KR20180049982A - Integrated analysis system for operation characteristic of switch, data acquisition apparatus for switch and method for analyzing operation characteristic of switch - Google Patents

Abstract

The open / close device operation characteristic integration analysis system according to an embodiment of the present invention includes: a plurality of open / close device operation characteristics integrated analysis systems, each of which is electrically connected to a part of a plurality of open / close devices, A plurality of field collectors for measuring current information including a magnitude and a rate of change of at least one of a current (C / C) current and a contact state information; Receives the corresponding contact signal and the current signal, analyzes the time of the change of the contact state included in the contact state information, generates the mechanical operation characteristic information of each of the plurality of opening / closing devices, analyzes the current information, A signal processing unit for generating operation characteristic information; . ≪ / RTI >

Description

TECHNICAL FIELD [0001] The present invention relates to an integrated analysis system, a data collecting apparatus, and an operating method for analyzing operation characteristics of an opening /

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a system and method for integrating operating characteristics of an opening and closing apparatus,

The switching device electrically connected to the line can control the passage and blocking of the electric energy through the closing operation and the opening operation, and can include at least one of the circuit breaker and the disconnecting device.

Since the state of the switchgear can be weakened by long-term use of the electric power facility, it is possible to quickly and accurately detect the early failure symptoms of the switchgear and to quickly isolate the faulty switchgear from the power system. This is important in terms of cost reduction.

Recently, power systems have become complicated due to a surge in power demand and expansion of distributed power sources, and the number of switching devices that control such power systems is increasing.

Japanese Patent Application Laid-Open No. 10-2014-0139268

An embodiment of the present invention is an open / close device operation characteristic integrated analysis system capable of promptly and accurately detecting early failure symptoms of an open / close device and flexibly coping with enlarged construction of the open / close device, And provides an integrated analysis method of operational characteristics.

According to an aspect of the present invention, there is provided an integrated analysis system for operating characteristics of an opening and closing device, the system comprising: a plurality of switching devices, each of which is electrically connected to a part of a plurality of switching devices, A plurality of field collectors for measuring current information including a magnitude and a rate of change of at least one of (C / C) currents and measuring contact state information; And a controller for receiving a contact signal and a current signal respectively corresponding to the contact state information and the current information measured from the plurality of field collectors and analyzing the time of change of the contact state included in the contact state information, A signal processing unit for generating respective mechanical operation characteristic information and analyzing the current information to generate electrical operation characteristic information of each of the plurality of switching devices; . ≪ / RTI >

The apparatus for collecting data of an open / close device according to an embodiment of the present invention includes at least one load current of a plurality of open / close devices, a trip coil (T / C) an input for measuring a magnitude and a rate of change of at least one of a current and a closed coil (C / C) current and measuring a contact state; A communication unit for generating a contact signal corresponding to at least one contact state information of the plurality of open / close devices and generating a current signal corresponding to at least one current information among the plurality of open / close devices; A cable terminal for transmitting a current signal and a contact signal generated by the communication unit with a cable and receiving power from the cable; . ≪ / RTI >

(T / C) current and a closed coil (C / C) current of at least one of a plurality of open / close devices electrically connected to the line, Receiving a current signal corresponding to at least one of a magnitude and a rate of change and receiving a contact signal corresponding to the contact state; Analyzing a time of the change of the contact state to generate at least one mechanical operation characteristic information of the plurality of opening and closing devices; Analyzing the current to generate at least one electrical operating characteristic information of the plurality of switching devices; And applying a value corresponding to the mechanical operation characteristic information and a value corresponding to the electrical operation characteristic information to an alarm condition expression and generating alarm information corresponding to the alarm value of the alarm condition expression; . ≪ / RTI >

The system for analyzing the operating characteristics of the opening / closing device according to an embodiment of the present invention can quickly and accurately detect the early failure symptoms of the opening / closing device and flexibly cope with enlargement and construction of the opening and closing device.

Also, the system for analyzing the operating characteristics of the opening / closing device according to an embodiment of the present invention can be utilized when the opening / closing device is in the active state, the oblique state, and the checking state, Human errors can be prevented.

FIG. 1 is a diagram illustrating a system for analyzing the operating characteristics of an opening / closing device according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a system for analyzing the operating characteristics of an opening / closing device according to an embodiment of the present invention.
3 is a graph illustrating a current signal and a contact signal.
FIG. 4 is a flowchart illustrating a method for analyzing integrated operating characteristics of an opening / closing device according to an embodiment of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order that those skilled in the art can easily carry out the present invention.

FIG. 1 is a diagram illustrating a system for analyzing the operating characteristics of an opening / closing device according to an embodiment of the present invention.

1, an opening / closing device operation characteristic integration analysis system according to an embodiment of the present invention includes a plurality of field collection units 110a, 110b, 110c, and 110d and a signal processing unit 120, 130b and 130c and 130d and can analyze the operating characteristics of a plurality of switching devices 10a, 10b, 10c and 10d electrically connected to the line 20. [

The plurality of field collecting units 110a, 110b, 110c and 110d are electrically connected to a part of the plurality of opening and closing apparatuses 10a, 10b, 10c and 10d, respectively, It is possible to measure the change of the contact state and the electric current of some of them. Here, the current means the magnitude and rate of change of at least one of a load current, a trip coil (T / C) current, and a closed coil (C / C) current.

For example, the plurality of field collectors 110a, 110b, 110c, and 110d may be connected directly to each other to measure the contact state, or may be connected in a live state by an open transformer core method for current measurement. 10b, 10c, and 10d by a plurality of switching devices 10a, 10b, 10c, and 10d.

For example, each of the plurality of field collectors 110a, 110b, 110c, and 110d may sample currents of a plurality of the switching devices 10a, 10b, 10c, and 10d at predetermined intervals, The contact signal and the current signal corresponding to the current values can be generated and the generated plurality of contact signals and current signal can be transmitted to the signal processing unit 120 through the plurality of cables 130a, 130b, 130c, and 130d .

The signal processing unit 120 can receive the contact signal and the current signal corresponding to the change in the contact state and the current measured from the plurality of field collectors 110a, 110b, 110c, and 110d.

Thereafter, the signal processing unit 120 analyzes the time of the change of the contact state to generate mechanical operation characteristic information of each of the plurality of switching devices, analyzes the waveform of the current, The characteristic information can be generated.

Here, the mechanical operating characteristics may include operating characteristics depending on the pneumatic, hydraulic, or electromagnetic force of the switching device, and the electrical operating characteristics may include operating characteristics of the coil of the switching device.

For example, the signal processing unit 120 may compare the time of the change in the measured contact state with the reference time and select the mechanical operation characteristic information according to the comparison result as one of mechanical operation normal or mechanical operation failure, It is possible to compare the magnitude of the current and the reference magnitude and to select one of the electrical operation normal operation or the electrical operation malfunction based on the comparison result. Then, the signal processing unit 120 may determine that the switching device selected at least one of the mechanical malfunction and the electrical malfunction is a defective switching device.

The signal processing unit 120 can integrally generate a plurality of operation characteristic information due to different principles and thus can accurately diagnose an early failure of the plurality of switching devices 10a, 10b, 10c, and 10d .

Also, the signal processing unit 120 can sequentially analyze the operation states of the plurality of opening / closing apparatuses 10a, 10b, 10c, and 10d. If the plurality of switching devices 10a, 10b, 10c, and 10d operate simultaneously, the signal processing unit 120 may store some information in a temporary storage configuration such as a buffer, and may sequentially read the information stored in the buffer. . Since the signal processing unit 120 can perform a comprehensive analysis on a plurality of the opening / closing devices 10a, 10b, 10c, and 10d in real time, the signal processing unit 120 can perform early analysis of the plurality of opening / closing devices 10a, 10b, 10c, And it is possible to flexibly cope with the expansion of the opening / closing device and the field collecting part.

The plurality of cables 130a, 130b, 130c, and 130d may electrically connect one of the plurality of field collectors 110a, 110b, 110c, and 110d and the signal processor 120, respectively. For example, the plurality of cables 130a, 130b, 130c, and 130d may be configured to be in a state of an A phase current, a B phase current, a C phase current, a T / C current, a C / C current, May include a single lead through which the information corresponding to the plurality of leads is integrated.

Each of the plurality of cables 130a, 130b, 130c, and 130d may transmit a current signal and a contact signal to the signal processing unit 120 from one of the plurality of field collecting units 110a, 110b, 110c, and 110d, The signal processing unit 120 can transmit power to one of the plurality of field collectors 110a, 110b, 110c, and 110d.

For example, each of the plurality of cables 130a, 130b, 130c, and 130d may be configured to allow various signals and power to pass therethrough according to a transmission scheme that loads power and communication signals. For example, over Ethernet) transmission method. That is, the number of each of the plurality of cables 130a, 130b, 130c, and 130d may be one.

Accordingly, the plurality of cables 130a, 130b, 130c, and 130d may have an uncomplicated structure despite the connection of the plurality of field collectors 110a, 110b, 110c, and 110d to the signal processing unit 120 , Human errors such as crosstalk occurring during maintenance or expansion of the user can be prevented.

FIG. 2 is a block diagram illustrating a system for analyzing the operating characteristics of an opening / closing device according to an embodiment of the present invention.

2, the site collecting unit 110 may include an input unit 111, a communication unit 112, a buffer 113, a transmission port 114, and a power source unit 115.

The input unit 111 may be electrically connected to a plurality of switching devices 10 electrically connected to the line to measure a change in the contact state of the plurality of switching devices 10 and a current. For example, the input unit 111 may receive or detect the state information of the a-contact and the state information of the b-contact. The A-phase current, the B-phase current, the C-phase current, the trip coil Closed coil (C / C) current can be input or detected.

Here, the A-phase current, the B-phase current and the C-phase current correspond to the load current in the present specification, and the trip coil (T / C) current means the current when the coil is excited to open the opening / The coil (C / C) current means the current when the coil is excited to put the switching device.

Also, the input unit 111 may receive live line information of a plurality of the open / close devices 10. Thereafter, the input unit 111 may stop measuring at least one of the change in the contact state and the current according to the presence of the live wire. Accordingly, the input unit 111 can safely perform a measurement operation on the plurality of open / close devices 10.

For example, the input unit 111 measures the current of each of the plurality of switching devices 10 when the plurality of switching devices 10 are in a live line state, and when a plurality of the switching devices 10 are not in a live line state, It is possible to measure a change in the contact state and a current of each of the switching devices 10 of the first embodiment.

The communication unit 112 can generate a contact signal corresponding to a change in the contact state of the plurality of the switching devices 10 and generate a current signal corresponding to the current of the plurality of switching devices 10. For example, the communication unit 112 may generate a carrier wave and modulate the carrier wave according to the change of the contact state and the current to generate the contact signal and the current signal.

The buffer 113 may temporarily store change information of the contact state and current information. For example, when the input unit 111 simultaneously measures the change information of the contact state and the current information, the buffer 113 generates the contact state change information to the signal processing unit 120 while the communication unit 112 generates and transmits the contact state change information to the signal processing unit 120 The current information can be temporarily stored.

The transmission port 114 can transmit the current signal and the contact signal generated by the communication unit 112. For example, the transmission port 114 may be implemented as a cable terminal having a cable connection type, may be implemented as an antenna supporting long distance communication, or may be implemented as a coil supporting short distance communication have.

Also, the transmission port 114 may receive power from the signal processing unit 120. Accordingly, the power of the field collecting unit 110 can be managed integrally.

The power supply unit 115 may store or convert the power supplied from the signal processing unit 120. For example, the power supply unit 115 may include at least one of a battery, a converter, and a switch.

Meanwhile, in the opening / closing device operation characteristic integration analysis system according to an embodiment of the present invention, a value corresponding to the mechanical operation characteristic information generated by the signal processing unit 120 and a value corresponding to the electrical operation characteristic information are set in an alarm condition expression And an alarm output unit 145 for generating alarm information corresponding to the alarm value of the alarm condition expression and outputting an alarm corresponding to the alarm information.

For example, the alarm condition equation may be set to the following equation (1). Here, t2 is the change point of the b contact, t1 is the change point of the a contact, I is the average current of the A phase current, B phase current, and C phase current, and x and y are constants. Also, t1 and t2 are values corresponding to the mechanical operation characteristic information, and I may be a value corresponding to the electrical operation characteristic information.

Meanwhile, the alarm output unit 145 may include a display device for outputting a visual alarm or a speaker for outputting an audible alarm. For example, the alarm output unit 145 may determine which of the plurality of pieces of alarm information corresponding to the different alarm value ranges corresponds to the calculated alarm value. If the calculated alarm value corresponds to the alarm information to which the calculated alarm value belongs The alarm can be output at the start or audibly.

Accordingly, the user can quickly disconnect the switching device, which is determined to be defective, from the power system, and can contribute to stable supply of electric power and reduction in the cost of managing electric power facilities.

3 is a graph illustrating a current signal and a contact signal.

Referring to FIG. 3, the open / close device operation characteristic integration analysis system according to an embodiment of the present invention can analyze at least two of the maximum value, the integrated value, the change rate, and the shape of the current by analyzing the waveform of the measured current. , And the change point of the voltage or current of the contact point can be analyzed together.

For example, the open / close device operation characteristic integration analysis system compares each of the calculated maximum value, integrated value, change rate, and type with a predetermined maximum value, integrated value, change rate, and type, It is possible to generate the electric operation characteristic information corresponding to the relative size.

FIG. 4 is a flowchart illustrating a method for analyzing integrated operating characteristics of an opening / closing device according to an embodiment of the present invention.

Referring to FIG. 4, the site collecting unit includes an initializing and waiting step S110, an opening / closing device operation checking step S120, a coil current measuring step S131, a load current measuring step S132, S133), a measurement value temporary storage step S145, a data transmission step S150, and a transmission success checking step S160.

Referring to FIG. 4, the signal processing unit includes an initialization step S210, a normal reception confirmation step S220, a retransmission request step S225, a current analysis step S231, an operation time analysis step S232, (S240), a user alarm step (S245), and a diagnosis result output step (S250).

That is, the method for integrating operating characteristics of the opening / closing device according to an embodiment of the present invention includes: comparing a contact signal corresponding to at least one contact state change and current among a plurality of open / close devices electrically connected to a line, And analyzing the time of the change in the contact state, which is a step corresponding to S231, to generate at least one mechanical operation property information of the plurality of opening / closing devices And analyzing the waveform of the current corresponding to step S232 to generate at least one electrical operation characteristic information of the plurality of opening and closing devices. The step of S240, S245, The characteristic information and the electrical operation characteristic information are applied to an alarm condition expression and alert information corresponding to the alarm value of the alarm condition expression is generated And a step of generating a signal.

Accordingly, the early failure of the opening / closing device can be detected quickly and accurately, and the opening / closing device can be flexibly coped with enlarged construction.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Anyone can make various variations.

10a, 10b, 10c, and 10d:
20: Track
110a, 110b, 110c, 110d:
111:
112:
113: buffer
114: transmission port
120: Signal processor
130a, 130b, 130c, 130d:
145: Alarm output unit

Claims (9)

(T / C) current and a closed coil (C / C) current of a part of the plurality of open / close apparatuses, and a change rate of at least one of the load current, the trip coil A plurality of field collectors for measuring current information and measuring contact state information; And
Receiving a contact signal and a current signal respectively corresponding to the contact state information and the current information measured from the plurality of field collectors and analyzing the time of change of the contact state included in the contact state information, A signal processing unit for generating mechanical operation characteristic information of the plurality of switching devices by analyzing the current information and generating electrical operation characteristic information of each of the plurality of switching devices; Wherein said system comprises:
The method according to claim 1,
Wherein the plurality of field collectors receives information on live line presence or absence of the plurality of open / close devices, measures current information of each of the plurality of open / close devices when the plurality of open / close devices are in a live state, Wherein the contact state information and the current information of each of the plurality of open / close devices are measured when the device is not in a live state.
2. The system of claim 1, wherein each of the plurality of field collectors comprises:
A communication unit for generating a contact signal corresponding to contact state information of a part of the plurality of open / close devices and generating a current signal corresponding to a part of the current information of the plurality of open / close devices; And
A transmission port for transmitting a current signal and a contact signal generated by the communication unit by wire or wireless; Wherein said system comprises:
The method according to claim 1,
Further comprising a plurality of cables each electrically connecting between one of the plurality of field collectors and the signal processing unit and including one lead through which the current signal, the contact signal, and the power source pass together,
And the signal processing unit supplies the power to each of the plurality of field collecting units via the plurality of cables.
5. The system of claim 4, wherein each of the plurality of field collectors comprises:
And a buffer for temporarily storing measured contact state information and current information,
And sequentially generates signals one by one for a plurality of pieces of information stored in the buffer and transmits the generated signals to the plurality of cables.
The method according to claim 1,
Wherein the signal processing unit analyzes at least two of a maximum value, an integrated value, a change rate, and a shape of a current included in the current signal, and analyzes the at least two of the open / Device motion characteristics integrated analysis system.
The method according to claim 1,
An alarm for applying a value corresponding to the mechanical operation characteristic information and a value corresponding to the electrical operation characteristic information to an alarm condition expression, generating alarm information corresponding to the alarm value of the alarm condition expression, and outputting an alarm corresponding to the alarm information And an output unit.
At least one of a load current, a trip coil (T / C) current and a close coil (C / C) current of at least one of the plurality of open / close devices is electrically connected to at least one of a plurality of open / close devices electrically connected to the line An input unit for measuring a size and a change rate and measuring a contact state;
A communication unit for generating a contact signal corresponding to at least one contact state information of the plurality of open / close devices and generating a current signal corresponding to at least one current information among the plurality of open / close devices; And
A cable terminal for transmitting a current signal and a contact signal generated by the communication unit with a cable and receiving power from the cable; And an opening / closing device.
A current signal corresponding to at least one of a load current, a trip coil (T / C) current and a closed coil (C / C) current of at least one of a plurality of switching devices electrically connected to the line, Receiving a contact signal corresponding to the contact point;
Analyzing a time of the change of the contact state to generate at least one mechanical operation characteristic information of the plurality of opening and closing devices;
Analyzing the current to generate at least one electrical operating characteristic information of the plurality of switching devices; And
Applying a value corresponding to the mechanical operation characteristic information and a value corresponding to the electrical operation characteristic information to an alarm condition expression and generating alarm information corresponding to the alarm value of the alarm condition expression; Wherein the method comprises the steps of:

Images