Reliable lifting appliance electrical system

Abstract

The utility model relates to the technical field of power grid electric power, in particular to a reliable lifting appliance electrical system, which comprises a protocol converter unit and an internet-of-things device unit, the protocol converter unit comprises a power supply conversion module, a first communication module, a first power line carrier communication module and a first MCU (Microprogrammed Control Unit) circuit module, the internet-of-things device unit comprises a current monitoring module, a voltage monitoring module, a smoke sensing module, a temperature and humidity detection circuit module, a power conversion circuit, a liquid crystal display module, a second communication module, a second power line carrier communication module, a 4G communication module, a remote signaling module, a FLASH external expansion circuit module, a second MCU circuit module, a water immersion monitoring module and a partial discharge monitoring module. The problems that an existing low-voltage electrical system device cannot monitor environment temperature and humidity changes in a transformer, cannot monitor the smoke condition in the transformer and cannot give an alarm on fire smoke are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power grid electricity, in particular to a reliable electrical system for a sling. Background Art

[0002] As a power source that replaces human and animal power, wind turbines are a green and clean production capacity that plays an important role in the development of productivity. The blades of wind turbines are an important component of wind turbines, and hoists are needed to assist in the installation and transportation of the blades.

[0003] The entire spreader system requires an electrical system, namely a power distribution system. The operation of the power distribution system affects the power supply of the entire spreader. The electrical system is usually in an open-air and remote environment, and the operation of the electrical system is greatly affected by the environment. It often fails due to weather reasons, resulting in power outages in large areas. In addition, the instability of the current and voltage of the electrical system can easily cause short circuits and failures, affecting the power supply quality and reliability of the electrical system. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a reliable electrical system for a sling.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reliable sling electrical system, including a protocol converter unit and an Internet of Things device unit, the protocol converter unit including a power conversion module, a first communication module, a first power carrier communication module and a first MCU circuit module, the power conversion module is used for system voltage conversion, the first communication module is used for data docking with external equipment, the first power carrier communication module is used for data output, the first MCU circuit module is used for data interaction and control of the entire system operation, the Internet of Things device unit includes a current monitoring module, a voltage monitoring module, a smoke sensing module, a temperature and humidity detection circuit module, a power conversion circuit, a liquid crystal display module, a second communication module, a second power carrier communication module, a 4G communication module, a remote signal module, a FLASH expansion circuit module, a second MCU circuit module, a water immersion monitoring module and a partial discharge monitoring module.

[0008] In order to facilitate the voltage monitoring of the cables in the transformer, the utility model is improved in that the current monitoring module is used for monitoring the current of the cables in the transformer, and the voltage monitoring module is used for monitoring the voltage of the cables in the transformer.

[0009] In order to facilitate the monitoring of the temperature and humidity of the environment in the transformer, the utility model is improved in that the smoke sensor module is used to monitor the smoke alarm in the transformer, and the temperature and humidity monitoring circuit module is used to monitor the temperature and humidity of the environment in the transformer.

[0010] In order to facilitate the communication with the external communication module, the utility model has the following improvements: the liquid crystal display module is used for local liquid crystal display and operation, and the second communication module is used for data collection of the electric meter in the transformer and for communication between external communication modules.

[0011] In order to facilitate the collection and aggregation of data from each sub-meter, the utility model is improved in that the second power carrier communication module is used to collect and aggregate data from each sub-meter in the bottom cable branch box and the meter box, and is used for precise positioning.

[0012] In order to facilitate remote monitoring and control, the utility model has the following improvements: the 4G communication module is used for data interaction between IoT platforms and can be used for remote monitoring and control.

[0013] In order to facilitate the alarm of the local telemetry fault signal, the utility model is improved in that the telemetry module is used for the alarm of the local telemetry fault signal.

[0014] In order to facilitate data interaction and control of the entire system operation, the utility model is improved in that the FLASH external expansion circuit module is used for storing and querying data, and the second MCU circuit module is used for data interaction and control of the entire system operation of the Internet of Things device unit.

[0015] In order to facilitate confirmation of the waterproof effect, the utility model is improved in that the water immersion monitoring module is used to monitor the water immersion situation in the transformer to confirm the waterproof effect.

[0016] In order to facilitate monitoring of partial discharge, the utility model is improved in that the partial discharge monitoring module is used to monitor the partial discharge of the transformer in the transformer to prevent partial discharge from causing discharge.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a reliable electrical system for slings, which has the following beneficial effects:

[0019] The electrical system of the lifting equipment is based on the power conversion module, which is used to convert the voltage required by the system. The first communication module is used to connect data with equipment from different manufacturers and is used for all-round access of different types of equipment. The first power carrier communication module is used to upload data accessed by equipment from different manufacturers through power carrier, and upload it to the Internet of Things device to meet various application requirements. The current monitoring module and the voltage monitoring module are used to monitor the current, voltage and other data in the transformer. The smoke sensor module and the temperature and humidity monitoring module are used to monitor the environment in the transformer. The second power carrier communication module collects bottom data, the remote signal module collects remote signal fault information, the partial discharge monitoring module collects partial discharge data, and the water immersion monitoring module collects water immersion status data. All information can be displayed on the local LCD screen, and can be exchanged externally through the second communication module, 4G communication module, etc., for operators to remotely view data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the circuit diagram of the first power carrier communication module of the utility model;

[0021] Figure 2 This is the circuit diagram of the second power carrier communication module of the utility model;

[0022] Figure 3 This is the circuit diagram of the smoke sensor module of the utility model;

[0023] Figure 4 This is the circuit diagram of the water immersion monitoring module of the utility model;

[0024] Figure 5 This is the circuit diagram of the partial discharge monitoring module of the utility model;

[0025] Figure 6 This is the circuit diagram of the liquid crystal display module of the utility model;

[0026] Figure 7 This is the circuit diagram of the remote signal module of the utility model;

[0027] Figure 8 This is the circuit diagram of the FLASH external expansion circuit module of the utility model. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-8The utility model is a reliable electrical system for a sling, comprising a protocol converter unit and an Internet of Things device unit, the protocol converter unit comprising a power conversion module, a first communication module, a first power carrier communication module and a first MCU circuit module, the power conversion module is used for converting system voltage, the first communication module is used for data docking with external equipment, the first power carrier communication module is used for data output, the first MCU circuit module is used for data interaction and control of the entire system operation, the Internet of Things device unit comprises a current monitoring module, a voltage monitoring module, a smoke sensing module, a temperature and humidity detection circuit module, a power conversion circuit, a liquid crystal display module, a second communication module, a second power carrier communication module, a 4G communication module, a remote signaling module, a FLASH external expansion circuit module, a second MCU circuit module, a water immersion monitoring module and a partial discharge monitoring module.

[0030] In this embodiment, the current monitoring module is used to monitor the current of the cable in the transformer, and the voltage monitoring module is used to monitor the voltage of the cable in the transformer, which facilitates the voltage monitoring of the cable in the transformer.

[0031] In this embodiment, the smoke sensor module is used to monitor the smoke alarm in the transformer, and the temperature and humidity monitoring circuit module is used to monitor the temperature and humidity of the environment in the transformer, which is convenient for monitoring the temperature and humidity of the environment in the transformer.

[0032] In this embodiment, the LCD display module is used for local LCD display and operation, and the second communication module is used for data collection of the electric meter in the transformer and for communication between external communication modules to facilitate communication with external communication modules.

[0033] In this embodiment, the second power carrier communication module is used to collect and summarize the data of each sub-meter in the bottom cable branch box and the meter box, and is used for precise positioning to facilitate the collection and summary of data of each sub-meter.

[0034] In this embodiment, the 4G communication module is used for data interaction between IoT platforms and can be used for remote monitoring and control, facilitating remote monitoring and control.

[0035] In this embodiment, the telemetry module is used to alarm the local telemetry fault signal, which facilitates the alarm of the local telemetry fault signal.

[0036] In this embodiment, the FLASH external expansion circuit module is used for storing and querying data, and the second MCU circuit module is used for data interaction and control of the entire system operation of the Internet of Things device unit, which facilitates data interaction and control of the entire system operation of the Internet of Things device unit.

[0037] In this embodiment, the water immersion monitoring module is used to monitor the water immersion situation in the transformer and confirm the waterproof effect.

[0038] In this embodiment, the partial discharge monitoring module is used to monitor the partial discharge of the transformer in the transformer to prevent the partial discharge from causing discharge.

[0039] To sum up, when the electrical system of the reliable sling is in use, the power conversion module is used to convert the voltage required by the system, the first communication module is used to connect data with equipment from different manufacturers, and is used for all-round access to different types of equipment. The first power carrier communication module is used to upload data accessed by equipment from different manufacturers through power carrier mode, and upload it to the Internet of Things device to meet various application requirements. The current monitoring module is used to monitor the current of the cable in the transformer, the voltage monitoring module is used to monitor the voltage of the cable in the transformer, the smoke sensor module is used to monitor the smoke alarm in the transformer, and the temperature and humidity monitoring circuit module is used to monitor the ambient temperature and humidity in the transformer. The second carrier communication module collects the background The remote signal module collects remote signal fault information, the partial discharge monitoring module collects partial discharge data, and the flood monitoring module collects flood status data. All information can be displayed on the local LCD screen and can be exchanged externally through the second communication module, 4G communication module, etc., for operators to view data remotely and for full-range online monitoring of fine substations. The first power carrier communication module processes the data of different types of equipment from different manufacturers through MCU and transmits it to the IoT device through carrier communication for data processing. The IoT device can also send control signals to the power carrier module of the protocol converter through the power carrier communication module circuit to control devices of different types of equipment from different manufacturers, such as Figure 1In the middle: R8 is a varistor, which belongs to the power input lightning protection, C15 is a safety capacitor, which filters the DC component in the power grid, T1 is an AC transformer, which can convert AC 220V into AC5V, C13 is a filter capacitor, which can make the output voltage of T1 more stable, U2MB10S is a rectifier bridge, which can convert AC voltage into DC voltage, among which C13 is a filter capacitor, which makes the DC 5V output more stable, and R9 is a current limiting resistor, which separates the transformer ground from the internal circuit ground. The fuse acts as a fuse, D1 and D2 form a double protection tube to discharge the leakage current in the circuit, C8, C12, C10, and C11 are the matching capacitors of U2, C9 and R4, C16 and R7 respectively form filter circuits to remove high-frequency components, R5 and R6 form a voltage divider circuit, U2 detects the voltage at pin 11, and can determine whether U2 is in the sending stage or receiving moment. When pin 5 of U2 is high, the data signal is input into the FSK modulator from pin 17 of U2 to form a switch control current And drive the oscillator to generate a triangle wave with a frequency deviation of ±2.2%, output a sine wave signal through the sine wave shaping circuit, and then transmit it to the power line through the coupling coil after power amplification. When the 5th pin of U2 is at the ground level, the circuit is in the receiving mode. The signal on the power line is input to the 10th pin of U2 through the coupling transformer, and enters the limiting amplifier for amplification. The DC component and 50Hz / 100Hz industrial frequency signal in the signal are filtered out, and then the phase-locked loop circuit demodulates and the RC filter circuit filters out the high-frequency component to output the data signal. In order to keep the data signal reliable, it is shaped by the comparator and filtered by the noise filter, and finally the complete data signal is output from the 12th pin. The second power carrier communication module transmits the power quality information of all meters in the cable branch box and the meter box to the MCU on the energy controller through carrier communication for data processing. The energy controller can also send a control signal to the corresponding power carrier module of the bottom meter through the power carrier communication module circuit to realize the control of the meter, such as Figure 2In the figure: R63 is a varistor, which belongs to the power input lightning protection, C37 is a safety capacitor, which filters out the DC component in the power grid, T1 is an AC transformer, which can convert AC 220V into AC5V, C36 is a filter capacitor, which can make the voltage at the output of T1 more stable, U2MB10S is a rectifier bridge, which can convert AC voltage into DC voltage, among which C33 is a filter capacitor, which makes the DC 5V output more stable, R64 is a current limiting resistor, which separates the transformer ground from the internal circuit ground and acts as a fuse, D11 and D12 form a double protection tube, which discharges the leakage current in the circuit, C25 , C31, C27, C30 are the matching capacitors of U12, C26 and R59, C62 and R38 form filter circuits respectively, which can separate the high-frequency components, R60 and R61 form a voltage divider circuit, U12 detects the voltage at pin 11, and can determine whether U12 is in the sending stage or receiving moment. When pin 5 of U12 is at a high level, the data signal is input into the FSK modulator from pin 17 of U12, forming a switch control current and driving the oscillator to generate a triangle wave with a frequency deviation of ±2.2%, and the sine wave shaping circuit outputs a sine wave signal, which is then transmitted to the power line by the coupling coil after power amplification. When the 5th foot of U12 is at the ground level, the circuit is in receiving mode, and the signal on the power line is input to the 10th foot of U12 through the coupling transformer, and enters the limiting amplifier for amplification, and the DC component and 50Hz / 100Hz power frequency signal in the signal are filtered out, and then the phase-locked loop circuit demodulates, and the RC filter circuit filters out the high-frequency component to output the data signal. In order to keep the data signal reliable, it is shaped by the comparator and filtered by the noise filter, and finally the complete data signal is output from the 12th foot. Power line carrier communication uses the existing power lines to transmit signals. Its working principle is briefly described as follows: the data is modulated on several The carrier frequency of tens to hundreds of KHz is sent through the power line. The receiving end receives the carrier carrying the signal on the power line and demodulates it to restore the original data. The communication carrier is the existing power line. There is no need to re-lay the communication line like wired communication, nor does it require complex sending and receiving equipment to transmit information like wireless transmission. The smoke sensor module monitors whether there is smoke in the transformer room and plays a fire alarm role. If fire smoke is detected, the smoke alarm information data is transmitted to the MCU and uploaded to the background for alarm. U8 is a smoke sensor module that can detect smoke particles in the air in real time. Figure 3In: C16 is a filter capacitor to ensure that the working power supply of the smoke sensor module U8 is in a stable state. R34 is a current limiting resistor to protect the module from overcurrent. When there is no smoke in the air, U8's pin 1 outputs a low level. At this time, the LED lamp D6 is turned on and is in a light-emitting state, indicating that it is currently in a normal state. U8's pin 2 outputs a high level. At this time, the LED lamp D7 is not turned on and is not in a light-emitting state, indicating that it is currently in a normal state. U8's pin 4 outputs a low level and cannot drive the transistor Y1 to work. Then the voltage at the YGBJ point is at a high level. When the MCU detects that the voltage at the YGBJ point is high, it indicates that it is currently in a normal state. When there is smoke in the air, U8's pin 1 outputs a high level. At this time, the LED lamp D6 is not turned on and is not in a light-emitting state, indicating that it is currently in a smoke state. In the fog alarm state, the 2nd pin of U8 outputs a low level. At this time, the LED lamp D7 is turned on and is in a light-emitting state, indicating that it is currently in a smoke alarm state. The 4th pin of U8 outputs a high level. Through the R35 current-limiting resistor, a small current can be generated to drive the switch transistor Y1 to work. Then the voltage at the YGBJ point is at a low level. When the MCU detects the low level of the YGBJ point voltage, it indicates that it is currently in a smoke alarm state. R36 is a low-discharge resistor to prevent the level of the 4th pin output of U8 from changing too much and breaking through Y1, thereby protecting Y1. R30 is a current-limiting resistor. When Y1 is turned on, it ensures that VCC3.3V will not be directly pulled down to the ground level, causing abnormal system voltage. The water immersion monitoring module monitors whether there is water in the transformer to prevent water leakage in the transformer. Figure 4 In: SJ_RX pin is the AD acquisition pin of the microcontroller, which is pulled down to a low level through the R24 pull-down resistor. SJ_IN and SJ_OUT are connected to the two pins of the water immersion sensor respectively. When there is water at the monitoring point, the two pins of the water immersion sensor will be turned on, that is, SJ_IN and SJ_OUT will be turned on, then the voltage value read by the microcontroller pin SJ_RX will change, thereby judging that a water immersion alarm has occurred. D1 and D4 are voltage-stabilizing diodes, which are used to contain the voltages at both ends of SJ_OUT and SJ_IN within 5.1V to protect the U11 microcontroller chip. R17 and R25 are voltage-dividing resistors. When SJ_OUT and SJ_IN are turned on, the SJ_RX voltage is approximately 3.3V*(R17 / R17+R25). The partial discharge monitoring module monitors the change value of the ultrasonic data when the transformer generates partial discharge, such as Figure 5In the figure: U1, U4, and U5 are three ultrasonic sensors with different frequency bands. They can be connected in parallel to form an ultrasonic group with a measurement frequency of 20K~60KHZ. C1 and C6 are DC-isolating capacitors to remove the DC component in the signal. R4 and R11 are current-limiting resistors to protect U2 from being broken down by the ultrasonic group. R2 and R13 are ground-stabilizing resistors. U2 is a first-stage amplifier with an amplification factor of 1+R15 / R13=6 times. C3 is a DC-isolating capacitor to remove the DC component in the signal. R9 and R12 form a second-stage amplifier circuit with an amplification factor of 1+R12 / R9=6. R1 is a ground-stabilizing resistor. C2 is a DC-isolating capacitor to remove the DC component in the signal. R16 and R5 form a third-stage amplifier circuit with an amplification factor of 1+R16 / R5=2 times, C7 is a filter capacitor to ensure a stable output waveform; C4 and R10 form an RC filter circuit to perform RC filtering on the signal, R3 and R10 form a four-stage amplifier circuit, the amplification factor = 1+R10 / R3=201, R14 is a ground balancing resistor, R6 and C5 form an RC filter to protect U6 from being broken down by the front end and play a filtering role at the same time. U6 is an analog-to-digital signal conversion chip that can convert the analog signal of the front end into a digital signal output and link it with the single-chip microcomputer MCU. Among them, R7 and R8 are pull-up resistors for the U6 data pin to improve the driving ability. The LCD display module displays the data processed by the MCU through the LCD screen. The operator can query relevant data information through the LCD screen, such as Figure 6 In the figure: U10's 1, 3, 4, 5, and 6 are connected to the IO ports of the MCU respectively, indicating that U10 and the MCU interact through a protocol, and MCU data can be transmitted through these pins. C39 is a filter capacitor, which makes the U10 system operating voltage run smoothly. YJ_BG is the backlight controller pin of the LCD screen, which is connected to the MCU. When YJ_BG=1, the switch transistor Q6 can be turned on, that is, at this time, the 8th pin of U10 is also a high level = 3.3V, then the LCD screen is on, indicating that the LCD screen is lit. When YJ_BG=0, the switch transistor Q6 is not turned on, that is, at this time, the 8th pin of U10 is also a low level = 0V, then the LCD screen is off, indicating that the LCD screen is off. The remote signal module is used for external telemetry signal monitoring. When the external telemetry signal alarms, the alarm information can be uploaded to the background, such as Figure 7 In the middle: R72 is a current limiting resistor, R69 is a pull-up resistor. When there is no external telemetry fault signal, IN1=0V, which is a low level, and the IC1 optocoupler is not turned on, then NET_IN1=3.3V, MCU detects a high level, and the system does not alarm. When there is an external telemetry fault signal, IN1=3.3V, which is a high level, and the IC1 optocoupler is turned on, then NET_IN1=0V, MCU detects a low level, and the system alarms. The FLASH external expansion circuit module is to ensure that when the data capacity is insufficient, the data can be stored on the chip to ensure that the data can be permanently saved. Figure 8Middle: C48 is a filter capacitor to ensure stable operation of the chip voltage.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reliable electrical system for spreaders, characterized in that: It includes a protocol converter unit and an Internet of Things device unit. The protocol converter unit includes a power conversion module, a first communication module, a first power carrier communication module and a first MCU circuit module. The power conversion module is used for system voltage conversion. The first communication module is used for data docking with external equipment. The first power carrier communication module is used for data output. The first MCU circuit module is used for data interaction and control of the entire system operation of the protocol converter unit. The Internet of Things device unit includes a current monitoring module, a voltage monitoring module, a smoke sensing module, a temperature and humidity detection circuit module, a power conversion circuit, a liquid crystal display module, a second communication module, a second power carrier communication module, a 4G communication module, a remote signaling module, a FLASH expansion circuit module, a second MCU circuit module, a water immersion monitoring module and a partial discharge monitoring module.

2. A reliable spreader electrical system according to claim 1, characterized in that: The current monitoring module is used to monitor the current of the cable in the transformer, and the voltage monitoring module is used to monitor the voltage of the cable in the transformer.

3. A reliable spreader electrical system according to claim 2, characterized in that: The smoke sensor module is used to monitor the smoke alarm in the transformer, and the temperature and humidity monitoring circuit module is used to monitor the temperature and humidity of the environment in the transformer.

4. A reliable spreader electrical system according to claim 3, characterized in that: The liquid crystal display module is used for local liquid crystal display and operation, and the second communication module is used for data collection of the electric meter in the transformer and for communication between external communication modules.

5. A reliable spreader electrical system according to claim 4, characterized in that: The second power carrier communication module is used to collect and summarize data from the bottom cable branch box and each sub-meter in the meter box, and is used for precise positioning.

6. A reliable spreader electrical system according to claim 5, characterized in that: The 4G communication module is used for data exchange between IoT platforms and can be used for remote monitoring and control.

7. A reliable spreader electrical system according to claim 6, characterized in that: The remote signaling module is used for alarming local remote sensing fault signals.

8. A reliable spreader electrical system according to claim 7, characterized in that: The FLASH external expansion circuit module is used for storing and querying data, and the second MCU circuit module is used for data interaction and control of the entire system operation of the IoT device unit.

9. A reliable spreader electrical system according to claim 8, characterized in that: The water immersion monitoring module is used to monitor the water immersion situation in the transformer and confirm the waterproof effect.

10. A reliable spreader electrical system according to claim 9, characterized in that: The partial discharge monitoring module is used to monitor the partial discharge of the transformer in the transformer to prevent the partial discharge from causing discharge.

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