CN211508598U - Interactive leakage protector device for monitoring power consumption behavior - Google Patents
Interactive leakage protector device for monitoring power consumption behavior Download PDFInfo
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- CN211508598U CN211508598U CN201922478323.2U CN201922478323U CN211508598U CN 211508598 U CN211508598 U CN 211508598U CN 201922478323 U CN201922478323 U CN 201922478323U CN 211508598 U CN211508598 U CN 211508598U
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Abstract
The utility model discloses an interactive earth leakage protector device for monitoring power consumption behavior, which relates to the technical field of power system monitoring, is arranged at the entrance of a low-voltage alternating current circuit of a user, automatically monitors the running state information of the low-voltage alternating current circuit through a voltage current sensor, processes the running state information collected by the voltage current sensor by a singlechip control motor unit, and transmits the processed record to a background supervisory system through a communication unit; managers can timely position and remove faults through the background supervisory system, and the reliability of power supply is guaranteed. When a fault is eliminated, a manager can control the single chip microcomputer control unit to send a reclosing instruction through the background management system, the reclosing action execution unit carries out reclosing on a certain fixed line according to the reclosing instruction, and meanwhile, the reclosing result is sent to the background server, so that the defect that the conventional leakage protector needs manual closing after protection action is overcome.
Description
Technical Field
The utility model belongs to electric power system monitoring field especially relates to an interactive earth-leakage protector device for monitoring with electric action.
Background
Since the 21 st century, a new revolution and industry change are emerging, and the global technological innovation presents new development situation and characteristics. The intelligent development is promoted to a brand-new height no matter whether the industrial internet launched in the United states, the industry 4.0 in Germany or the manufacture 2025 in China. The power grid is concerned with the life of modern economy and is a fundamental component of national energy supply. With the construction and development of power grids, intellectualization becomes a new trend of the development of the world power grids, the concept of the smart power grids is put forward and increased to the national strategic level in the countries such as the United states, Europe and the like, and national power grid companies of China also formally release a development strategy of 'strong smart power grids' in 2009. In recent years, the acceleration of the construction of the smart power grid and the concepts of the internet of things, big data, energy internet and the like further promote the industrial development and technical innovation of the smart electrical appliances.
With the change of global energy patterns, electrical equipment and power consumption thereof sharply increase, the power grid structure is increasingly complex, the metering and protection requirements are increased year by year, the protection coordination is increasingly difficult, and the power utilization safety problem is more and more emphasized by the nation and the society. In industrial and agricultural production and daily life, electrical disasters caused by improper electricity utilization or line leakage happen occasionally, electrical fires frequently happen, personal electric shock accidents are increased greatly, and immeasurable casualties and property loss are caused. The installation of a leakage protector in a low-voltage distribution system is an effective measure for avoiding electric fire and electric equipment damage accidents caused by personal electric shock casualty accidents and leakage. The existing intelligent leakage protector implements intelligent control on the basis of detecting leakage current, completes breaking and closing operations, ensures the safety of lines and equipment, and directly influences the safety and reliability of power supply by the working correctness of the intelligent leakage protector.
Statistically, 80% of the faults causing tripping of the low-voltage circuit breaker are accidental, and the permanent fault accounts for no more than 10%. In particular, a leakage current breaker causes malfunction due to many factors, such as a surge voltage caused by disconnection of a large power load or lightning, harmonics caused by power electronic equipment, and a capacitive leakage current from a long conductor to the ground. The power supply interruption caused by transient faults often brings much loss and inconvenience to industrial and agricultural production and people life, particularly, a plurality of circuit breakers are installed in basements, telegraph poles and even places which are difficult to touch on high mountains, and much extra workload is needed for recovering power supply, so that the reclosing leakage protector is widely applied to power transmission and power supply lines, and the depth analysis of corresponding power utilization equipment is paid more and more attention.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an interactive type earth-leakage protector device for power consumption action monitoring to overcome the shortcoming of traditional earth-leakage protector device passive protection, solved the shortcoming that current conventional earth-leakage protector needs artifical combined floodgate after the protection action.
In order to achieve the above object, the utility model provides an interactive earth-leakage protector device for monitoring power consumption behavior, include:
a voltage current sensor connected to a user low-voltage ac line for detecting a voltage and a current of the low-voltage ac line;
the single chip microcomputer control motor unit is connected with the voltage and current sensor and used for processing the voltage and the current of the low-voltage alternating current circuit and generating a reclosing instruction by receiving a background instruction and a processing result;
the reclosing action execution unit is connected with the single chip microcomputer control motor unit and used for receiving the reclosing instruction to carry out automatic remote reclosing;
the communication unit is connected with the single chip microcomputer control motor unit and is used for transmitting the power utilization information received and processed by the single chip microcomputer control motor unit to a system background in real time; and
and the high-efficiency power supply conversion unit is respectively connected with the communication unit, the reclosing action execution unit, the voltage and current sensor and the single chip microcomputer control motor unit and is used for providing a power supply.
Further, the voltage and current sensor adopts a voltage sensor and a current sensor.
Further, the voltage sensor is of the model SPT 204A.
Further, the model of the current sensor is SCT266 FK.
Further, the communication unit adopts an independent CAN controller with an independent interface of SPI.
Furthermore, a reclosing control relay is adopted in the reclosing action execution unit, and the type of the reclosing control relay is JW1 FSN.
Further, the single chip microcomputer control motor unit adopts an atmega128 single chip microcomputer.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides an interactive earth leakage protector device for monitoring power consumption behavior, install in user's low pressure alternating current circuit entrance, through the running state information of voltage current sensor automatic monitoring low pressure alternating current circuit, the single chip microcomputer control motor unit handles according to the running state information that voltage current sensor gathered to record through the communication unit with handling and convey to backstage supervisory systems; managers can timely position and remove faults through the background supervisory system, and the reliability of power supply is guaranteed. When a fault is eliminated, a manager can control the single chip microcomputer control unit to send a reclosing instruction through the background management system, the reclosing action execution unit carries out reclosing on a certain fixed line according to the reclosing instruction, and meanwhile, the reclosing result is sent to the background server, so that the defect that the conventional leakage protector needs manual closing after protection action is overcome.
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 are briefly introduced below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an interactive earth leakage protector device for monitoring electricity consumption behaviors according to the present invention;
fig. 2 is a circuit diagram of a high efficiency power conversion unit of the present invention;
fig. 3 is a circuit diagram of the voltage sensor of the present invention;
fig. 4 is a circuit diagram of the current sensor of the present invention;
fig. 5 is a circuit diagram of a communication unit of the present invention;
fig. 6 is a circuit diagram of a reclosing action executing unit according to the present invention;
fig. 7 is a circuit diagram of the single chip microcomputer controlled motor unit of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides an interactive earth-leakage protector device for monitoring power consumption behavior includes: the control system comprises a communication unit, a reclosing action execution unit, a high-efficiency power supply conversion unit, a voltage and current sensor and a singlechip control motor unit. The single chip microcomputer control motor unit is respectively connected with the communication unit, the reclosing action execution unit, the high-efficiency power supply conversion unit and the voltage and current sensor, and the high-efficiency power supply conversion unit is respectively connected with the communication unit, the reclosing action execution unit, the voltage and current sensor and the single chip microcomputer control motor unit.
The voltage and current sensor is connected with a user low-voltage alternating current circuit and used for detecting the voltage and the current of the low-voltage alternating current circuit and sending an acquired result to the single chip microcomputer control motor unit;
the single chip microcomputer control motor unit is used for processing the voltage and the current of the low-voltage alternating current line detected by the voltage and current sensor to generate a local trigger condition, and sending a reclosing instruction to the reclosing action execution unit by receiving a background instruction and combining the local trigger condition;
the reclosing action execution unit is used for receiving a reclosing instruction sent by the single chip microcomputer control motor unit and realizing automatic remote reclosing;
and the communication unit is used for transmitting the power utilization information received and processed by the singlechip control motor unit to a system background in real time for parameter monitoring, alarming and issuing a reclosing command.
And the high-efficiency power supply conversion unit is used for providing a stable rated power supply for the communication unit, the reclosing action execution unit, the voltage and current sensor and the single chip microcomputer control motor unit.
Right the utility model discloses an interactive type earth-leakage protector device's for power consumption behavior monitoring theory of operation carries out the detailed description to make technical staff in the field more understand the utility model discloses:
in this embodiment, as shown in fig. 2, the circuit diagram of the high-efficiency power conversion unit includes a third capacitor C70, two ends of the third capacitor C70 are connected in parallel with two first transient suppression diode TVS1 and second transient suppression diode TVS2 in reverse series, two ends of the first transient suppression diode TVS1 and second transient suppression diode TVS2 in reverse series are connected in parallel with a first inductor L1, and the first inductor L1 is used as a primary filter; two ends of the first inductor L1 are connected in parallel with a fourth inductor L4, a first capacitor C1 and a second inductor L2 which are sequentially connected in series, and the fourth inductor L4, the first capacitor C1 and the second inductor L2 which are sequentially connected in series form secondary filtering; the two ends of the first capacitor C1 are connected in parallel with the two ends of the third inductor L3 and the second capacitor C2 which are sequentially connected in series, the two ends of the end of the second capacitor C2 are connected in parallel with the fourth inductor C71, one end of the fourth inductor C71 is grounded, and the other end of the fourth inductor C71 is connected with VCC and used for supplying power to other units of the interactive leakage protector device for monitoring the power utilization behavior.
The signal adopted by the first transient suppression diode TVS1 and the second transient suppression diode TVS2 is SMBJ 36A; the first inductor L1 is of the type SH-302 and the EMI filter is of the type BNX 002-01.
The voltage and current sensor adopts a voltage sensor and a current sensor, the voltage sensor adopts a voltage sensor with the model number of SPT204A, the circuit diagram of the voltage sensor of the embodiment is shown IN FIG. 3, two signal input ends (IN 1 and IN 2) of the SPT204A are connected IN parallel with two ends of a resistor R3, a resistor R2 and an inductor C1 which are sequentially connected IN series, two ends of the inductor C1 are connected IN parallel with a piezoresistor R1, and two ends of a piezoresistor R1 are voltage sequential signal ends, namely voltage input ends of the voltage sensor; two signal output ends (OUT 1 and OUT 2) of the SPT204A are connected in parallel with a resistor R4, two ends of the resistor R4 are connected in parallel with two anti-series transient suppression diodes (D1 and D2), and two ends of the two anti-series transient suppression diodes (D1 and D2) are voltage secondary signals, namely voltage output ends of the voltage sensor.
The current sensor adopts a sensor with the model of SCT266FK, the circuit diagram of the current sensor is shown IN FIG. 4, two signal input ends (IN 1 and IN 2) of the SCT266FK are current primary signal ends, namely the input ends of the current sensor; two signal output ends (OUT 1 and OUT 2) of the SCT266FK are connected in parallel with a resistor R1, and two ends of the resistor R1 are current secondary signal ends, namely output ends of the current sensor.
The communication unit adopts an independent CAN controller with an independent interface of SPI, the adopted model is MCP2515-IST/TSSO, and the communication unit is connected with the single chip microcomputer control motor unit through the SPI bus interface of the MCP 2515-IST/TSSO.
The reclosing action execution unit includes: a photoelectric coupler and a reclosing control relay; the model of the photoelectric coupler is TLP181GB, and the model of the reclosing control relay is JW1FSN-DC 24V-10A. As shown in fig. 6, in the circuit diagram of the reclosing action execution unit, a positive input end of the TLP181GB is connected to the high-efficiency power conversion unit, a negative input end of the TLP181GB is connected to one end of the inductor R42, and a field section of the inductor R42 is connected to the battery clamp control unit; a collector of the TLP181GB is connected to one end of the reclosing control relay, one end of the reclosing control relay is connected to a cathode of the diode D25, and an anode of the diode D25 is connected to the other end of the reclosing control relay; an emitter of the TLP181GB is connected with one end of an inductor R101, the other end of the inductor R101 is connected with a base electrode of a triode Q1, a collector of the triode Q1 is connected with an anode of a diode D25, the base electrode and the emitter of a triode Q1 are directly connected with an inductor R93 in parallel, and the emitter of a triode Q1 is grounded; one contact of the reclosing control relay is connected with one end of a patch piezoresistor RV5, the type of the piezoresistor RV5 is AVL5M0220, and the piezoresistor RV5 is connected between A, K stages and used for protecting a relay coil.
The single chip microcomputer control motor unit adopts an atmega128 single chip microcomputer, is connected with an interface of a reclosing execution unit through analog man input pins (PE 7-PE 0) of an ADC of the atmega128 single chip microcomputer, is connected with a current sensor through bidirectional I/O ports (PA 7-PAO) of a port A of the atmega128 single chip microcomputer, is connected with a voltage sensor through I/0 ports (PD 7-PD 0) of a bidirectional port D of the atmega128 single chip microcomputer, is connected with a communication unit through I/0 ports (PD 3-PD 0) of a bidirectional port B of the atmega128 single chip microcomputer, and is connected with a high-efficiency power supply conversion unit through a VCC end of the atmega128 single chip microcomputer.
The working principle is as follows: this device replaces original conventional earth leakage protection device, installs at user's low pressure AC line entrance, through the running state information of voltage current sensor automatic monitoring low pressure AC line (including load voltage/load current/leakage current etc.), single chip microcomputer control motor unit handles according to the running state information that voltage current sensor gathered, for example: when the detected line is subjected to trip protection due to faults such as overload, overvoltage, short circuit, open phase, undervoltage or residual current, the fault information sends information to the background system server through the communication unit, and the information content comprises trip switch positions, trip lines, action time, action current and the like (which can be set according to requirements). Managers can timely position and remove faults through the background supervisory system, and the reliability of power supply is guaranteed. When the fault is eliminated, a manager can control the single chip microcomputer control unit to send a reclosing instruction through the background management system, reclosing is carried out on a certain fixed line, meanwhile, a reclosing result is sent to the background server, and whether the instruction is executed successfully or not is confirmed.
The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or modifications within the technical scope of the present invention, and all should be covered by the scope of the present invention.
Claims (7)
1. An interactive earth leakage protector device for monitoring electricity usage, characterized by: the method comprises the following steps:
a voltage current sensor connected to a user low-voltage ac line for detecting a voltage and a current of the low-voltage ac line;
the single chip microcomputer control motor unit is connected with the voltage and current sensor and used for processing the voltage and the current of the low-voltage alternating current circuit and generating a reclosing instruction by receiving a background instruction and a processing result;
the reclosing action execution unit is connected with the single chip microcomputer control motor unit and used for receiving the reclosing instruction to carry out automatic remote reclosing;
the communication unit is connected with the single chip microcomputer control motor unit and is used for transmitting the power utilization information received and processed by the single chip microcomputer control motor unit to a system background in real time; and
and the high-efficiency power supply conversion unit is respectively connected with the communication unit, the reclosing action execution unit, the voltage and current sensor and the single chip microcomputer control motor unit and is used for providing a power supply.
2. An interactive earth-leakage protector device for monitoring of electricity usage according to claim 1, characterized in that: the voltage and current sensor adopts a voltage sensor and a current sensor.
3. An interactive earth-leakage protector device for monitoring of electricity usage according to claim 2, characterized in that: the voltage sensing is of the type SPT 204A.
4. An interactive earth-leakage protector device for monitoring of electricity usage according to claim 2, characterized in that: the current sensor is of the model SCT266 FK.
5. An interactive earth-leakage protector device for monitoring of electricity usage according to claim 1, characterized in that: the communication unit adopts an independent CAN controller with an independent interface of SPI.
6. An interactive earth-leakage protector device for monitoring of electricity usage according to claim 1, characterized in that: and a reclosing control relay is adopted in the reclosing action execution unit, and the type of the reclosing control relay is JW1 FSN.
7. An interactive earth-leakage protector device for monitoring of electricity usage according to claim 1, characterized in that: the single chip microcomputer control motor unit adopts an atmega128 single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922478323.2U CN211508598U (en) | 2019-12-31 | 2019-12-31 | Interactive leakage protector device for monitoring power consumption behavior |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922478323.2U CN211508598U (en) | 2019-12-31 | 2019-12-31 | Interactive leakage protector device for monitoring power consumption behavior |
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| Publication Number | Publication Date |
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| CN211508598U true CN211508598U (en) | 2020-09-15 |
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| CN201922478323.2U Active CN211508598U (en) | 2019-12-31 | 2019-12-31 | Interactive leakage protector device for monitoring power consumption behavior |
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