Intelligent fusion terminal combined current sampling and loop inspection system

Abstract

The utility model provides an intelligent fusion terminal combined current sampling and loop inspection system. The intelligent fusion terminal combined current sampling and loop inspection system comprises a microprocessor, and an inspection function module, an electric energy quality detection module, a temperature sensor, a smoke sensor, a level conversion module, a display module, a relay module, a wireless communication module and a zero sequence current transformer which are electrically connected with the microprocessor, the input end of the inspection function module is connected with the combined current transformer, the input end of the electric energy quality detection module is connected with the combined current transformer, the combined voltage sensor and the level conversion module are electrically connected with the arc extinguishing protector, and the relay module is electrically connected with the overvoltage protection module, the overcurrent protection module, the leakage protection module and the field alarm module. According to the utility model, electric power parameters, switch states, fault information and the like in a power distribution loop are automatically monitored, alarm and protection measure starting are carried out on detected abnormal conditions, the monitored electric power parameters can be wirelessly sent to a remote monitoring end, and integrated management of monitoring data is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of power monitoring terminal, specifically relates to a kind of intelligent fusion terminal combined current sampling and loop inspection system. BACKGROUND

[0002] Power system is a complex system, and if a fault occurs, it will cause a chain reaction, seriously endangering the safe operation of the power system. The loop inspection device can comprehensively monitor the power system, diagnose faults and handle them in time, thereby ensuring the safe and stable operation of the power system.

[0003] The existing loop inspection equipment of the power consumption collection system has certain drawbacks in use. When performing circuit inspection, it is manually operated, and cannot be patrolled in real time, which is not conducive to the timely investigation and immediate measures of power parameters, especially power faults. Secondly, after on-site manual data collection, data management and integration are troublesome, and data management is not good. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide an intelligent fusion terminal combined current sampling and loop inspection system to solve the deficiencies of the prior art described in the background.

[0005] To solve the above technical problems, the embodiments of the utility model provide the following technical solutions:

[0006] An intelligent fusion terminal combined current sampling and loop inspection system, comprising a microprocessor and a patrol function module, an electric energy quality detection module, a temperature sensor, a smoke sensor, a level conversion module, a display module, a relay module, a wireless communication module and a zero sequence current transformer electrically connected to the microprocessor, wherein the patrol function module input end is connected to a combined current transformer, the electric energy quality detection module input end is connected to a combined current transformer and a combined voltage sensor, the level conversion module is electrically connected to an arc extinguishing protector, and the relay module is electrically connected to an overvoltage protection module, an overcurrent protection module, an electric leakage protection module and a field alarm module.

[0007] Optionally, the microprocessor is a single-chip microcomputer.

[0008] Optionally, the combined current transformer is a three-phase current transformer, and the three-phase current transformer is electrically connected to the patrol function module through three SPI communication chips.

[0009] Optionally, the SPI communication chip is also connected to the electric energy quality detection module through an RC filter circuit.

[0010] Optionally, the electric energy quality detection module is model V9203.

[0011] Optionally, the level conversion module is a MAX232 level conversion chip.

[0012] Optionally, the arc extinguishing protector is model ASCP200.

[0013] Optionally, the overvoltage protection module is model 7VV3002-3AD20.

[0014] Optionally, the overcurrent protection module is model ALP220-400 / M.

[0015] Optionally, the leakage protection module is an F360 leakage circuit breaker.

[0016] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0017] This invention can automatically monitor parameters such as voltage, current, power, and frequency in power distribution circuits, as well as switch status and fault information. By monitoring these parameters in real time, it comprehensively understands the circuit's operating status, promptly detects problems, and alarms and activates protective measures for detected anomalies. For example, it promptly issues alarms and implements corresponding power protection in cases of current overload or voltage abnormalities. Furthermore, the ASCP200 electrical fire-resistant current-limiting protector overcomes the problems of large short-circuit current, long operating time, and large short-circuit arcs inherent in traditional circuit breakers. The monitored electrical energy parameters can be displayed on a display module and wirelessly transmitted to a remote monitoring terminal via a wireless communication module, enabling integrated management of monitoring data. Attached Figure Description

[0018] Figure 1 This is a block diagram illustrating the principle of the intelligent fusion terminal combined current sampling and loop inspection system of this utility model.

[0019] Figure 2 This is a schematic diagram of the power quality detection module of the intelligent fusion terminal combined current sampling and loop inspection system of this utility model.

[0020] Figure 3 This is a schematic diagram of the SPI communication chip circuit of the intelligent fusion terminal combined current sampling and loop inspection system of this utility model.

[0021] Figure 4 This is a schematic diagram of the current detection and filtering circuit of the intelligent fusion terminal combined current sampling and loop inspection system of this utility model.

[0022] Figure 5 This is a circuit diagram of the inspection function module of the intelligent fusion terminal combined current sampling and loop inspection system of this utility model.

[0023] Figure 6This is a schematic diagram of the voltage sensor circuit of the intelligent fusion terminal combined current sampling and loop inspection system of this utility model. Detailed Implementation

[0024] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, this utility model proposes an intelligent integrated terminal combined current sampling and loop inspection system, including a microprocessor 1 and an inspection function module 7 electrically connected to the microprocessor 1, a power quality detection module 4, a temperature sensor 5, a smoke sensor 6, a level conversion module 8, a display module 10, a relay module 11, a wireless communication module 12, and a zero-sequence current transformer 13. The input terminal of the inspection function module 7 is connected to the combined current transformer 2, the input terminal of the power quality detection module 4 is connected to the combined current transformer 2 and the combined voltage sensor 3, the level conversion module 8 is electrically connected to the arc extinguishing protector 9, and the relay module 11 is electrically connected to the overvoltage protection module 14, the overcurrent protection module 15, the leakage current protection module 16, and the on-site alarm module 17.

[0026] Microprocessor 1 is a single-chip microcomputer used to receive power detection parameters (voltage, current, frequency, active power, reactive power, active energy, reactive energy, etc.) of the power distribution circuit detected by the power quality detection module, as well as fault parameters such as temperature, smoke, leakage current, etc., and to alarm and protect against detected abnormalities, such as alarming or protecting against current overload or voltage abnormality.

[0027] The combined current transformer 2 is a three-phase current transformer. The three-phase current transformer is electrically connected to the inspection function module 7 via three SPI communication chips. The SPI communication chips are as follows: Figure 3 As shown. The SPI communication chip is also connected to the power quality detection module 4 via an RC filter circuit, as shown in the diagram. Figure 4 As shown. The circuit of the inspection function module 7 is as follows. Figure 5 As shown.

[0028] like Figure 2 As shown, the power quality detection module 4 is model V9203. V9203 is a wide-range, high-precision three-phase power metering AFE chip that can provide active power, reactive power, apparent power, active and reactive quantities for both the combined phase and each phase. It can also measure parameters such as the effective value of current and voltage, power factor, frequency, and phase of each phase, and is suitable for various three-phase three-wire and three-phase four-wire power metering applications.

[0029] Level conversion module 8 uses a MAX232 level conversion chip to convert the TTL level of the microcontroller to RS232 level, enabling communication between the microcontroller and the arc extinguishing protector 9. The arc extinguishing protector 9 is model ASCP200. The ASCP200 electrical fire-resistant current-limiting protector effectively overcomes the shortcomings of traditional circuit breakers, such as large short-circuit current, long operating time, large short-circuit arc, and short service life. In the event of a short-circuit fault, it can rapidly limit the short-circuit current at the microsecond level to achieve arc extinguishing protection, thereby significantly reducing electrical fire accidents and ensuring the safety of personnel and property in the workplace.

[0030] In addition, the overvoltage protection module 14 is model 7VV3002-3AD20, the overcurrent protection module 15 is model ALP220-400 / M, and the leakage protection module 16 is an F360 leakage circuit breaker.

[0031] The working principle of the technical solution provided by this utility model is as follows:

[0032] like Figure 3 The diagram shown is a schematic of the SPI communication chip circuit of the current transformer of this invention. Ia+ and Ia- in the diagram represent the output signals of the current transformer. This invention employs a combined current transformer (with three sets of transformers that separately acquire signals from the three-phase circuit). Figure 3 Only phase A is shown; the other two phases are the same as this circuit. (SPI communication chip and...) Figure 5 The GCT13-CORE inspection module, as shown, uses communication via the SPI communication chip. The IA_SPI_CS pin of the SPI communication chip is connected to the inspection module, while IC_SPI_MISO, IC_SPI_MOSI, and IC_SPI_CLK are common signal terminals. The GCT13-CORE inspection module is suitable for data acquisition, control, and analysis of combined current transformers. It can detect combined current transformer data in real time, as well as the status of the transformer current metering circuit (normal connection, primary / secondary circuit shunting, secondary circuit open circuit, and circuit series rectifier connection). Simultaneously, the current and voltage parameters detected by the combined current transformer and combined voltage sensor are sent to the power quality detection module, which provides the active power, reactive power, apparent power, active energy, and reactive energy of the combined phase and each phase. It can also measure the effective values ​​of current and voltage, power factor, frequency, and phase parameters of each phase. The current parameters detected by the current transformer are transmitted via… Figure 4 The RC filter circuit shown provides filtering before inputting the power quality detection module.

[0033] In addition, it can be combined with temperature sensors, smoke sensors, and zero-sequence current sensors to detect fault parameters such as temperature, smoke, and leakage current. Alarms and protective measures will be implemented for detected anomalies. For example, in the event of current overload or voltage abnormalities, alarm modules, overvoltage protection modules, overcurrent protection modules, and leakage current protection modules will be used to issue alarms or take corresponding protective measures. Furthermore, the ASCP200 electrical fire-resistant current-limiting protector can overcome the problems of large short-circuit current, long operating time, and large short-circuit arcs inherent in traditional circuit breakers. Monitored electrical energy parameters can be displayed on the display module and wirelessly transmitted to a remote monitoring terminal via a wireless communication module (4G / 5G module) to achieve integrated management of monitoring data.

[0034] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A smart integrated terminal combined current sampling and loop inspection system, characterized in that, The system includes a microprocessor and a microprocessor-connected inspection function module, a power quality detection module, a temperature sensor, a smoke sensor, a level conversion module, a display module, a relay module, a wireless communication module, and a zero-sequence current transformer. The input terminal of the inspection function module is connected to a combined current transformer, the input terminal of the power quality detection module is connected to a combined current transformer and a combined voltage sensor, the level conversion module is electrically connected to an arc-extinguishing protector, and the relay module is electrically connected to an overvoltage protection module, an overcurrent protection module, a leakage current protection module, and a field alarm module.

2. The intelligent fusion terminal combined current sampling and loop inspection system according to claim 1, characterized in that, The microprocessor is a single-chip microcomputer.

3. The intelligent fusion terminal combined current sampling and loop inspection system according to claim 1, characterized in that, The combined current transformer is a three-phase current transformer, and the three-phase current transformer is electrically connected to the inspection function module through three SPI communication chips.

4. The intelligent fusion terminal combined current sampling and loop inspection system according to claim 3, characterized in that, The SPI communication chip is also connected to the power quality detection module via an RC filter circuit.

5. The intelligent fusion terminal combined current sampling and loop inspection system according to claim 1, characterized in that, The power quality detection module is model V9203.

6. The intelligent fusion terminal combined current sampling and loop inspection system according to claim 1, characterized in that, The level conversion module is a MAX232 level conversion chip.

7. The intelligent fusion terminal combined current sampling and loop inspection system according to claim 1, characterized in that, The arc extinguishing protector is model ASCP200.

8. The intelligent fusion terminal combined current sampling and loop inspection system according to claim 1, characterized in that, The overvoltage protection module is model 7VV3002-3AD20.

9. The intelligent fusion terminal combined current sampling and loop inspection system according to claim 1, characterized in that, The overcurrent protection module is model ALP220-400 / M.

10. The intelligent fusion terminal combined current sampling and loop inspection system according to claim 1, characterized in that, The leakage protection module is an F360 leakage circuit breaker.

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