KR20130137370A - An integrating incoming and distributing board for monitoring the arc, partial discharge, and temperature and the controling method therof - Google Patents

Abstract

The present invention relates to an integrated switchgear for monitoring arc, partial discharge and temperature, and a control method of the switchgear using the same, and protects the switchgear protection relay at the integrated receiver for temperature, arc, partial discharge, the precursor of the early accident It is related to arc, partial discharge, and temperature monitoring integrated switchgear, which can prevent the accident by informing the manager of the initial change of the accident by measuring from the integrated instrument.
Accordingly, the present invention, the detection unit for detecting the temperature and arc, partial discharge in the switchboard; And an integrated interface unit that implements the temperature detected by the detector and whether arcing occurs within the same interface with respect to the leakage current. A control unit that controls the switchboard when the risk is determined based on whether the temperature detected by the detector and whether the arc is generated and the leakage current detected by the integrated interface are mutually interoperable on the same interface. Provides integrated switchgear with partial discharge and temperature monitoring.

Description

An Integrating Incoming and Distributing Board for Monitoring the Arc, Partial Discharge, and Temperature and The Controling Method therof}

The present invention relates to an integrated switchgear for monitoring arc, partial discharge and temperature, and a control method of the switchgear using the same, and protects the switchgear protection relay at the integrated receiver for temperature, arc, partial discharge, the precursor of the early accident It is related to arc, partial discharge, and temperature monitoring integrated switchgear, which can prevent the accident by informing the manager of the initial change of the accident by measuring from the integrated instrument.

As is well known, the distribution board is a switch board that supplies the power drawn from the distribution lines to a plurality of feeders through separate MCCBs.

In general, a switchgear in a house or factory that uses electricity refers to receiving and distributing electricity. For example, a switchgear in an apartment electrical room has a voltage of 22,900V in three phases and 220V in a single phase. to be.

Accordingly, the switchgear requires machinery and protective equipment for supplying the extra high voltage to the low pressure and then distributing the building to each building, which includes such equipment. These high voltage distribution boards include LBS board (special high voltage cable connection and disconnect switch), MOF board (transformation transformer base for electricity, electric meter), PT board (transformer for instrument), VCB panel (special high blocking base, auto shut off when abnormal) ), Transformer board (transformer installation), low voltage plate (safely distributes the lowered electricity to each apartment building, detects leakage) and generator board (generator operation control).

In such a switchgear, an arc is generated by a high voltage current flowing through a circuit because a high voltage current is drawn in and out. Therefore, in order to prevent damage to the circuit of the switchgear system when such an arc is generated, a stabilizer is provided, such as monitoring the arc generation and tripping the circuit breaker of the switchgear circuit when there is an arc generation or a temperature rise above a predetermined reference value.

However, the circuit in the existing switchgear simply detects the danger of arc generation, and determines the danger without knowing the temperature measurement, the leakage current value measurement and the arc generation degree in detail.

The circuit risk of the switchgear can be determined not only by the occurrence of arc, but also by the temperature inside the circuit and the value of the leakage current. As a result, risks cannot be clearly determined and the authenticity of judgments cannot be trusted.

The present invention is to solve the problems of the prior art as described above, the object of the present invention is to protect the switchboard protection relay in the receiver unit integrating temperature, arc, partial discharge, by checking and confirming the precursor of the early accident early In addition, it provides an integrated switchgear for arc, partial discharge and temperature monitoring that can be measured by an integrated instrument to inform managers of changes in the early stages of an accident and prevent accidents.

In order to achieve the above-mentioned object, the present invention will be realized by an embodiment having the following constitution as a preferred embodiment. The present invention provides the following technical constructions to solve the above problems.

According to an embodiment of the present invention, the present invention provides a detection unit for detecting the temperature, arc, partial discharge in the distribution panel; And an integrated interface unit that implements the temperature detected by the detector and whether arcing occurs within the same interface with respect to the leakage current. A control unit that controls the switchboard when the risk is determined based on whether the temperature detected by the detector and whether the arc is generated and the leakage current detected by the integrated interface are mutually interoperable on the same interface. Provides integrated switchgear with partial discharge and temperature monitoring.

The detection unit, the temperature measuring unit for measuring the temperature inside the switchgear; And an arc detector to detect whether an arc is generated.

In addition, the arc detection unit, an optical sensor for detecting the generation of the arc by detecting the light inside the switchboard; And a PD sensor for detecting an arc or partial discharge.

In addition, the optical sensor, the light detection unit for detecting whether the light generation; A cable transferring a signal when light is detected from the light sensing unit; And a body portion coupled to the light sensing portion and supporting the cable and the light sensing portion.

Preferably, the PD sensor, the arc detection unit for detecting whether the partial discharge or the arc; Insulator which is an insulator which blocks the flow of electric current outside the PD sensor when the arc is generated; And a signal output unit formed at the end of the insulator and outputting a partial discharge or arc generation signal.

According to another embodiment of the present invention, the integrated interface unit, the leakage current detection unit for detecting a leakage current; A current converter for converting current when an overcurrent flows; And an overcurrent protection unit that prevents the circuit from being damaged due to the overcurrent. It provides an integrated switchgear with an arc, partial discharge, and temperature monitoring.

The control unit, the arc protection monitor for continuously monitoring whether the arc occurs in the switchgear; And a control module that detects a leakage current, a temperature value, a partial discharge, and an arc generation received from the arc protection monitor unit and controls the switchgear as a whole by interworking them.

In addition, the integrated interface unit, by interlocking the leakage current measured by the leakage current detection unit, the temperature, arc, and partial discharge measured by the detection unit to the arc protection monitor unit by mutual measurement and mutual measurement and determine the fundamental noise portion Determine if it is discharged.

The integrated interface unit may further include a switching switch unit for blocking an overcurrent from the current converter when a leakage current is generated.

In addition, the present invention preferably further comprises a switch gear for operating the switch unit.

According to another embodiment of the present invention, the present invention detects the leakage current through the integrated interface and at the same time monitor the arc, partial discharge and temperature in the detector, and simultaneously interlock the measured leakage current with temperature and arc Based on the measured data, the control unit monitors the integrated switchgear as a whole to provide a control method of the switchgear to determine whether there is a failure.

The controller may determine whether the arc generated based on the simultaneously measured leakage current, temperature, and arc data is basic noise or partial discharge.

The controller may be configured to generate an alarm indicating that a dangerous state is obtained when the calculated value exceeds the reference value by interlocking the data of the leakage current, the temperature, and the arc simultaneously measured.

Preferably, the controller is configured to trip the circuit breaker when the numerical value calculated by interworking the simultaneous measured leakage current, temperature, and arc data exceeds a set value.

INDUSTRIAL APPLICABILITY As described above, the present invention can achieve the following effects according to the above-described problem solving means and the construction and operation to be described later.

In order to prevent an incorrect arc accident or an accident caused by a temperature sensor, the present invention simultaneously detects leakage current, temperature, and arc generation using an integrated switchgear, and interoperates with each other to determine whether a switchgear system is in danger. You can monitor immediately.

In addition, the present invention, by measuring the temperature and leakage current at the same time switchgear system at the same time by interlocking the numerical value, so that the circuit breaker can be tripped immediately when the reference value is exceeded, it is possible to accurately and fast system control, and fine before the accident Even changes can be checked to prevent major accidents.

Accordingly, the present invention includes a sensor for temperature and an arc in the power receiving unit or the distribution unit, and has an integrated interface of temperature and arc so that the mutual measurement results can be linked to each other.

1 is a block diagram showing a control system of an integrated switchgear according to the present invention.
2 is a circuit schematic diagram illustrating a circuit of an integrated switchgear according to the present invention;
3 is a view showing an optical sensor included in the arc detection unit of the present invention.
4 is a view showing a PD sensor included in the arc detection unit of the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the arc, partial discharge and temperature monitoring integrated switchgear and a switchgear control method using the same according to the present invention will be described in detail.

Prior to this, terms and words used in the present specification and claims should not be construed as being limited to ordinary or dictionary terms, and the inventor should appropriately define the concept of the term to describe its invention in the best way The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

The present invention implements a processor (control unit) that detects an arc or partial discharge through an optical sensor and a PD sensor, and simultaneously measures leakage current to process the integrated data through an integrated interface to distinguish basic noise from basic noise. Through this, the present invention measures the temperature, the arc, and the partial discharge of the switchgear system, respectively, so in the case of an arc accident, it often works even if the camera flashes. And immediately determine the risk of the system.

Accordingly, the detection unit of the present invention measures the arc or partial discharge in the arc and PD detection unit, and checks whether or not the temperature abnormality in the temperature sensor unit. In addition, the integrated interface detects the current leaking from the circuit in the leakage current detection unit, and interlocks data measured by the temperature measuring unit and the detection unit to open each problem. Will be displayed.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to FIGS. 1 to 4. 1 is a block diagram illustrating a control system of an integrated switchgear according to the present invention, FIG. 2 is a circuit diagram illustrating a circuit of an integrated switchgear according to the present invention, and FIG. 3 is an optical sensor included in an arc detector of the present invention. 4 is a view showing a PD sensor included in the arc detection unit of the present invention.

According to an embodiment of the present invention, the present invention provides a detection unit 900 for detecting the temperature and arc, partial discharge in the distribution panel; And an integrated interface unit 800 that implements the temperature detected by the detector 900 and whether arcing occurs within the same interface with respect to the leakage current. The controller 600 controls the switchboard when the risk is determined based on whether the temperature detected by the detector 900 and the arc generation and the leakage current detected by the integrated interface are interoperated on the same interface. It provides an integrated switchgear, including arc, partial discharge and temperature monitoring.

The control unit 600, the arc protection monitor 10 for continuously monitoring whether the arc occurs in the switchboard; And a control module 600 which detects the leakage current, the temperature value, the partial discharge, and the arc generation received from the arc protection monitor unit 10 and interlocks them to control the switchgear as a whole.

In particular, the control unit 600, as shown in Figure 1, including the control module 630 and the arc protection monitor unit 10 as a whole determine whether a dangerous state of the switchgear system and controls the operation of the system.

When it is determined that the switchboard system is in a dangerous state, the control module 630 notifies the outside of the dangerous state through an alarm or the like, or prevents the switchboard from being damaged by tripping the breaker.

As shown in FIG. 2, the arc protection monitor 10 detects whether the leakage current, the temperature, and the arc are generated by the overcurrent protection unit 20 and the detection unit 900 to determine whether the control module 630 is in a dangerous state. Signal to prevent the system from breaking into arcs.

The detection unit 900, a temperature measuring unit 910 for measuring the temperature inside the switchgear as shown in FIG. And an arc detector 930 for detecting whether an arc is generated.

The temperature measuring unit 910 is installed inside the switchgear circuit to detect the temperature of the circuit in real time, and transmits the measured temperature value to the integrated interface unit 800 and the control unit 600 to overload the circuit to increase the temperature. If possible, the dangerous state of the switchgear system should be recognized.

In addition, the arc detection unit 930, as shown in Figures 1 and 2, the optical sensor 300 for detecting the occurrence of the arc by detecting the light inside the switchboard; And a PD sensor 400 for detecting an arc or a partial discharge.

The arc detector 930 detects the occurrence of the arc by detecting light because an arc or partial discharge occurs inside the circuit. In particular, the optical sensor 300 and the PD sensor 400 are provided at the same time to determine the degree of arc generation in detail and precisely to clearly determine whether the arc is the basic noise or partial discharge within the reference range to determine whether the system is defective. It will increase the sincerity of judging.

The optical sensor 300, as shown in Figure 2 and 3, the light detecting unit 310 for detecting whether the light is generated; A cable 370 for transmitting a signal when light is detected from the light detector 310; And a body portion 330 to which the light detecting portion 310 is coupled to an end portion, and which supports and supports the cable 370 and the light detecting portion 310.

The optical sensor 300, when the arc occurs in the circuit inside the switchgear system to detect the light emission by the arc to detect whether the arc occurs.

As shown in FIG. 3, the light detecting unit 310 has a hemispherical end and a lower end having a cylindrical shape to detect light when light is generated to determine whether an arc is generated. The cylindrical body 330 is supported and connected to the light detecting unit 310, and a cable 370 for transmitting a signal to the controller 600 and the integrated interface unit 800 is integrally connected.

The PD sensor 400, as shown in Figure 4, the arc detecting unit for detecting whether the partial discharge or the arc generation; An insulator 430 that is an insulator that blocks current from flowing outside of the PD sensor when an arc is generated; And a signal output unit 473 formed at an end of the insulator and outputting a partial discharge or arc generation signal.

The arc detecting unit 410 measures the intensity of the arc by precisely measuring the illuminance of light to determine whether the arc generation is basic noise within a standard value allowable range, or whether the arc generation is sufficient to cause a defect in a system such as partial discharge. Do it.

The insulator 430 preferably has a cylindrical shape that is bent as an insulator (insulator) to allow current to be cut off to the outside of the PD sensor when an arc is generated and sensed.

The cable used for the PD sensor 400 is an insulator-type PD sensor that selects and selects a specific cable that can be selectively used according to attenuation rate, that is, cable distance, rather than a general signal cable.

Accordingly, the temperature measurement unit 910 by transmitting the illuminance value of the light measured from the arc detection unit 410 of the PD sensor 400 to the control unit 600 and the integrated interface unit 800 through the signal output unit 473. The temperature value measured at) and the leakage current value measured at the integrated interface unit 800 are simultaneously linked to determine whether the switchboard system is in danger.

According to another exemplary embodiment of the present invention, as shown in FIGS. 1 and 2, the integrated interface unit 800 may include a leakage current detection unit 810 for detecting a leakage current; A current converter 30 for converting current when an overcurrent flows; And an overcurrent protection unit 20 that prevents the circuit from being damaged according to the overcurrent. The integrated switchgear provides an arc, partial discharge, and temperature monitoring integrated switchgear.

The leakage current detector 810 measures a current value leaked from the switchgear circuit, and simultaneously measures the temperature, arc, and partial discharge generated by the detector 900, thereby interlocking the data. To determine whether or not

As shown in FIG. 2, the current converter 30 converts a current when an overcurrent flows in a switchgear system and becomes a dangerous state. As shown in FIG. 2, the overcurrent protection unit 20 protects the current from the current converter 30 from damaging the circuit when the overcurrent flows.

In addition, the integrated interface unit 800 interlocks the leakage current measured by the leakage current detection unit 810 with the temperature, the arc, and the partial discharge measured by the detection unit 900 to interwork with the arc protection monitor unit ( 10) and transmit it to each other to determine whether it is basic noise or partial discharge.

In addition, as shown in FIG. 2, the integrated interface unit 800 may further include a switching switch unit 40 which blocks an overcurrent from the current converter 30 when a leakage current is generated.

In addition, the present invention preferably further comprises a switchgear 50 for operating the switch unit 40.

According to another embodiment of the present invention, the present invention detects the leakage current through the integrated interface unit 800 and at the same time monitor the arc, partial discharge and temperature in the detector 900, the measured leakage current and temperature And by interlocking the arc with each other based on the data measured at the same time, the control unit 600 provides a control method of the switchgear to determine whether the failure by overall monitoring the integrated switchgear.

Thus, by interlocking the data of the leakage current, the real-time temperature and arc of the circuit, whether the partial discharge occurred simultaneously measured in the integrated interface unit 800 and the detection unit 900 to determine whether the risk immediately and precisely, precisely, the system The occurrence of faults can be prevented in advance.

The controller 600 may determine whether the arc generated based on the simultaneously measured leakage current, temperature, and arc data is basic noise or partial discharge.

Accordingly, the present invention can ensure the authenticity of the failure of the switchgear system, determine the risk detection and change in the early stage of the accident in advance to improve the durability of the system, and prevent the occurrence of safety accidents.

In addition, the controller 600 may interlock the data of the simultaneously measured leakage current, temperature, and arc, and generate an alarm indicating that a dangerous state occurs when a calculated value exceeds a reference value.

Preferably, the controller 600 interlocks the simultaneous measured leakage current, temperature, and arc data to trip the circuit breaker when a calculated value exceeds a set value.

Accordingly, the present invention can implement the operation of detecting and interoperating with respect to temperature and overcurrent in the switchgear circuit on the same integrated interface, and whether the risk of the switchgear system using temperature and current sensing is based on the interworking of the data. It works and informs the user.

In particular, the present invention measures the leakage current and the temperature at the same time in the configuration of the optical sensor and the arc sensor (PD sensor) of the detection unit, and implements the logic to determine whether there is a risk by interworking with the integrated interface based on the data of the sensor .

The embodiments described above are easily implemented by those skilled in the art to which the present invention pertains (hereinafter referred to as "the person skilled in the art"), an arc, partial discharge and temperature monitoring integrated switchgear and a switchgear control method using the same. The present invention is not limited to the above-described embodiment and the accompanying drawings, which is not limited to the scope of the present invention. It will be apparent to those skilled in the art that various changes, substitutions, and alterations can be made hereto without departing from the spirit of the present invention, and it is obvious that those parts easily changeable by those skilled in the art are also included in the scope of the present invention.

10: arc protection monitor 20: overcurrent protection unit
30: current transducer 40: switch
50: switch gear 300: light sensor
310: light detector 330: body
370 cable 400 PD sensor
410: arc detection unit 430: insulator (insulator)
470: insulator end 473: signal output unit
600: control unit 800: integrated interface unit
810: leakage current detection unit 900: detection unit
910: temperature measuring unit 930: arc detection unit

Claims (14)

A detector detecting temperature, arc, and partial discharge in the switchboard; And
An integrated interface unit that implements the temperature detected by the detector and whether or not arcing occurs within the same interface with respect to the leakage current;
A control unit that controls the switchboard when the risk is determined based on whether the temperature detected by the detector and whether the arc is generated and the leakage current detected by the integrated interface are mutually interoperable on the same interface. Integrated switchgear with partial discharge and temperature monitoring.
The method of claim 1,
Wherein:
A temperature measuring unit measuring a temperature inside the switchboard; And
An arc, partial discharge and temperature monitoring integrated switchgear comprising a; arc detection unit for detecting the occurrence of the arc.
3. The method of claim 2,
The arc detection unit,
An optical sensor detecting light in the switchboard and detecting whether an arc is generated; And
PD sensor for detecting the arc or partial discharge; arc, partial discharge and temperature monitoring integrated switchgear comprising a.
The method of claim 3, wherein
The optical sensor,
Light detecting unit for detecting whether light is generated;
A cable transferring a signal when light is detected from the light sensing unit; And
And the light sensing unit is coupled to an end of the body unit for supporting and supporting the cable and the light sensing unit.
The method of claim 3, wherein
The PD sensor,
An arc detecting unit detecting whether a partial discharge or an arc is generated;
Insulator which is an insulator which blocks the flow of current to the outside of the PD sensor when the arc is generated; And
And a signal insulator formed at the end of the insulator and outputting a partial discharge or arc generation signal.
The method of claim 3, wherein
The integrated interface unit,
Leakage current detection unit for detecting a leakage current;
A current converter for converting current when an overcurrent flows; And
Arc, partial discharge and temperature monitoring integrated switchgear comprising a; over-current protection unit for preventing the circuit from being damaged according to the over-current.
The method according to claim 6,
The control unit,
An arc protection monitor unit continuously monitoring whether an arc occurs in the switchboard; And
A control module for totally controlling the switchgear by detecting the leakage current, the temperature value, the partial discharge and the arc generation received from the arc protection monitor unit and interworking with each other; arc, partial discharge and temperature monitoring integrated switchgear .
The method of claim 7, wherein
The integrated interface unit,
The leakage current measured by the leakage current detection unit, and the temperature, the arc, and the partial discharge measured by the detection unit interwork with each other and transmits it to the arc protection monitor unit to determine mutual measurement by determining whether it is the basic noise or partial discharge Integrated switchgear with arc, partial discharge and temperature monitoring.
The method of claim 8,
The integrated interface unit,
Switching switch unit for blocking the over-current from the current converter when a leakage current occurs; arc, partial discharge and temperature monitoring integrated switchgear further comprising.
The method of claim 9,
Switchgear for switching the switch portion; arc, partial discharge and temperature monitoring integrated switchgear further comprising.
In the control method of the switchboard,
By detecting leakage current through the integrated interface, the detector monitors arc, partial discharge and temperature.
The control method of the switchgear to determine the failure by monitoring the integrated switchgear in the controller as a whole based on the data measured simultaneously by interlocking the measured leakage current and temperature and the arc.
The method of claim 11,
The control unit,
And determining whether the generated arc is basic noise or partial discharge based on the measured leakage current, temperature, and arc data.
13. The method of claim 12,
The control unit,
The control method of the switchgear, characterized in that to generate an alarm indicating that the dangerous state when the numerical value calculated by interlocking the simultaneous measured leakage current, temperature, arc data.
13. The method of claim 12,
The control unit,
And a circuit breaker trips when a numerical value calculated by interworking the simultaneous measured leakage current, temperature and arc data exceeds a set value.

Images