KR102041120B1 - Power source type illumination operating method - Google Patents

Abstract

The present invention relates to a power supply lighting device and a method of operating the same, which are supplied with power by using a magnetic field induced in a power cable of an ultra high voltage power installation, and display an abnormality of a power line based on a temperature difference between phases. To this end, the power lighting device according to an embodiment of the present invention includes a power supply unit for supplying power using a magnetic field induced in the power cable; And receiving power from the power supply unit, calculating a phase difference between phase A cable, phase B cable, and phase C cable included in the power cable, and comparing the phase difference between the phase temperature and a predetermined threshold value. It characterized in that it comprises a processing unit for diagnosis.

Description

How the power lighting device works {POWER SOURCE TYPE ILLUMINATION OPERATING METHOD}

The present invention relates to a power supply lighting apparatus using magnetic field induction and a method of operating the same, and more particularly, to receive power using a magnetic field induced from a power cable of an ultra high voltage power installation, and to determine whether a power line is abnormal based on a temperature difference between phases. The present invention relates to a power lighting device for displaying and a method of operating the same.

In today's ultra high voltage power installations, power is transmitted in the form of power overhead transmission lines and underground transmission lines. Here, the underground transmission line is configured to supply power by forming a line in the form of a pipeline, a direct sale, or a power outlet.

Here, in the case of the electric power passage, the power supply is doubled for the safety of the operator, and the electric power is supplied to the lamp installed above the passage. However, when the power supply of the lamp in use is lost, there is a problem in that it is impossible to secure the field of view if the worker does not have a portable flashlight separately because there is no separate light for evacuation of the worker working in the power sphere. do. In other words, if the power supply of the light is lost in the passageway, it is impossible to secure the visibility of the worker, it is impossible to evacuate safely, thereby increasing the possibility of a safety accident. Accordingly, in the related art, a technique of utilizing a storage battery is used in preparation for the loss of a power supply. However, a technology for charging a battery in a normal state using such a battery, and supplying electric power stored in the battery in an emergency to a lamp, for example, when the length of the power sphere is a long distance (maximum: 6.8 km) section, the DC line and It is difficult to use earnings due to the economic deterioration of DC lamp configuration.

There is also a technique for attaching the luminous cap to the passage side of the cable support hanger for the safety of the operator. Through such a luminous cap, the operator can easily evacuate the power tool even in an emergency. However, due to the feature of the luminous cap attached to the end of the cable support, there is a problem of loss due to the collision of the operator, and the luminous material contained in the luminous cap is a chemical product, there is a decrease in luminescence over time. . In addition, the operator checks the cables from time to time to check the status of the power line cables in the power port passage.

In this regard, there is a Korean Patent No. 1298973 entitled "High Voltage Induction Motor Comprehensive Online Condition Diagnosis Device and Method".

The present invention provides a power lighting device and a method of operating the same, which supplies power using an induction magnetic field induced by a power cable existing in a power sphere, and intuitively informs a worker of a power cable. There is this.

Power supply lighting apparatus of the present invention for solving the above problems is supplied with power using a magnetic field induced in the power cable of the ultra-high voltage power equipment, and functions to display whether the power line abnormality based on the temperature difference between phases, To this end, a power supply unit for supplying power using a magnetic field induced in the power cable; And receiving power from the power supply unit, calculating a phase difference between phase A cable, phase B cable, and phase C cable included in the power cable, and comparing the phase difference between the phase temperature and a predetermined threshold value. It characterized in that it comprises a processing unit for diagnosis.

In addition, the processor may illuminate the diagnosed state of the power cable with a predetermined color through the lighting unit.

In addition, the power supply unit may generate a DC constant voltage using the induced current generated from the magnetic field, and drive the lighting unit at the DC constant voltage.

In addition, the power supply unit is composed of a single-phase full-wave rectifying circuit, the induction coil for generating an induced current from the magnetic field; A diode bridge circuit connected to the induction coil and converting the induced current into a direct current; And a constant voltage generation circuit generating a DC constant voltage based on the DC current.

The processor may diagnose a state of the power cable by comparing the first threshold value, the second threshold value, and the phase difference between phases, and the second threshold value may be greater than the first threshold value.

In addition, when the inter-phase temperature difference is less than the first threshold value, the processor may determine the power cable as a normal state, and when the inter-phase temperature difference is greater than or equal to the second threshold value, the processor may determine the power cable as an abnormal state.

In addition, when the temperature difference between the phases is greater than or equal to the first threshold and less than the second threshold, the processor may determine the power cable as the attention state.
The method may further include sensing, by the temperature sensor unit, temperatures for each of the A-phase cable, the B-phase cable, and the C-phase cable. The power cable is determined to be in an abnormal state, the lighting unit emits yellow light,
When the phase difference between the phases is greater than or equal to the first threshold and less than the second threshold, the processor determines the power cable as a attention state, and the illumination unit emits red light.

In addition, the power lighting device according to an embodiment of the present invention may further include an auxiliary power supply charged through the power supplied from the power supply, the auxiliary power supply may be configured to include a battery.

In addition, the power lighting device according to an embodiment of the present invention may further comprise a temperature sensor unit for sensing the temperature for each of the A-phase cable, B-phase cable and C-phase cable.

In addition, the temperature sensor unit may be configured to include an RTD temperature sensor.

In order to solve the above problems, the operation method of the power supply lighting device that is supplied with power using a magnetic field induced in the power cable of the ultra-high voltage power equipment, and displays the abnormality of the power line based on the temperature difference between phases is Supplying power by a power supply unit by using a magnetic field induced in a power cable; Calculating a temperature difference between phases of the A-phase cable, the B-phase cable, and the C-phase cable included in the power cable, by a processing unit receiving power; And diagnosing, by the processor, a state of the power cable through comparison between the phase difference between the phases and the predetermined threshold values.

In addition, the method of operating the power lighting device according to an embodiment of the present invention, after the step of diagnosing the state of the power cable, the state of the power cable diagnosed through the processing unit by the processing unit is illuminated with a predetermined color through the lighting unit. It may further comprise the step.

In addition, the power supply unit may generate a DC constant voltage using the induced current generated from the magnetic field, and drive the lighting unit at the DC constant voltage.

The diagnosing the state of the power cable may diagnose the state of the power cable by comparing the first threshold value and the second threshold value with the phase difference between phases, and the second threshold value may be greater than the first threshold value. .

The diagnosing the state of the power cable may determine the power cable as a normal state when the phase difference is less than the first threshold value, and determine the power cable as an abnormal state when the phase difference is more than the second threshold value. have.

In the diagnosing a state of the power cable, when the temperature difference between the phases is greater than or equal to the first threshold value and less than the second threshold value, the power cable may be determined as the attention state.

The method may further include sensing, by the temperature sensor unit, temperatures for each of the A-phase cable, the B-phase cable, and the C-phase cable. The power cable is determined to be in an abnormal state, the lighting unit emits yellow light,
When the phase difference between the phases is greater than or equal to the first threshold and less than the second threshold, the processor determines the power cable as a attention state, and the illumination unit emits red light.

In addition, the step of sensing the temperature for each of the A-phase cable, B-phase cable and C-phase cable may be made through an RTD temperature sensor.

According to the power source lighting apparatus and the operation method thereof of the present invention, there is an effect that the phase temperature of the power cable can be monitored, and that the operator can intuitively know the status information of the power cable.

In addition, according to the power lighting device and the operation method thereof of the present invention, since the lighting unit is powered by using a magnetic field induced in the power cable, the safety of the operator can be ensured, where the high brightness LED is mounted Thus, there is an effect that can be used semi-permanently without having to replace periodically.

1 is a block diagram of a power lighting device according to an embodiment of the present invention.
2 is a block diagram of a processor included in a power lighting device according to an embodiment of the present invention.
3 is a circuit diagram of a power lighting device according to an embodiment of the present invention.
4 is a circuit diagram of a power supply unit included in a power lighting device according to another embodiment of the present invention.
5 is a flowchart illustrating a method of operating a power lighting device according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Here, the repeated description, well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention, and detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more completely describe the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.

Hereinafter, the power lighting device 100 according to the embodiment of the present invention will be described.

1 is a block diagram of a power lighting device 100 according to an embodiment of the present invention. Power lighting device 100 according to an embodiment of the present invention is supplied with power using a magnetic field induced in the power cable of the ultra-high voltage power equipment, and functions to display whether the power line is abnormal based on the temperature difference between the phases. To this end, the power lighting device 100 according to an embodiment of the present invention, the power supply unit 110, the temperature sensor unit 120, the processing unit 130, the lighting unit 140, the storage unit 150 and the auxiliary power supply 160 It may be configured to include). Hereinafter, each configuration included in the power lighting device 100 according to an embodiment of the present invention will be described.

The power supply unit 110 functions to supply power to the power lighting device 100 of the present invention by using a magnetic field induced by the power cable. Here, the power supply unit 110 may be configured as a single phase full-wave rectifier circuit. In detail, the power supply unit 110 generates an induction current from the magnetic field using an induction coil, converts the induction current into a DC current, and generates a DC constant voltage using the converted current. The DC constant voltage generated in this way is used to drive the power lighting device 100, that is, the processing unit 130 and the lighting unit 140 which will be described below.

As described above, the power lighting device 100 according to an embodiment of the present invention may further perform a state diagnosis on the power cable. Here, the principle of performing a status diagnosis on the power cable is as follows. For example, when the power cable is in a normal state, that is, when the A-phase cable, the B-phase cable, and the C-phase cable are in normal state, the conductor, current, voltage, etc. of these cables are at the same temperature due to the same characteristics. The car rarely occurs. On the other hand, when an abnormality, for example, breakdown, overcurrent or partial discharge occurs in one or more of these cables, a temperature difference between the cables occurs. Accordingly, the power lighting device 100 according to an embodiment of the present invention performs temperature sensing of the cables through the temperature sensor unit 120 and the calculation of the phase difference between the phases through the processor 130, which will be described below.

The temperature sensor unit 120 functions to detect temperatures for each of the A-phase cable, the B-phase cable, and the C-phase cable. In FIG. 1, the temperature sensor unit 120 is illustrated as being connected to each of the A-phase cable, the B-phase cable, and the C-phase cable to sense the temperature, but may be attached or positioned to perform the function of sensing the temperature. have. In addition, the temperature sensor unit 120 may include an RTD temperature sensor. Here, the reason why the RTD temperature sensor is used for the temperature sensor unit 120 is that the RTD temperature sensor can sense the temperature change with respect to the power cable sensitively, and the measurement accuracy is high. In addition, platinum, copper, or nickel is mainly used as the metal material of the RTD temperature sensor. Due to the characteristics of these materials, the change in electrical resistance with temperature is linear, light in weight, and physical and chemical properties are different. Excellent advantages exist. However, the temperature sensor unit 120 is not limited to only the RTD temperature sensor, but may include various sensors.

The processor 130 receives power from the power supply unit 110 and calculates a phase difference between phases of the A-phase cable, the B-phase cable, and the C-phase cable. As described above, the reason for calculating the temperature difference between the phases through the processor 9130 is for diagnosing the state of the power cables, that is, the phase A cable, the phase B cable, and the phase C cable.

Thereafter, the processor 130 performs a comparison between the phase difference between the phases and the predetermined threshold values. Here, it is assumed that the preset thresholds are stored in the storage 150. Further, the thresholds are assumed to be a first threshold value and a second threshold value, where the second threshold value is higher than the first threshold value.

That is, when the temperature difference between the phases is less than the first threshold value, the processor 130 may determine the power cable as a normal state. In addition, when the temperature difference between the phases is equal to or greater than the second threshold value, the processor 130 may determine the power cable as an abnormal state. Lastly, when the temperature difference between the phases is greater than or equal to the first threshold and less than the second threshold, the processor 130 may determine the power cable as the attention state.

Here, assume that the first threshold value is 2 ° C., and the second threshold value is 4 ° C. For example, if the phase difference calculated by the processor 130 is 1 ° C., the processor 130 may determine the power cable as a normal state. In addition, when the phase difference calculated by the processor 130 is 3 ° C., the processor 130 may determine the power cable as a attention state. In addition, when the phase difference calculated by the processor 130 is 5 ° C., the processor 130 may determine the power cable as an abnormal state.

In addition, the processor 130 may further detect an abnormal state with respect to the power lighting device 100 of the present invention. That is, the processor 130 may further detect an abnormal state with respect to the power supply unit 110, the temperature sensor unit 120, and the lighting unit 140, which will be described below, through a predetermined algorithm.

The lighting unit 140 is driven by the power supplied from the power supply unit 110 to emit light. In detail, the lighting unit 140 functions to illuminate the state of the power cable with a predetermined color through the control of the processing unit 130. Here, the preset color may be, for example, red, yellow, and green. For example, when the processor 130 determines that the power cable is in a normal state, the lighting unit 140 may emit green light. In addition, when the processor 130 determines the state of the power cable as the attention state, the lighting unit 140 may emit yellow light. Finally, when the processor 130 determines that the power cable is in an abnormal state, the lighting unit 140 may emit red light. Here, even when it is determined that the processing unit 130 detects an abnormality in the power lighting device 100 according to the embodiment of the present invention, the lighting unit 140 may emit red light. Here, the color that can be emitted through the lighting unit 140 is not limited to red, yellow, and green, and may be applied to various numbers of colors according to circumstances and setting criteria.

As described above, according to the state of the power cable or the power lighting device 100 of the present invention, the operator through the lighting unit 140 for emitting light of different colors to the power cable or the power lighting device 100 itself. The operator can easily and intuitively know whether there is an abnormality, so that the operator does not have to perform a cable check through additional equipment. In addition, the operator's field of view can be secured through the light generated through the lighting unit 140, and this method has a semi-permanent advantage because a separate luminous material is not used. In addition, the above-described lighting unit 140 further has the advantage of operating in a non-powered manner.

In addition, the lighting unit 140 has been mentioned as a use for displaying the state of the induction lamp and the power cable for ensuring the safety of the operator, it may be further used for lighting by mounting a high brightness LED inside.

The auxiliary power supply 160 is normally charged through the power supplied from the power supply 110, and for this purpose, the auxiliary power supply 160 includes a battery. The auxiliary power supply unit 160 may be charged through the power supplied from the power supply unit 110 in normal times, and may supply power, which is normally charged in an emergency, to the power lighting device 100 according to an embodiment of the present invention. Accordingly, the power supply lighting apparatus 100 according to an embodiment of the present invention can be operated well in normal and emergency.

2 is a block diagram of the processing unit 130 included in the power lighting device 100 according to an embodiment of the present invention. As described above, the processor 130 is supplied with power through the power supply unit, and based on the temperature of the phase-specific cables detected by the temperature sensor unit 120, the phase difference between the phase A cable, phase B cable and phase C cable between the phase cable Function to operate. In addition, the diagnosis of the power cable is performed by comparing the temperature difference between the phases and the predetermined threshold value, and the display unit 140 functions to inform the operator of the power cable status. For the above-described function, the processor 130 may include an amplification module 131, an A / D converter 132, and a temperature difference calculation module 133. Description of each component included in the processing unit 130 is made below.

The amplification module 131 amplifies the temperature signal for the power cable detected through the temperature sensor unit 120. That is, the amplification module 131 amplifies the temperature information for the power cables (phase A cable, phase B cable and phase C cable) detected through the temperature sensor 120 for the processing described below. .

The A / D converter 132 converts the amplified signal amplified by the amplifying module 131 into a digital signal. Through this, the amplified analog signal is converted into a digital signal, thereby enabling various digital processing and inducing accurate result values.

The temperature difference calculation module 133 calculates a temperature difference between phases based on the digital signals converted through the A / D converter 132, that is, temperature information on the A-phase cable, the B-phase cable, and the C-phase cable.

When the calculation of the phase difference between the phases for the A-phase cable, the B-phase cable, and the C-phase cable is completed, the temperature difference calculation module 133 further performs a comparison between the phase difference and the preset threshold. As mentioned with reference to FIG. 1, the preset thresholds here are assumed to be a first threshold value and a second threshold value, where the second threshold value is assumed to be higher than the first threshold value.

That is, when the phase difference between the phases is less than the first threshold value, the temperature difference calculating module 133 may determine the power cable as a normal state. In addition, when the temperature difference between the phases is greater than or equal to the second threshold value, the temperature difference calculating module 133 may determine the power cable as an abnormal state. Lastly, when the phase difference between the phases is greater than or equal to the first threshold and less than the second threshold, the temperature difference calculating module 133 may determine the power cable as a caution state.

When the diagnosis of the power cable is completed through the above-described process, the temperature difference calculation module 133 may inform the worker of various states of the power cable through the lighting unit 140. That is, by displaying the green light when the power cable is determined to be in a normal state, the yellow light when the power cable is determined to be in a caution state, and the red light when the power cable is determined to be in an abnormal state, the power is displayed to the operator. Status information about the cable can be informed. In addition, in the above description, the number of thresholds is described as two, and the color of light emitted through the lighting unit is described as three, but this is only an example and may be applied to various numbers and colors.

3 is a circuit diagram of a power lighting device according to an embodiment of the present invention. 4 is a circuit diagram of a power supply unit included in a power lighting device according to an embodiment of the present invention.

As described above, in the power supply lighting apparatus according to the embodiment of the present invention, the input portion of the power supply unit is composed of a single-phase propagation current circuit, and has a structure for generating a DC constant voltage in a capacitor at a rear end thereof. That is, an induction current is generated based on the magnetic field in the induction coil on the upper left side, and these induction currents are converted into direct current through a plurality of zener diodes, and a DC constant voltage is generated through the direct current. The generated DC constant voltage may be transmitted to the high brightness LED, that is, the lighting unit to supply power to the lighting unit.

In addition, the power lighting device according to an embodiment of the present invention is configured to include an auxiliary power supply for emergency use, and the configuration for charging the battery included in the auxiliary power supply is shown in FIG.

A circuit configured to maintain a constant voltage in the constant voltage generation circuit is shown in FIG. 4 because the current that is always induced varies from time to time depending on the load condition. That is, an induction current is generated based on the magnetic field in the induction coil and rectified through the diode bridge circuit. The DC constant voltage may be generated in the DC constant voltage generator based on the rectified DC current. In addition, as shown in FIG. 4, an overcurrent and overvoltage prevention circuit is added, so that there is an effect that the power can be safely supplied even under load fluctuation or large current generation.

5 is a flowchart illustrating a method of operating a power lighting device according to an embodiment of the present invention. As mentioned with reference to Figure 1, the power lighting device according to an embodiment of the present invention is supplied with power using a magnetic field induced in the power cable of the ultra-high voltage power equipment, and whether the power line is abnormal based on the temperature difference between the phases Function to display. Hereinafter, referring to FIG. 5, a method of operating a power lighting apparatus according to an embodiment of the present invention will be described.

First, a step (S110) of supplying power by using a magnetic field induced by a power cable by a power supply unit is performed. As described above, the power supply unit generates an induction current from the magnetic field using an induction coil, converts the induction current into a direct current, and generates a DC constant voltage using the converted current. The step S110 serves to supply the DC constant voltage generated through the above-described power supply unit to the processing unit and the lighting unit mentioned below. As described above, the DC constant voltage generated in step S110 may be further supplied to the auxiliary power supply.

Thereafter, a step (S120) of measuring the temperature of the three-phase cable, that is, the phase A cable, the phase B cable, and the phase C cable included in the power cable is performed. S120 may be performed using, for example, an RTD sensor.

Thereafter, a step S130 of calculating a temperature difference between phases between the phase A cable, the phase B cable, and the phase C cable included in the power cable is performed. As described above, the step S120 and the step S130 are performed because the diagnosis of the cable in the operating method of the power lighting device according to an embodiment of the present invention is made based on the phase difference between the cables.

Thereafter, the step S140 of comparing the phase difference calculated in operation S130 with the first threshold value is performed. If it is determined in step S140 that the temperature difference between the phases is less than the first threshold value, control is transferred to step S150, and in step S150, the power cable is determined to be normal through the processing unit. Otherwise, control passes to a step S160.

Step S160 is a step of determining whether the temperature difference between the phases is greater than or equal to the first threshold value and less than the second threshold value. If it is determined in step S160 that the phase difference is greater than or equal to the first threshold value and less than the second threshold value, control is passed to step S170, and in step S170, the power cable is determined to be a caution state by the processing unit. Otherwise, control is passed to step S180, and in step S180 determines the power cable to the abnormal state through the processor. Here, it is assumed that the second threshold is greater than the first threshold.

Step S190 is a step of illuminating the state of the power cable in a predetermined color through the lighting unit based on the determination result determined in steps S150, S170 and S180. Through this step S190, the operator can intuitively determine the state of the cable. In addition, the lighting unit mentioned in step S190 is driven by receiving the power generated in step S110.

As described above, the best embodiment has been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not used to limit the scope of the present invention as defined in the meaning or claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: power lighting unit 110: power unit
120: temperature sensor unit 130: processing unit
131: amplification module 132: A / D converter
133: temperature difference calculation module 140: lighting unit
150: storage unit 160: auxiliary power unit

Claims (3)

As a method of operating a power lighting device by receiving power by using a magnetic field induced in a power cable of an ultra high voltage power installation,
Supplying power using a magnetic field induced in the power cable;
The DC constant voltage is generated using the induced current generated from the magnetic field, and the lighting unit is driven at the DC constant voltage.
Calculating a phase difference between phases A, B, and C of the power cable included in the power cable by the processor for supplying power to display an abnormality of a power line based on a phase difference between phases; And
Diagnosing a state of the power cable by comparing the temperature difference between the phases and a predetermined threshold value;
Diagnosing the state of the power cable,
The state of the power cable is diagnosed by comparing a first threshold value and a second threshold value with the phase difference between the phases, and the second threshold value is greater than the first threshold value.
Diagnosing the state of the power cable,
When the temperature difference between the phases is less than the first threshold value, the processor determines that the power cable is in a normal state, and the lighting unit emits green light,
When the phase difference between the phases is greater than or equal to the second threshold value, the processor determines that the power cable is in an abnormal state, and the illumination unit emits yellow light,
When the phase difference between the phase is greater than or equal to the first threshold and less than the second threshold, the processor determines the power cable to be in a caution state, and the lighting unit emits red light. Way.
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