controlled silicon and is used for detecting the voltage zero crossing point at two ends of the controlled silicon;
and the processor is respectively connected with the photoelectric coupling detection circuit and the driving circuit and is used for generating a driving signal to control the on-off of the controllable silicon.
In the embodiment, the zero crossing point of the voltage at two ends of the controllable silicon is detected through the photoelectric coupling circuit, and then the processor controls the driving circuit to generate the driving signal according to the zero crossing signal, wherein the driving signal is used for controlling the controllable silicon to be conducted at the non-zero crossing point, so that the alternating current filter capacitor is put into a mains supply loop to generate a small impulse width, and the impulse width is a user variable characteristic signal.
As shown in fig. 2, the photoelectric coupling detection circuit includes a photoelectric coupler and a voltage dividing resistor;
the first end of the photoelectric coupler is connected with the input end of the silicon controlled rectifier through a voltage dividing resistor, the second end of the photoelectric coupler is connected with the output end of the silicon controlled rectifier, the third end of the photoelectric coupler is grounded GND, and the fourth end of the photoelectric coupler is connected with the first IO pin of the processor.
At least one divider resistor is connected in series between the first end of optoelectronic coupler and the input of silicon controlled rectifier, in this embodiment, 3 divider resistors are connected in series between the first end of optoelectronic coupler and the input of silicon controlled rectifier.
The first end and the second end of the photoelectric coupler are connected to the two ends of the controlled silicon to detect the zero crossing points of the two ends of the controlled silicon, when the controlled silicon does not cross the zero crossing points, the light emitting diode in the photoelectric coupler is conducted and emits light due to the fact that electric signals are added to the two ends of the light emitting diode, the photosensitive elements packaged together generate current after being illuminated and conduct the current, the generated current is transmitted to the processor as the electric signals, and therefore the detection of the zero crossing points of the two ends of the controlled silicon is achieved.
As shown in fig. 3, the ac filter capacitor includes a first polarity capacitor, a second polarity capacitor, a resistor R1, and a resistor R2;
first polarity electric capacity, second polarity electric capacity, resistance R1 and resistance R2 are parallelly connected each other, first polarity electric capacity with the positive pole of second polarity electric capacity all links to each other with the output of silicon controlled rectifier, first polarity electric capacity with the negative pole of second polarity electric capacity all inserts the commercial power return circuit.
When the thyristor is switched on, the alternating current filter capacitor is connected to the mains supply loop, so that a small impulse pulse width is generated in the mains supply loop, and the impulse pulse width is a user variable characteristic signal. The household variable characteristic signal generating circuit is integrated into signal generating equipment which is arranged on the side of a distribution transformer, and the generated characteristic signal circulates in a mains supply loop, so that the collecting equipment of the whole distribution area can collect the household variable characteristic signal only by being connected into the mains supply loop. The acquisition equipment and the distribution transformer terminal transmit the user variable characteristic signals through communication modes such as RS485 or wireless network, and the distribution transformer terminal determines the affiliation and the phase relationship of the transformer area of the electric equipment according to the user variable characteristic information to determine the user variable relationship.
In this embodiment, the driving circuit includes a driving chip, a resistor R4, a resistor R5, a resistor R6, a resistor R10, a transistor Q5, and a capacitor C12;
a pin 1 of the driving chip is connected with a 5V power supply through a resistor R5, a pin 2 of the driving chip is connected with a collector of a triode Q5, a pin 4 of the driving chip is connected with a G pole of a thyristor, and a pin 6 of the driving chip is connected with an input end of the thyristor through a resistor R6;
the resistor R4 is connected as a pull-up resistor between a 5V power supply and a collector of the transistor Q5, a first end of the resistor R10 is connected with a second IO pin of the processor, a second end of the resistor R10 is connected with a base of the transistor Q5, a first end of the capacitor C12 is connected with a first end of the resistor R10, a second end of the capacitor C12 is connected with an emitter of the transistor Q5, and an emitter of the transistor Q5 is grounded.
In this embodiment, the driving chip is an optical coupling driver triggered by a non-zero crossing, the model of the driving chip is MOC3071, the model of the triode Q5 is MMBT3904, and the model of the triode Q5 is a bidirectional thyristor and is T1235T-8G.
When two ends of the controlled silicon are at zero crossing points, the processor sends out control level through the second IO pin at the moment deviating from the zero crossing point by 500us to enable the triode Q5 to be conducted, the potential of the control level is pulled high through the pull-up resistor R4 to enable the light emitting diode in the driving chip to be conducted and emit light, the photosensitive element in the driving chip generates current due to illumination, driving signals of the controlled silicon are generated, and the controlled silicon is driven to be conducted at the non-zero crossing points.
The sequence numbers in the above embodiments are merely for description, and do not represent the sequence of the assembly or the use of the components.
The above description is only exemplary of the present invention and should not be taken as limiting the utility model, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A household variable characteristic signal generating circuit based on silicon controlled switched capacitors is characterized by comprising a photoelectric coupling detection circuit, an alternating current filter capacitor, a silicon controlled, a driving circuit and a processor;
the silicon controlled rectifier is connected with the alternating current filter capacitor and used for controlling the switching of the alternating current filter capacitor in a mains supply loop to generate a user variable characteristic signal;
the driving circuit is connected with the controllable silicon and used for controlling the input and the turn-off of the controllable silicon;
the photoelectric coupling detection circuit is connected with the controlled silicon and is used for detecting the voltage zero crossing point at two ends of the controlled silicon;
and the processor is respectively connected with the photoelectric coupling detection circuit and the driving circuit and is used for generating a driving signal to control the on-off of the controllable silicon.
2. The household variable characteristic signal generating circuit based on the silicon controlled switched capacitor as claimed in claim 1, wherein the photoelectric coupling detection circuit comprises a photoelectric coupler and a voltage dividing resistor;
the first end of the photoelectric coupler is connected with the input end of the controlled silicon through a voltage dividing resistor, the second end of the photoelectric coupler is connected with the output end of the controlled silicon, the third end of the photoelectric coupler is grounded, and the fourth end of the photoelectric coupler is connected with the first IO pin of the processor.
3. The household variable characteristic signal generating circuit based on the thyristor switched capacitor as claimed in claim 2, wherein at least one voltage dividing resistor is connected in series between the first end of the photoelectric coupler and the input end of the thyristor.
4. The thyristor-switched capacitor-based user-variable characteristic signal generating circuit as claimed in claim 1, wherein the ac filter capacitor comprises a first polarity capacitor, a second polarity capacitor, a resistor R1 and a resistor R2;
first polarity electric capacity, second polarity electric capacity, resistance R1 and resistance R2 are parallelly connected each other, first polarity electric capacity with the positive pole of second polarity electric capacity all links to each other with the output of silicon controlled rectifier, first polarity electric capacity with the negative pole of second polarity electric capacity all inserts the commercial power return circuit.
5. The thyristor-switched capacitor-based user-variable characteristic signal generating circuit as claimed in claim 1, wherein the driving circuit comprises a driving chip, a resistor R4, a resistor R5, a resistor R6, a resistor R10, a transistor Q5 and a capacitor C12;
a pin 1 of the driving chip is connected with a 5V power supply through a resistor R5, a pin 2 of the driving chip is connected with a collector of a triode Q5, a pin 4 of the driving chip is connected with a G pole of a thyristor, and a pin 6 of the driving chip is connected with an input end of the thyristor through a resistor R6;
the resistor R4 is connected as a pull-up resistor between a 5V power supply and a collector of the transistor Q5, a first end of the resistor R10 is connected with a second IO pin of the processor, a second end of the resistor R10 is connected with a base of the transistor Q5, a first end of the capacitor C12 is connected with a first end of the resistor R10, a second end of the capacitor C12 is connected with an emitter of the transistor Q5, and an emitter of the transistor Q5 is grounded.
6. The household variable characteristic signal generating circuit based on the silicon controlled switched capacitor as claimed in claim 5, wherein the driving chip is a non-zero-crossing triggered optical coupling driver, and the model is MOC 3071.
7. The household variable characteristic signal generating circuit based on the thyristor-switched capacitor as claimed in claim 5, wherein the model of the triode Q5 is MMBT 3904.
8. The household variable characteristic signal generating circuit based on the thyristor switched capacitor as claimed in claim 1, wherein the thyristor is a bidirectional thyristor with a model number of T1235T-8G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120766953.4U CN215818091U (en) | 2021-04-15 | 2021-04-15 | Household variable characteristic signal generating circuit based on silicon controlled switched capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120766953.4U CN215818091U (en) | 2021-04-15 | 2021-04-15 | Household variable characteristic signal generating circuit based on silicon controlled switched capacitor |
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| Publication Number | Publication Date |
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| CN215818091U true CN215818091U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120766953.4U Active CN215818091U (en) | 2021-04-15 | 2021-04-15 | Household variable characteristic signal generating circuit based on silicon controlled switched capacitor |
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| CN (1) | CN215818091U (en) |
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2021
- 2021-04-15 CN CN202120766953.4U patent/CN215818091U/en active Active
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