Comprehensive energy supply device and method for power transmission line monitoring equipment

Abstract

The invention discloses a comprehensive energy supply device and method for power transmission line monitoring equipment, and relates to the technical field of energy supply, and the device comprises an induction power supply module which is used for converting electromagnetic energy emitted from a power grid line into electric energy, and inputting the converted electric energy to a power management module; the solar power supply module is used for converting solar energy into electric energy and inputting the converted electric energy into the power management module; the power supply management module is used for storing input electric energy and supplying power to intelligent monitoring equipment of a power grid, and when the power supply power is greater than the load consumption power, the heating value of an energy storage unit in the power supply management module can be balanced; the device can provide stable energy supply for power transmission line monitoring equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy supply, in particular to a comprehensive energy supply device for a power transmission line monitoring device. BACKGROUND

[0002] At present, smart grid has become a new trend of the world grid development, and in the face of new challenges and new situation, and combined with the actual situation of China, implementing the strong smart grid with UHV as the backbone network, coordinated development of power grid at all levels, and information, automation and interaction as the characteristics is the best choice; and in the smart grid, the use of wireless temperature sensor and wireless current sensor and other intelligent monitoring equipment to detect the state of the grid is also the key to ensure the realization of intelligent control of the grid. At present, according to the demand of smart grid, intelligent monitoring equipment will be widely popularized and applied, and in the outdoor suburb and other application scenarios without wired power supply, how to safely and stably power the monitoring equipment is the first problem to be faced by the wide application of intelligent monitoring equipment.

[0003] The traditional power supply methods for intelligent monitoring equipment mainly include the following: battery power supply method, laser power supply method, solar / wind power supply method, line magnetic ring power supply method and electric field coupling power supply method; however, the above power supply methods have the following defects: the battery power supply method cannot maintain the continuity of power supply; the laser power supply equipment is expensive, and must have a low-voltage end for power supply, the detection and maintenance workload is large, and the use range is limited; the solar / wind power supply cannot guarantee the continuity, and is greatly limited by weather conditions; the line magnetic ring power supply method has a certain working blind area, and it is difficult to obtain enough energy when the primary current is low; the electric field coupling power supply method has limited power; Chinese patent (CN104602406A) discloses an outdoor advertising board real-time monitoring system energy supply method and energy supply system, which judges which energy supply method is the best according to the real-time data information fed back by each sensor, and controls the corresponding energy supply device to work, so as to realize uninterrupted power supply of the outdoor advertising board real-time monitoring system. However, using sensors to detect environmental data to select the power supply mode will increase the overall size of the system, and the system uses a battery to directly power, and the battery also needs to be charged. For the intelligent monitoring equipment of the power grid, since the monitoring equipment and the corresponding power supply device are installed on the power grid line, if the power supply system of the comparative file is used, considering the heat generation of the power grid line itself is relatively high, therefore, the monitoring equipment and the power supply system will have a higher initial temperature under normal circumstances. If the charging power of the power supply device battery is greater than the discharging power, the battery will generate additional temperature, and the additional temperature generated plus the initial temperature will easily cause the temperature value of the power supply device to exceed the critical value, thereby affecting the service life of the power supply system, and the damage probability is also greater, so it cannot provide stable power supply for the monitoring equipment.

[0004] Therefore, we propose a device that can provide stable power supply for power line monitoring equipment. SUMMARY

[0005] In order to overcome the deficiencies in the background art, the present application discloses a comprehensive power supply device and method for power line monitoring equipment.

[0006] To achieve the above invention purposes, the present application adopts the following technical solutions: A comprehensive power supply device for power line monitoring equipment, The inductive power supply module is used to convert the electromagnetic energy emitted on the power grid line into electrical energy, and input the converted electrical energy into the power management module. The solar power supply module is used to convert solar energy into electrical energy, and input the converted electrical energy into the power management module. The power management module is used to store input electrical energy and supply power to the intelligent monitoring equipment of the power grid, and can balance the heat generation of the energy storage unit in the power management module when the power supply power is greater than the load consumption power.

[0007] Preferably, the inductive power supply module, The inductive electromagnetic ring is sleeved on the power grid line, which is used to convert the electromagnetic energy emitted on the power grid line into electrical energy. The impedance matching unit is used to detect the current and voltage flowing out of the inductive electromagnetic ring, and calculate the equivalent impedance of the power management module, and dynamically adjust its own impedance to realize impedance matching. The rectifier unit outputs the current output by the impedance matching unit to the power management module after rectification.

[0008] Preferably, the impedance matching unit includes a detection control circuit and an impedance matching circuit, wherein the detection control circuit is provided with a detection loop and a processing chip, the detection loop is used to detect the current and voltage output by the induction electromagnetic ring, and the processing chip first calculates the power and equivalent impedance of the power management module based on the current and voltage values, and then adjusts the resistance of the impedance matching circuit based on the calculated power and equivalent impedance results.

[0009] Preferably, the solar power supply module, Contains solar panels to convert solar energy into electricity; The maximum power tracking unit is used to maximize the output power of the solar panel and adjust the light receiving angle of the solar panel, and then output the converted electrical energy to the power management module.

[0010] Preferably, the power management module, A power management unit is included, which is used to select the power supply received from the inductive power supply module or the solar power supply module and supply power to the energy storage unit or the smart grid monitoring device; Energy storage units, used to store electrical energy and release their own energy to smart grid monitoring equipment; The energy balancing unit can consume the excess power of the energy storage unit when the power supply input power is greater than the load consumption power.

[0011] Preferably, the power management unit comprises Battery monitoring circuit, used to monitor power supply input power and load power consumption; The power management chip is used to send control signals based on the power input and load power consumption; The power control circuit controls whether the energy balance unit is started according to the control signal.

[0012] Preferably, the energy balancing unit is configured as an energy-consuming resistor.

[0013] A comprehensive energy supply method for transmission line monitoring equipment, comprising: S1. The inductive power supply module and the solar power supply module supply power to the power management module; S2. When the charging power of the power management module is greater than the power consumption of the load, the power management unit determines the remaining power and temperature of the energy storage unit; S3. When the temperature of the energy storage unit is greater than 45° and the remaining power is less than 90%, the charging power of the energy storage unit is reduced and the energy balancing unit is started; S4. When the temperature of the energy storage unit is greater than 45° and the remaining power is greater than 90%, only the energy balancing unit is activated; S5. When the temperature of the energy storage unit is less than 45°, and the remaining power is less than 90%, increase the charging power of the energy storage unit; S6. When the temperature of the energy storage unit is less than 45°, and the remaining power is greater than 90%, stop charging the energy storage unit, and start the energy balancing unit; S7. When the charging power of the power management module is equal to the consumption power of the load, maintain the current power supply state of the power management module; S8. When the charging power of the power management module is less than the consumption power of the load, determine the remaining power and temperature of the energy storage unit by the power management unit; S9. Stop charging the energy storage unit, and start the energy balancing unit when the temperature of the energy storage unit is greater than 45°.

[0014] Due to the adoption of the technical scheme as described above, the present application has the following beneficial effects: The present application discloses a comprehensive energy supply device and method for a power transmission line monitoring device, 1. By adopting the two modes of inductive power supply and solar power supply to comprehensively supply power to the power management module, the shortcomings of the two power supply modes can be complemented, so that the energy supply process is more stable; 2. The power management module can reduce the heat generation of the internal energy storage unit, reduce the damage probability of the power management module, and effectively prolong the service life of the overall power supply device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the present application; Figure 2 is a connection structure schematic view of the impedance matching unit; Figure 3 is a connection structure schematic view of the power management unit; Figure 4 is a circuit connection schematic view of the power management chip.

[0016] In the figure: 1, inductive power supply module; 11, inductive power taking magnetic ring; 12, impedance matching unit; 121, detection control circuit; 122, impedance matching circuit; 13, rectifier unit; 2, solar power supply module; 21, solar cell panel; 22, maximum power tracking module; 3, power management module; 31, power management unit; 311, battery monitoring circuit; 312, power management chip; 313, power control circuit; 32, energy storage unit; 33, energy balancing unit. DETAILED DESCRIPTION

[0017] The technical solutions of the present application will be described below with reference to the accompanying drawings of the embodiments of the present application. In the description, it should be understood that the orientation or position relationship indicated by terms such as "upper", "lower", "front", "back", "left", "right" and the like only corresponds to the accompanying drawings of the present application, and is for the convenience of describing the present application, and does not indicate or imply that the device or element to be indicated must have a particular orientation: Embodiment 1 is: In combination with the accompanying Figure 1 The comprehensive power supply device for the power transmission line monitoring equipment, The induction power supply module 1 is used to convert the electromagnetic energy emitted on the power grid line into electrical energy, and input the converted electrical energy into the power management module 3. The solar power supply module 2 is used to convert solar energy into electrical energy, and input the converted electrical energy into the power management module 3. The two power supply modes can complement each other, so that the power management module 3 has stable power input, and the power management module 3 can continuously supply power to the monitoring equipment, that is, the power supply process is also more stable. The power management module 3 is used to store the input electrical energy, and supply power to the intelligent monitoring equipment of the power grid, and when the power supply power is greater than the load consumption power, the heat generation of the energy storage unit 32 in the power management module 3 can be balanced, thereby effectively reducing the heat generation of the energy storage unit 32 in the power management module 3, enabling the power management module 3 to operate at a safe temperature, reducing the damage probability of the power management module 3, thereby improving the service life of the power management module 3, and ensuring the power supply stability of the overall power supply device. It should be noted that in the accompanying Figure 1 The load in the embodiment is the intelligent monitoring equipment.

[0018] Embodiment 2 is: On the basis of embodiment 1, the induction power supply module 1, The induction power supply module 1 comprises an induction power supply ring 11 sleeved on the power grid line, which is used to convert the electromagnetic energy emitted on the power grid line into electrical energy. The impedance matching unit 12 is used to detect the current and voltage flowing out of the induction power supply ring 11, and calculate the equivalent impedance of the power management module 3, and dynamically adjust the resistance value of itself to realize impedance matching. After the impedance matching unit 12 selects a suitable resistance value to realize impedance matching, the induction power supply module 1 can realize maximum power electrical energy output, and improve the efficiency of electrical energy output. The rectifier unit 13 rectifies the current outputted by the impedance matching unit 12 and outputs the rectified current to the power management module 3, and enables the current outputted by the induction power supply module 1 to be direct current, and charges the energy storage unit 32 in the power management module 3.

[0019] Embodiment 3 is: On the basis of embodiment 2, in combination with the attached Figure 2 The impedance matching unit 12 comprises a detection control circuit 121 and an impedance matching circuit 122, wherein the detection control circuit 121 is provided with a detection circuit and a processing chip, the detection circuit is used to detect the current and voltage outputted by the induction power supply electromagnetic ring 11, and the processing chip is used to firstly calculate the power and equivalent impedance of the power management module 3 according to the current and voltage values, and then adjust the resistance value of the impedance matching circuit 122 according to the calculated power and equivalent impedance results. The process of impedance matching is as follows: a. Firstly, the detection control circuit 121 calculates the power and equivalent impedance of the power management module 3 according to the following formulas: (1); (2); and are the voltage and current flowing through the induction power supply electromagnetic ring 11, respectively; b. Then the impedance matching circuit 122 increases the resistance value of itself by At this time, the equivalent impedance of the power management module 3 becomes ; c. Then the detection circuit measures the voltage and current flowing through the induction power supply electromagnetic ring 11 again, and the measured voltage and current are and ; d. According to formula (1), the power of the power management module 3 after adjustment can be obtained as ; e. If > , the impedance matching circuit 122 increases the resistance value of itself by again, and the process of impedance matching is completed, that is, the final equivalent impedance of the power management module 3 is ; f. If , the impedance matching circuit 122 reduces the resistance value of itself by , and the process of impedance matching is completed, that is, the final equivalent impedance of the power management module 3 is .

[0020] Embodiment 4 is: On the basis of embodiment 1, the solar power supply module 2,​ solar panel 21 for converting solar energy into electric energy; maximum power tracking unit 22 for maximizing the output power of the solar panel 21 and adjusting the light receiving angle of the solar panel 21, and then outputting the converted electric energy to the power management module 3, so as to ensure that the solar power supply module 2 can achieve the best energy conversion efficiency under different light conditions.

[0021] Embodiment 5 is: on the basis of Embodiment 1, the power management module 3, comprising a power management unit 31 for selecting to receive power supply from the inductive power supply module 1 or the solar power supply module 2, and supplying power to the energy storage unit 32 or the smart grid monitoring device; Since the power management unit 31 will only select one power supply module to charge the energy storage unit 32, the stability and safety of the overall energy supply device can be ensured; the energy storage unit 32 for storing electric energy and releasing the electric energy to the smart grid monitoring device; the energy balance unit 33 capable of consuming the excess power of the energy storage unit 32 when the power input is greater than the load consumption power; In addition, the load consumption power = the charging power of the energy storage unit 32 + the consumption power of the smart grid monitoring device; the power input is the power generation of the inductive power supply module 1, or the power generation of the solar power supply module 2.

[0022] Embodiment 6 is: on the basis of Embodiment 5, in combination with the attached Figure 3 , the power management unit 31 comprises a battery monitoring circuit 311 for monitoring the power input and the load consumption power; a power management chip 312 for sending a control signal according to the size of the power input and the load consumption power; a power control circuit 313 for controlling whether the energy balance unit 33 is started according to the control signal; It should be noted that, as shown in the attached Figure 4As shown, the power management chip 312 and the peripheral circuit are provided, the solar power supply module 2 is electrically connected with the PZ1 and GND pins of the power management chip 312, and the induction power supply module 1 is electrically connected with the PZ1 and PZ2 pins of the power management chip 312. When only the PZ1 pin of the power management chip 312 is electrified, it indicates that only the solar power supply module 2 has power input at this time, so the chip internally selects the solar power supply module 2 to charge; when the PZ1 and PZ2 pins of the power management chip 312 are electrified, it indicates that the induction power supply module 1 has power input at this time, or the induction power supply module 1 and the solar power supply module 2 both have power input, so the chip internally selects the induction power supply module 1 to charge. In addition, the power supply input power refers to the power of the power supply module charging the energy storage unit 32, that is, the charging power of the energy storage unit 32, and the load consumption power is the power of the intelligent monitoring device consuming the power of the energy storage unit 32, that is, the discharging power of the energy storage unit 32.

[0023] In addition, the energy balance unit 33 is provided as a power consumption resistor. The power consumption resistor consumes the excess power generated by the energy storage unit 32 by heating, so that the charging power and the discharging power of the energy storage unit 32 reach a balanced state, and the heat generated by the energy storage unit 32 remains at a normal level without generating additional heat. It should be noted that the power consumption resistor has a fixed value, that is, there is a maximum consumption power, but the power is generally set to be relatively large, so when the power supply input power is greater than the load consumption power, the energy balance unit 33 is turned on to consume the excess power, and the opening time of the energy balance unit 33 is controlled to balance, that is, the power supply power = the load power + the energy balance consumption power. In addition, the power consumption resistor is installed on the line tower of the power grid line and has a certain distance from the energy storage unit 32, so that the heat generated by the power consumption resistor does not affect the energy storage unit 32.

[0024] In addition, the energy balance unit 33 can also be provided as a cooling fan, and the excess power is used to drive the cooling fan to cool the energy storage unit 32, so as to consume the excess power, that is, to ensure that the charging power and the discharging power of the energy storage unit 32 reach a balance, and to reduce the temperature of the energy storage unit 32 and the overall energy supply device, thereby improving the service life of the energy supply device.

[0025] In particular, the power management chip 312 is of the model LTC3588.

[0026] Embodiment 7 is On the basis of the above-mentioned embodiments 1-6, a comprehensive energy supply method for a power transmission line monitoring device is further included, which comprises: S1. The induction power supply module 1 and the solar power supply module 2 supply power to the power management module 3; S2. When the charging power of the power management module 3 is greater than the consumed power of the load, the remaining power and temperature of the energy storage unit 32 are determined by the power management unit 31; S3. When the temperature of the energy storage unit 32 is greater than 45° and the remaining power is less than 90%, the charging power of the energy storage unit 32 is reduced, and the energy balancing unit 33 is started; S4. When the temperature of the energy storage unit 32 is greater than 45° and the remaining power is greater than 90%, only the energy balancing unit 33 is started; S5. When the temperature of the energy storage unit 32 is less than 45° and the remaining power is less than 90%, the charging power of the energy storage unit 32 is increased; S6. When the temperature of the energy storage unit 32 is less than 45° and the remaining power is greater than 90%, the charging of the energy storage unit 32 is stopped, and the energy balancing unit 33 is started; S7. When the charging power of the power management module 3 is equal to the consumed power of the load, the current power supply state of the power management module 3 is maintained; S8. When the charging power of the power management module 3 is less than the consumed power of the load, the remaining power and temperature of the energy storage unit 32 are determined by the power management unit 31; S9. The charging of the energy storage unit 32 is stopped, and the energy balancing unit 33 is started when the temperature of the energy storage unit 32 is greater than 45°.

[0027] The parts of the application not described in detail are part of the state of the art, and it is obvious for a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, and that it can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application; therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the application is defined by the attached claims and not by the above description, and it is intended to include all variations falling within the meaning and scope of the equivalent elements of the claims, and no figure reference in the claims should be considered as limiting the claims involved.

Claims

1. A comprehensive energy supply device for transmission line monitoring equipment, characterized by: It comprises an inductive power supply module (1) for converting electromagnetic energy emitted from a power grid line into electrical energy and inputting the converted electrical energy into a power management module (3); A solar power supply module (2) is used to convert solar energy into electrical energy and input the converted electrical energy into a power management module (3); The power management module (3) is used to store input electric energy and supply power to the intelligent monitoring equipment of the power grid, and balance the heat generated by the energy storage unit (32) in the power management module (3) when the power supply power is greater than the load consumption power.

2. The integrated energy supply device for power transmission line monitoring equipment according to claim 1, characterized in that: The inductive power supply module (1) It comprises an induction electromagnetic ring (11) mounted on the power grid line, and used for converting electromagnetic energy emitted from the power grid line into electrical energy; An impedance matching unit (12) is used to detect the current and voltage flowing out of the induction electromagnetic ring (11), calculate the equivalent impedance of the power management module (3), and dynamically adjust its own impedance to achieve impedance matching; The rectifier unit (13) rectifies the current output by the impedance matching unit (12) and outputs the rectified current to the power management module (3).

3. The integrated energy supply device for power transmission line monitoring equipment according to claim 2, characterized in that: The impedance matching unit (12) comprises a detection control circuit (121) and an impedance matching circuit (122), wherein the detection control circuit (121) is provided with a detection circuit and a processing chip, the detection circuit is used to detect the current and voltage output by the induction electromagnetic ring (11), and the processing chip first calculates the power and equivalent impedance of the power management module (3) based on the current and voltage values, and then adjusts the resistance of the impedance matching circuit (122) based on the calculated power and equivalent impedance results.

4. The integrated energy supply device for power transmission line monitoring equipment according to claim 1, characterized in that: The solar power supply module (2) comprising a solar panel (21) for converting solar energy into electrical energy; The maximum power tracking unit (22) is used to maximize the output power of the solar panel (21) and adjust the light receiving angle of the solar panel (21), and then output the converted electric energy to the power management module (3).

5. The integrated energy supply device for power transmission line monitoring equipment according to claim 1, characterized in that: The power management module (3) It comprises a power management unit (31) for selectively receiving power from an inductive power supply module (1) or a solar power supply module (2), and supplying power to an energy storage unit (32) or a smart grid monitoring device; an energy storage unit (32) for storing electrical energy and releasing its own electrical energy to the smart grid monitoring device; The energy balancing unit (33) consumes excess power of the energy storage unit (32) when the power input is greater than the load power consumption.

6. The integrated energy supply device for power transmission line monitoring equipment according to claim 5, characterized in that: The power management unit (31) comprises A battery monitoring circuit (311) is used to monitor the power input and load power consumption; A power management chip (312) is used to send a control signal according to the magnitude of the power input and the power consumed by the load; The power control circuit (313) controls whether the energy balance unit (33) is started according to the control signal.

7. The integrated energy supply device for power transmission line monitoring equipment according to claim 5, characterized in that: The energy storage unit (32) is configured as a lithium battery.

8. The integrated energy supply device for power transmission line monitoring equipment according to claim 5, characterized in that: The energy balancing unit (33) is configured as an energy dissipation resistor.

9. The integrated energy supply device for power transmission line monitoring equipment according to claim 5, characterized in that: The energy balancing unit (33) is configured as a cooling fan.

10. A comprehensive energy supply method for transmission line monitoring equipment, characterized in that: include: S1. The inductive power supply module (1) and the solar power supply module (2) supply power to the power management module (3); S2. When the charging power of the power management module (3) is greater than the power consumption of the load, the power management unit (31) determines the remaining power and temperature of the energy storage unit (32); S3. When the temperature of the energy storage unit (32) is greater than 45° and the remaining power is less than 90%, the charging power of the energy storage unit (32) is reduced and the energy balancing unit (33) is started at the same time; S4. When the temperature of the energy storage unit (32) is greater than 45° and the remaining power is greater than 90%, only the energy balancing unit (33) is started; S5. When the temperature of the energy storage unit (32) is less than 45° and the remaining power is less than 90%, the charging power of the energy storage unit (32) is increased; S6. When the temperature of the energy storage unit (32) is less than 45° and the remaining power is greater than 90%, charging of the energy storage unit (32) is stopped and the energy balancing unit (33) is started at the same time; S7. When the charging power of the power management module (3) is equal to the power consumption of the load, the current power supply state of the power management module (3) is maintained; S8. When the charging power of the power management module (3) is less than the power consumption of the load, the power management unit (31) determines the remaining power and temperature of the energy storage unit (32); S9. Stop charging the energy storage unit (32), and when the temperature of the energy storage unit (32) is greater than 45°, start the energy balancing unit (33).

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