KR102579941B1 - Incoming panels for power facility protection that can detect and block phase loss remotely using a smart wave power remote controller - Google Patents

Abstract

The present invention uses a smart wave remote controller to remotely detect and block the phase loss position to protect power equipment and devices in advance. The smart wave remote controller is installed by dividing it into a special high-pressure circuit and a low-pressure circuit, and the special high-pressure side is installed. A special high-pressure side sub-smart wave power remote controller (21~23) formed in the circuit and detecting the image loss position at the corresponding location: and a low-pressure side sub-smart wave power remote controller formed in the low-pressure side circuit and detecting the image loss position at the corresponding location. Controller (24~27): Main smart wave remote control that provides overall control and alarms and notifications for the entire configuration, including the sub-smart wave remote controllers (21~27) installed in the extra high-voltage circuit and low-pressure circuit, or performs blocking. It consists of a controller (10), and the sub-smart wave remote controllers (21 to 27) are installed separately into an extra high-pressure circuit and a low-pressure circuit, and the first high-pressure side controller detects the phase loss position at each point of the extra-high pressure side circuit. ~3rd sub-smart wave power remote controller (21~23): and low-pressure side 4th to 7th sub-smart wave power remote controllers (24-27) that detect the phase loss position at each point of the low-pressure side circuit. It is characterized by

Description

Incoming panels for power facility protection that can detect and block phase loss remotely using a smart wave power remote controller}

A smart wave power remote controller does not use the voltage or current used in existing phase loss or reverse phase relays, but rather automatically learns the DB for the built-in phase waveform and power waveform and the received reference phase waveform and power waveform to determine the phase received at the time of phase loss. It is a remote controller that compares and analyzes waveforms and power waveforms to detect phase loss and alerts and notifies managers to take emergency recovery measures or forcibly cut off power circuits.

The present invention relates to a switchgear for protecting electric power facilities using a smart wave remote controller to detect and block phase loss positions. In particular, when a phase loses phase in a three-phase power system, unbalanced current flows or single-phase power is supplied, causing great damage to industrial facilities. Since it generates a phase loss, it has the characteristic of quickly detecting the phase loss state and location of the phase loss and alerting and notifying the manager to take emergency recovery measures or forcibly cut off the power circuit.

Therefore, in order to take these protective measures, in order to detect the phase loss state and position, a basic database of phase waveforms and power waveforms according to the phase loss is stored at each reference location, and the detected phase loss state and phase loss position are compared and analyzed to select the fault point for emergency. This relates to a switchgear for power facility protection using phase loss fault location detection and blocking using a smart wave remote controller that can perform recovery.

When Korea Electric Power Corporation (hereinafter referred to as “KEPCO”) supplies power to industrial facilities or consumers, even if one of the R, S, T, and N phases of the supplied power circuit loses phase, the voltage is diverted through MOF or PT. As a result, it is not easy to determine exactly which phase is missing from the measuring instrument.

Even though the TANK type ASS PF fuse in the water supply room is blown, the open indication is not displayed due to an open defect. Otherwise, it is not only difficult to find a disconnection (phase loss) on the CT inside the MOF or a disconnection (phase loss) in the KEPCO line dividing switch even with the naked eye, but especially in customers, a disconnection on the CT or a disconnection (phase loss) in the KEPCO line dividing switch inside the MOF is possible. Not only is it difficult to find the missing line and it takes a lot of time, but it also takes a lot of time to restore it.

As a specific example, in a customer receiving electricity from KEPCO lines, an overload relay was activated due to a problem with the transformer. After opening the primary and secondary sides of the transformer, inspection for abnormalities, PF fuse blowing inspection, and VCB & CT main busbar were conducted. Line inspection, K and L side fuse inspection of MOF, and LBS connection inspection were performed.

As a result of performing all the above inspections, there were no abnormalities, and the customer requested KEPCO to check whether the circuit breaker and line were broken, but KEPCO said that there was no problem with the transmission breaker, and as a result of the customer's inspection of the KEPCO line, the residential and commercial automatic dividing switch of the KEPCO line was found to be defective. was installed, but this was also in a state that could not be confirmed with the naked eye. In addition, we requested KEPCO to inspect the first and second side testers for the automatic fault identification switch, but we were informed that there were no problems with the cable, so there was no abnormality on the customer side. Since there was no such thing, the secondary side of the KEPCO line automatic dividing switch was separated and a re-inspection was requested.

Upon request for re-inspection, the phase loss on the secondary side of the automatic fault discriminating switch was inspected and it was confirmed that the S phase was disconnected. The automatic fault discriminating switch was replaced and the power supply was restored. In this case, the customer was unable to determine the phase loss condition on the extra-high voltage side. It is a difficult situation, and it takes a lot of time and difficulty to identify the cause, so industrial facilities and consumers face a lot of economic damage and a difficult situation where they have to stop production.

1. Republic of Korea published patent: 10-2013-0001589 (published 2013.01.04) 2. Republic of Korea published patent: 10-2017-0006728 (published 2017.01.18) 3. Republic of Korea Patent Publication: No. 10-1084104 (Public notice 2011.11.16)

In the 22,900V extra-high voltage power receiving facilities of existing power facilities, only high-voltage circuit breakers (VCB), overcurrent relays (OCR), ground fault current relays (OCGR), undervoltage relays (UVR), overvoltage relays (OVR), and protection relays are installed as protection circuits. However, in the case of phase loss relays, not only were they not used in extra-high voltage power receiving facilities, but in the case of existing relays, first, when a phase loss occurs, the undervoltage relay (UVR) must operate immediately in the voltage circuit, but in the 3-phase Y circuit, MOF, TR In the case of existing voltage-type relays, there were many cases of non-operation due to reverse voltage generation through There were many cases of non-operation in the case of existing current-type relays as reverse current flowed in the Y circuit. Third, although reverse phase relays are used for motor protection in the low-voltage motor relay itself, the inconvenience and cost of installing them separately for each load increases. There is a problem.

Therefore, the technical problem to be solved by the present invention is that when a phase loses phase in a three-phase power system, unbalanced current flows or single-phase power is supplied, causing great damage to industrial facilities. Related devices or circuits must be protected by detecting the location, alerting and notifying the administrator, and requesting emergency recovery. In order to take these protective measures, phase waveforms and power waveforms for phase loss by reference location are required to detect phase loss status and phase loss location. This relates to a switchgear for power facility protection using a smart wave remote controller to detect and block phase loss positions so that emergency recovery can be performed by selecting the point of failure by storing the database and comparing and analyzing the detected phase loss state and phase loss location.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

The present invention to achieve the above technical problem relates to a switchgear for protecting power facilities that can easily detect and block the phase loss position remotely using a smart wave remote controller.

In order to protect power equipment and devices in advance by remotely detecting and blocking the location of phase loss using a smart wave remote controller, a smart wave remote controller is installed by dividing it into an extra-high-voltage circuit and a low-pressure circuit, and is formed in the extra-high-voltage circuit. A special high-pressure side sub-smart wave power remote controller (21~23) that detects the phase loss position at the corresponding location: and a low-pressure side sub-smart wave power remote controller (24) formed in the low-pressure side circuit to detect the phase loss position at the corresponding location. ~27): Wow, the main smart wave remote control that performs overall control of the entire configuration, including the sub-smart wave power remote controllers (21~27) installed in the extra high-voltage circuit and low-voltage circuit, alarms and notifications, and power circuit blocking. The controller (10) is characterized in that it consists of:

The main smart wave power remote controller (10) is located at the extra-high voltage customer power receiving point AISS (LBS) and the first sub-smart wave power remote controller (21) on the extra-high pressure side detects the phase loss position of the extra-high voltage side circuit: A communication unit 30 for transmitting and receiving the phase loss signal detected from the side and low pressure side sub smart wave remote controllers 21 to 27: and a signal processing determination unit 40 for analyzing and processing the signal received from the communication unit. If it is determined that the phase is lost through the results analyzed by the signal processing determination unit 40, the control unit 50 alerts and notifies the management control unit 60 of the phase loss state or instructs the power circuit to be cut off through a circuit breaker: and a management and control unit (60) that controls and controls the results notified by the control unit (50) to take action to external related organizations and internal managers to ensure emergency recovery: and the control unit (50) and the management control unit ( It is characterized in that it includes a blocking unit 70 that automatically forcibly cuts off the power circuit through remote control by 60).

The extra-high pressure side sub-smart wave power remote controllers (21 to 23) are located at the extra-high pressure consumer power reception point AISS (LBS) and the first sub-smart wave power remote controller (21) detects phase loss in the circuit: The second sub-smart wave power remote controller (22) located on the secondary side of the MOF point and detecting the phase loss of the circuit: and the third sub-smart wave power remote controller located on the secondary circuit of the VCB secondary circuit of the extra-high voltage customer receiving point and detecting the phase loss of the circuit. A fourth sub-smart wave power remote controller (24) that includes a controller (23), and the low-pressure side sub-smart wave power remote controller (24-27) is located on the secondary side of the transformer, which is the low-pressure customer power receiving point, and detects phase loss. , the 5th sub smart wave remote controller (25), which is located on the secondary side of the ACB, which is the low-voltage customer power receiving point, and detects the phase loss of the circuit; It is characterized by including a 6th sub-smart wave power remote controller (26): and a 7th sub-smart wave power remote controller (27) that is located on the primary and secondary sides of the distribution board MCCB, which is the low-voltage consumer power receiving point, and detects phase loss. .

The sub smart wave power remote controllers (21 to 27) are divided into the 1st to 3rd extra high pressure side sub smart wave power remote controllers (21 to 23) and the 4th to 7th low pressure side sub smart wave power remote controllers (24 to 27). They are divided, and each sub smart wave remote controller (21 to 27) has a phase loss relay (20-1) that detects the phase loss waveform (phase waveform and power waveform) in the power circuit; and converts the detected phase loss waveform into a communication signal. · Signal processing module (20-2) that processes and transmits to the communication module (20-3): receives the converted and processed signal and transmits it to the main smart wave remote controller (10), and communicates with an RS486 module inside Module (20-3): characterized in that it includes.

The control unit 50 sends an image loss signal from the first sub smart wave power remote controller 21 to the main smart wave power remote controller 10 in order to determine the position of the image loss in the sub smart wave power remote controllers 21 to 27. When received, step (1) of determining the location of an phase loss failure in one or more of KEPCO's instantaneous power outage, line breaker, and dividing switch: and the phase loss signal from the second sub smart wave remote controller 22 is received. Step (2) of determining the location of an phase loss failure in one or more of the AISS (LBS), PF, and MOF lines among customer facilities: and the phase loss signal from the third sub smart wave remote controller (23) is received. Step (3) of determining the location of an phase loss failure in one or more of the PT and VCB lines among the customer facilities: and when the phase loss signal from the fourth sub smart wave remote controller 24 is received, CT among the customer facilities, Step (4) of determining the location of a phase loss failure in one or more of the PF (COS), TR, and PT lines: and when the phase loss signal from the fifth sub smart wave remote controller (25) is received, ACB among consumer equipment Step (5) of determining the location of the phase loss failure in the line: When the phase loss signal from the 6th sub smart wave remote controller 26 is received, the MCCB for the low-voltage board FEEDER, line (power cable), and electric motor among the customer facilities Step (6) of determining the location of an open phase failure in one or more of the control panel MAIN MCCB: and when an open phase signal from the 7th sub smart wave remote controller (27) is received, MCCB for low pressure panel FEEDER among customer facilities, line It is characterized in that it includes a step (7) of determining the phase loss fault location in one or more of the distribution panel MAIN MCCB (power cable).

When the management control unit 60 receives the phase loss failure location situation of step (1) from the control unit 50, it is confirmed as the location of the phase loss failure in one or more of instantaneous power failure, line breaker, and separator switch, so external related organizations Requesting emergency recovery step (A): When the second and third phase phase loss fault location situations are received from the control unit 50, among the AISS (LBS), PF, MOF, PT, and VCB lines among the customer facilities. Step (B) of requesting the internal manager to perform emergency self-recovery since it has been confirmed that the location of the phase loss failure is in one or more units: and when the phase loss location situation of steps 4 to 7 is received from the control unit 50, CT, Phase loss in any one or more of PF (COS), TR, PT, ACB, MCCB for low voltage panel feeder, line (power cable), motor control panel MAIN MCCB, MCCB for low voltage panel feeder, line (power cable), distribution board MAIN MCCB Since the location of the fault has been confirmed, it is characterized by including a configuration of step (C): requesting emergency self-recovery from the internal manager.

The control unit 50 notifies the management control unit 60 of the phase loss state and location of the power circuit and requests emergency recovery, but if no action is taken even after a certain period of time due to absence or internal circumstances, the control unit 60 (50) is characterized in that the circuit breaker is automatically and forcibly cut off by remote control.

The sixth sub smart wave power remote controller (26) is a digital waveform smart wave power remote controller for secondary voltage, and includes a self-blocking function and an alarm function in addition to detecting phase waveforms and power waveforms in the first and second motor control panels MCCB among customer facilities. It can be used by linking RS485 to the communication module (20-3), and the 7th sub smart wave remote controller (27) is a digital waveform smart wave remote controller for secondary voltage, which operates in the first and second phases of the distribution board MCCB among customer facilities. In addition to waveform and power waveform detection, it includes a self-blocking function and an alarm function and can be used by linking RS485 to the communication module (20-3).

The control unit 50 or the management control unit 60 is characterized in that it notifies an external related organization or an internal manager using one or more of an emergency phone number, smartphone, email, text message, and KakaoTalk.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

The switchgear for protecting electric power equipment by detecting and blocking the position of phase loss using a smart wave remote controller according to the present invention can identify the cause of electrical equipment and line failures due to phase loss in a short time and enable rapid remote control and fault recovery, thereby preventing long-term operation of the power circuit. It has the effect of minimizing enormous economic damage caused by blocking.

Previously, only overcurrent relays (OCR), ground fault current relays (OCGR), undervoltage relays (UVR), overvoltage relays (OVR), and protection relays were installed and used as protection circuits in extra-high voltage power receiving facilities, so even in the event of a phase loss in the power circuit, The undervoltage relay (UVR) does not operate due to voltage, the overcurrent relay (OCR) and ground fault current relay (OCGR) do not operate due to reverse current, or in the case of low voltage motor relays, a reverse phase relay must be installed individually for each load. Since this occurs, in the present invention, a smart wave remote controller including a communication module (20-3) consisting of an phase loss relay (20-1), a control unit (50), and an RS486 module is used to quickly prevent phase loss in the power circuit. By detecting the location and taking action, there is an effect of minimizing enormous economic damage.

In addition, the present invention identifies the cause of electrical equipment and line failures due to phase loss and instructs a request for prompt recovery of the fault. However, if prompt recovery is not achieved, the power circuit is automatically cut off through a breaker, thereby damaging the electrical equipment and industrial facilities. It has the effect of preventing enormous economic damage in advance.

The effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

Figure 1 is an embodiment of the overall configuration and location of a smart wave remote controller according to the present invention.
Figure 2 is an embodiment of the overall configuration of the main smart wave remote controller according to the present invention.
Figure 3 is an embodiment of the overall configuration of the sub-smart wave remote controller according to the present invention.
Figure 4 is an embodiment of a wiring diagram of the sub-smart wave remote controller according to the present invention.
Figure 5 is an embodiment of the step of determining the location of the phase loss failure when detecting the phase loss location in each smart wave power remote controller according to the present invention.
Figure 6 is an embodiment of the step of requesting emergency recovery from the management control unit according to the present invention.

In order to fully understand the present invention, its operational advantages, and the objectives achieved by practicing the present invention, reference should be made to the accompanying drawings illustrating exemplary embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. The same reference numerals in each drawing indicate the same member.

Figure 1 is an embodiment of the overall configuration and location of a smart wave remote controller according to the present invention.

Referring to Figure 1, the smart wave power remote controller includes sub-smart wave power remote controllers (21 to 23) formed in the extra-high pressure side circuit, sub-smart wave power remote controllers (24 to 27) formed in the low-pressure side circuit, and extra high pressure It includes the main smart wave remote controller (10) formed in the side circuit.

In order to protect power equipment and devices in advance by remotely detecting and blocking the location of phase loss using a smart wave remote controller, install sub-smart wave remote controllers (21 to 27) by dividing them into an extra high-voltage circuit and a low-pressure circuit, Extra-high pressure side sub-smart wave power remote controller (21~23) formed in the extra-high pressure side circuit to detect the location of the phase loss failure at the corresponding location: and low-pressure side formed in the low-pressure side circuit to detect the location of the phase loss failure at the corresponding location. Side sub-smart wave power remote controllers (24-27): General control and phase loss state of the entire system, including the sub-smart wave power remote controllers (21-27) formed in the extra-high voltage side circuit and formed in the extra-high voltage circuit and low-pressure circuit. It is characterized by being composed of a main smart wave remote controller (10) that notifies the phase loss fault location and performs circuit blocking.

In general, when KEPCO supplies power to industrial facilities or consumers, the supplied power circuit is divided into R-phase, S-phase, T-phase, and N-phase (neutral line). Phase 1 or 2 of the 3-phase circuit is used. The state of a broken wire is called a phase loss, and the causes of a phase loss are various, such as a break in phase 1 or 2 of a three-phase circuit, a blown fuse, a malfunction of the circuit breaker on the power supply side, aging of power equipment, and poor contact. When a phase loss occurs, the normal phase connection occurs. / Voltage imbalance below the line voltage occurs and a reverse phase flows into the power circuit, causing overheating of transformers or motors, burnout, power outages, unusability of lighting equipment and industrial equipment, malfunction of magnets, etc., malfunction of precision equipment, and internal circuit burnout. Not only does this occur, but unbalanced current flows in the power circuit or single-phase power is supplied, causing enormous economic damage to industries and homes.

In addition, a phase loss relay is used to detect phase loss in a three-phase power circuit and block the power circuit. Recently used phase loss relays detect phase loss, reverse power, low voltage and overvoltage, low current and overcurrent in addition to phase loss. A multi-purpose phase loss relay that blocks the circuit breaker may also be used.

The sub-smart wave power remote controllers (21 to 23) formed in the extra-high pressure side circuit are divided into first to third sub-smart wave power remote controllers (21 to 23), of which the first sub-smart wave power remote controller (21) is The sub smart wave power remote controllers (24 to 27) formed inside the main smart wave power remote controller (10) and formed in the low pressure side circuit are divided into the 4th to 7th sub smart wave power remote controllers (24 to 27).

In addition, each sub-smart wave power remote controller (21 to 27) will be described in detail in FIG. 3, but each sub-smart wave power remote controller (21 to 27) includes a phase loss relay (20-1) and a signal processing module (20-2). , including the configuration of the communication module (20-3).

In addition, each sub smart wave power remote controller (21 to 27) is a digital wave smart wave power remote controller that detects digital waveforms for the phase waveform and power waveform of the power circuit using the phase loss relay (20-1) formed inside, and is necessary. It is possible to select or use digital signals and analog signals in combination.

Figure 2 is an embodiment of the overall configuration of the main smart wave remote controller according to the present invention.

Referring to Figure 2, the main smart wave power remote controller 10 includes a first sub smart wave remote controller 21, a communication unit 30, a signal processing determination unit 40, a control unit 50, and a management control unit 60. , including the configuration of the blocking unit 70.

The main smart wave power remote controller (10) is located at the extra-high pressure customer power receiving point AISS (or LBS) and the first sub-smart wave power remote controller (21) detects the phase loss position of the extra-high pressure side circuit: and A communication unit 30 that transmits and receives the phase loss signal detected by the low-pressure sub smart wave remote controller 20: and a signal processing determination unit 40 that rechecks and analyzes the phase loss signal received from the communication unit to determine the signal processing. If the result analyzed and processed by the judgment unit 40 is determined to be an open phase, an alarm about the phase loss, the phase loss state, and the location of the phase loss are notified to the management control unit 60, or an instruction is given to cut off the power circuit through a circuit breaker. A control unit (50): and a management control unit (60) that controls and controls the results notified by the control unit (50) to take action to external related organizations or internal managers so that emergency recovery can be achieved: and the control unit (50) And a cutoff unit 70 that automatically forcibly shuts off the power circuit through remote control by the management control unit 60.

The communication unit 30 not only receives the image loss-related communication signal transmitted from the first to seventh sub smart wave remote controllers (21 to 27) and transmits it to the signal processing determination unit 40, but also operates the management control unit in the control unit 50. Even when instructions and notifications are given to (60) and the blocking unit (70), related communication signals are transmitted. The communication unit can be used both wired and wireless, and communication methods include RS485, RS232, CDMA, TCP/IP, Any one or more of UDP and FTP methods can be selected and used. In the present invention, RS485 method is mainly used, but if necessary, some of the above communication methods can be used in parallel.

The signal processing determination unit 40 is configured with a separate memory unit 20-12 internally to enable viewing and storage of DB data stored in each sub smart wave remote controller 21 to 27 and detected image loss data. After checking again the data obtained by comparing and analyzing the reference phase waveform and power waveform DB received from the 1st to 7th sub smart wave remote controllers (21 to 27) and the received phase waveform and power waveform, a final image decision is made. If it is determined that the fault is due to a fault, the phase loss status and phase loss position data are transmitted to the control unit 50.

The control unit 50 transmits data on the phase loss state (phase loss waveform) and phase loss position to the management control unit 60 based on the data received from the signal processing determination unit 40 to take immediate action to achieve emergency recovery. It is characterized by allowing it to be lost.

The control unit 50 notifies the management control unit 60 of the phase loss status (phase loss waveform) and location of the phase loss in the power circuit and requests emergency recovery, but no action is taken even after a certain period of time due to absence or internal circumstances. In this case, the control unit 50 is characterized in that the power circuit is automatically forcibly cut off by remote control of the circuit breaker.

The above schedule time is limited to 3 minutes as the golden time to prevent further damage from the accident by taking action as quickly as possible when an accident occurs.

The management control unit 60 once again checks the results notified by the control unit 50 and notifies external related organizations or internal managers according to the location of the phase loss to take action. However, if the location of the phase loss failure is confirmed on the KEPCO line, An external related agency is notified and an emergency recovery request is made, and if a phase loss failure location is confirmed on a customer facility-related line, an internal manager is notified and an emergency recovery request is made. However, in the case of customer facility-related lines, actions that can be taken through remote control are made through remote control. It self-recovers through, and when on-site personnel are needed, it repeatedly notifies its own emergency recovery request, and in cases where remote control and on-site personnel action are difficult, it is configured to forcibly turn off the breaker of the power circuit from afar.

In addition, if the control unit 50 or the management control unit 60 wants to forcefully cut off the circuit breaker in an emergency, the external related organizations and internal managers are notified 3 minutes before the shutoff time, and the spare power source and emergency generator are turned on. It is characterized by protecting industrial equipment and consumers as much as possible from power circuit interruption by enabling operation.

In addition, the notification from the control unit 50 or the management control unit 60 is made at the same time as the alarm, but it is better to use one or more of the emergency contact phone number of an external related organization or an internal manager, smartphone, email, text message, or KakaoTalk. possible.

In addition, the alarm notified by the control unit 50 to external related organizations or internal managers has the characteristic of sounding an alarm sound through an emergency contact phone and smartphone to notify that a problem has occurred in the power circuit so that immediate action can be taken.

The blocking unit 70 causes the management control unit 60 to automatically forcibly cut off the circuit breaker by remote control, or the control unit 50 notifies the management control unit 60 of measures for phase loss failure. , If no action is taken even after a certain period of time due to absence or internal circumstances, the control unit 50 automatically forcibly cuts off the power circuit by remotely controlling the circuit breaker.

The external related organizations include the KEPCO management manager and the agency safety management manager or field personnel, and the internal managers include the customer management manager and the agency safety management manager or field personnel.

The program for operation and control in the main smart wave remote controller 10 is composed of an app, so that the internal manager can operate and control it on the smartphone by installing the program app so that the internal manager can remotely and in real time use the main smart device. It is possible to monitor or control the operating status of the wave remote controller 10.

Figure 3 is an embodiment of the overall configuration of the sub-smart wave remote controller according to the present invention.

Referring to FIG. 3, the sub-smart wave power remote controller 20 is formed of seven sub-smart wave power remote controllers 21 to 27, and each sub-smart wave power remote controller 21 to 27 is connected to a phase loss relay 20-1. , it includes the configuration of a signal processing module (20-2) and a communication module (20-3).

In the case of the sub-smart wave power remote controller (20), the first to third extra-high pressure side sub-smart wave power remote controllers (21 to 23) and the fourth to seventh low-pressure side sub-smart wave power remote controllers (24 to 27) are powered by A phase loss relay (20-1) that detects the phase loss waveform (phase waveform and power waveform) in the circuit; and a signal processing module (20-1) that converts and processes the detected phase loss waveform into a communication signal and transmits it to the communication module (20-3) 20-2): and a communication module (20-3) that receives the converted and processed signal and transmits it to the main smart wave remote controller (10) and consists of an RS486 module inside.

In the case of a general phase loss relay, it is configured to detect one or more of a number of functions for detecting phase loss, reverse phase, reverse power, low and overvoltage, low current, and overcurrent, but the phase loss relay (20-1) of the present invention is designed to detect phase waveforms and power waveforms according to phase loss, and detection of the phase waveforms and power waveforms has the effect of detecting change values more accurately and in a faster time than detecting change values of voltage and current.

In addition, the phase loss relay (20-1) includes a detection unit (20-11), a memory unit (20-12), and a comparative analysis unit (20-13), and displays the phase waveform and power waveform appearing in the three-phase power circuit in real time. A detection unit (20-11) that detects and transmits to the memory unit (20-12): and the reference phase waveform and power waveform appearing in a general three-phase circuit are stored in a database and the phase waveform received by the detection unit (20-11). and a memory unit (20-12) for storing the power waveform: and a comparative analysis unit ( 20-13): It is characterized by being composed of:

The signal processing module (20-2) converts and processes the waveform detected by the phase loss relay (20-1) into a communication signal and transmits it to the communication module (20-3). Both wired and wireless can be used, and the converted and processed communication signal received from the signal processing module (20-2) is transmitted to the main smart wave remote controller (10), and the communication methods are RS485, RS232, CDMA, and TCP. /IP, UDP, or FTP methods can be selected and used. In the above communication method, communication signal transmission and reception is configured to use both digital signals or analog signals. In the present invention, the RS485 method is mainly used, but if necessary, the above method is used. It is also possible to use some of the communication methods in parallel.

Figure 4 is an embodiment of a wiring diagram of a sub-smart wave remote controller according to the present invention.

Referring to Figure 4, in the case of the sub-smart wave power remote controller, the first to third sub-smart wave power remote controllers (21-23) are formed in the extra-high pressure side circuit, and the fourth to seventh sub-smart wave power remote controllers are formed in the low-pressure side circuit. It includes the configuration of the controllers 24 to 27.

The extra-high voltage side sub-smart wave power remote controllers (21 to 23) are installed inside the main smart wave power remote controller (10), but are located at the extra-high voltage customer power receiving point AISS (or LBS), and are the first sub-smart to detect phase loss in the circuit. Wave power remote controller (21): Located in the MOF secondary circuit of the extra-high voltage customer power receiving point, and detecting phase loss in the circuit. The second sub smart wave power remote controller (22): Located on the secondary side of the extra-high voltage customer power receiving point VCB. It includes a third sub-smart wave power remote controller (23) that detects phase loss in the circuit, and the low-pressure side sub-smart wave power remote controller is located on the secondary side of the transformer, which is the customer power reception point, and a fourth sub-smart wave power remote controller that detects phase loss in the circuit. Remote controller (24): 5th sub smart wave remote controller (25) located on the secondary side of ACB, which is a low-voltage customer power receiving point, to detect phase loss in the circuit: 1st and 1st motor control panel MCCB, which is a low-voltage customer power receiving point. The 6th sub-smart wave power remote controller (26) located on the secondary side and detecting phase loss: and the 7th sub-smart wave power remote controller (27) located on the primary and secondary sides of the distribution board MCCB, which is the low-voltage customer power receiving point, and detecting phase loss ): It is characterized by including:

In relation to detecting the phase loss fault location of the sub-smart wave power remote controller 20, the first sub-smart wave power remote controller 21 is for checking the location of the phase loss fault in KEPCO's circuit breaker and line, and the second The sub-smart wave power remote controller (22) is for checking the location of phase loss failure on the line related to AISS (or LBS), PF, and MOF among customer facilities, and the third sub-smart wave power remote controller (23) is for PT among customer facilities. , It is to check the location of phase loss failure in the line related to VCB, and the fourth sub smart wave remote controller (24) is to check the location of phase loss failure in the line related to CT, PF (COS), and TR among customer facilities. The 5th sub-smart wave power remote controller (25) is for checking the location of phase loss failure in the low-pressure ACB line among customer facilities, and the 6th sub-smart wave power remote controller (26) is an MCCB for low-pressure panel FEEDER among customer facilities. It is used to check the location of phase loss faults in the lines related to the low-pressure side line (power cable) and the motor control panel MCCB. The 7th sub smart wave remote controller (27) is the ), This is to check the location of phase loss failure in the distribution board MCCB-related line.

In addition, the phase loss relay (20-1) of the sub-smart wave power remote controller 20 is a digital waveform smart wave power remote controller, and the first sub-smart wave power remote controller 21 is a digital waveform smart wave power remote controller for extra-high voltage side current. In addition to detecting the phase waveform and power waveform at the receiving point AISS (LBS), it is used for switch ON/OFF and overcurrent trip, and is used in connection with RS485 to the communication module (20-3), and the second sub smart wave remote controller (22) It is a digital waveform smart wave remote controller for special high-voltage side voltage and is used to detect phase waveforms and power waveforms at the power receiving point PT, and is used in connection with RS485 to the communication module (20-3), and the third sub smart wave remote controller (23) is a special high-voltage current digital waveform smart wave remote controller that is used to detect phase waveforms and power waveforms at the receiving point VCB secondary side CT, and is used in connection with RS485 to the communication module (20-3), and is the fourth sub smart wave remote controller. (24) is a low-voltage digital waveform smart wave remote controller that is used to detect phase waveforms and power waveforms at the power receiving point TR secondary side PT, and is used in connection with RS485 to the communication module (20-3), and the 5th sub smart wave power The remote controller (25) is a low-pressure current digital waveform smart wave remote controller that is used to detect phase waveforms and power waveforms in the secondary CT of the low-pressure side ACB in the facility and is used by linking RS485 to the communication module (20-3). The 6th sub smart wave power remote controller (26) is a digital wave smart wave power remote controller for secondary voltage and includes self-blocking and alarm functions in addition to detecting phase waveforms and power waveforms in the 1st and 2nd motor control panel MCCB among customer facilities, and provides communication It is used in connection with RS485 to the module (20-3), and the 7th sub smart wave power remote controller (27) is a digital waveform smart wave power remote controller for secondary voltage. In addition to power waveform detection, it includes a self-blocking function and an alarm function, and is characterized by using RS485 in connection with the communication module (20-3).

In addition, the first sub-smart wave power remote controller (21) is an AISS CT current-type digital waveform smart wave power remote controller that generates actual measurable current and virtual voltage to measure the power between voltage supply and measurement current, and when three-phase power is generated, The waveform is formed normally and reverse power is generated in the event of phase loss. The waveform is measured at the current output point, and if the three-phase waveform is deformed during phase loss, an alarm and signal are sent through RS485 communication when the reverse power and deformed waveform occur. It is configured to transmit and receive.

In addition, the second and fourth sub smart wave power remote controllers (22, 24) are a PT voltage type digital wave smart wave power remote controller that generates a real measurable voltage circuit and a virtual microcurrent, measures the power between the current supply and the measurement voltage, and measures the power between the current supply and the measurement voltage. When phase power occurs, the waveform is formed normally, and when phase loss occurs, reverse power is generated. The waveform is measured at the voltage output point, and when the three-phase waveform is deformed during phase loss, the reverse power and deformed waveform occur. It is configured to transmit and receive alarms and signals through RS485 communication.

In addition, the third and fifth sub smart wave power remote controllers (23, 25) are CT current-type digital waveform smart wave power remote controllers that generate real measurable current and virtual voltage and measure the power between voltage supply and measurement current to determine three-phase power. If this occurs, the waveform is formed normally and in the event of phase loss, reverse power is generated. The waveform is measured at the current output point, and if the three-phase waveform is deformed during phase loss, an alarm and signal are generated if the reverse power and deformed waveform occur. It is configured to transmit and receive through RS485 communication.

In addition, the 6th and 7th sub smart wave power remote controllers (26, 27) are voltage-current type digital waveform smart wave power remote controllers for motor distribution board MCCB and distribution board MCCB, and can actually measure the voltage waveforms on the primary and secondary sides of the voltage circuit. Power is calculated using comparison and measurement current, so that when 3-phase power is generated, a normal waveform is formed, and in case of phase loss, reverse power is generated. By measuring the waveform at the first and second voltage output points, a 3-phase waveform is generated when phase loss occurs. In the case of deformation, it is configured to transmit alarms and signals through RS485 communication when reverse power and deformed waveforms occur.

The deformed waveform refers to a cosine waveform rather than a general normal sine waveform, a waveform in which the size or width of the waveform is distorted, a distorted waveform that is somewhat ahead or lagging compared to the normal sine waveform, or a special waveform such as a triangle wave and a square wave. This means one of the following forms: the waveform is displayed as a dotted line, or the waveform is not displayed.

The digital waveform smart wave power remote controller is mixed and interchanged with three types of digital smart wave power remote controllers: CT current type digital waveform smart wave power remote controller, PT voltage type digital waveform smart wave power remote controller, and voltage current type digital waveform smart wave power remote controller. The arrangement is to ensure that at least one of the three types of digital wave smart wave remote controllers does not operate due to a problem with the power circuit or relay itself, so that at least one can be operated when a problem occurs.

In addition, even if the sub-smart wave power remote controller is partially installed in only one location among the seven sub-smart wave power remote controllers (21 to 27) ranging from extra-high voltage facilities to low-voltage distribution board facilities due to internal circumstances, the main If the functions of the communication unit 30, signal processing and decision unit 40, control unit 50, management control unit 60, and cutoff unit 70 included in the smart wave remote controller operate normally and a phase loss occurs in the power circuit, In this case, it is characterized in that it is configured to alert and notify external related organizations or internal managers to take emergency action and recovery, or to block the power circuit.

Figure 5 is an embodiment of the step of determining the location of the image loss failure when detecting the image loss location of each sub-smart wave power remote controller according to the present invention.

Referring to FIG. 5, the control unit 50 includes a configuration that analyzes and determines the entire image loss position detection signal received from each sub-smart wave power remote controller (21 to 27) to determine the location of the image loss failure.

The control unit 50 sends an image loss signal from the first sub smart wave power remote controller 21 to the main smart wave power remote controller 10 in order to determine the position of the image loss in the sub smart wave power remote controllers 21 to 27. When received, step (1) of determining the phase loss fault location in one or more of KEPCO's instantaneous power outage, line breaker, and dividing switch: and, the phase loss signal from the second sub smart wave remote controller 22 is received. Step (2) of determining the location of an phase loss failure in one or more of the AISS (LBS), PF, and MOF lines among customer facilities: When an phase loss signal is received from the third sub-smart wave remote controller (23), Step (3) of determining the location of an phase loss failure in one or more of the PT and VCB lines among the customer facilities: When the phase loss signal is received from the fourth sub-smart wave power remote controller 24, CT, PF ( Step (4) of determining the location of an phase loss failure in one or more of the COS), TR, and PT lines: When the phase loss signal from the fifth sub smart wave remote controller (25) is received, the ACB line among the customer facilities Step (5) of determining the phase loss failure location: When the phase loss signal from the sixth sub smart wave remote controller 26 is received, one of the MCCB for low-voltage panel FEEDER, line (power cable), and motor control panel MCCB among customer facilities Step (6) of determining the location of an phase loss failure in one or more of the following: When the phase loss signal from the 7th sub smart wave remote controller (27) is received, the MCCB for the low-voltage board FEEDER among the customer facilities, the line (power cable), It is characterized in that it consists of step (7): determining the phase loss fault location in any one or more of the MCCBs of the distribution panel.

In addition, when the phase loss signal is received from the first sub smart wave power remote controller 21, it can be determined as the location of phase loss failure in any one or more of KEPCO's instantaneous power outage, line breaker, and dividing switch, and the second sub smart wave power remote controller 21 When the phase loss signal is received from the controller 22, it can be determined as the location of the phase loss failure in one or more of the LBS, PF, and MOF on the consumer side, and the phase loss signal from the third sub smart wave remote controller 23 is received. When this happens, it is characterized by determining the location of the phase loss failure in one or more of the LBS, PF, MOF, and VCB on the customer side.

Figure 6 is an embodiment of the step of requesting emergency recovery from the management and control unit 60 according to the present invention.

Referring to FIG. 6, the management control unit 60 analyzes and determines the entire image loss position detection signal received from each sub smart wave remote controller (21 to 27) in the control unit 50 to determine the location of the image loss failure. Includes.

When the management control unit 60 receives the phase loss failure location situation in step (1) of determining the phase loss failure location from the control unit 50, it determines that the phase loss failure location is in one or more of an instantaneous power outage, a line breaker, and a dividing switch. Step (1) of identifying the phase loss and requesting emergency recovery to an external related organization: and when the phase loss failure location situation of steps (2) to (3) of determining the phase loss failure location is received from the control unit 50, the AISS in the consumer equipment is Step (2) of requesting an internal manager to perform emergency self-recovery by identifying an open phase failure location in one or more of the (LBS), PF, MOF, PT, and VCB lines: and determining the location of an open phase failure from the control unit 50. When the phase loss fault location situation from steps (4) to (7) is received, CT, PF (COS), TR, PT, ACB, MCCB for low voltage panel FEEDER, line (power cable), MCCB for motor control panel, low voltage among customer facilities are received. It is characterized by including the configuration of step (3): identifying the phase loss fault location in one or more of the semi-feeder MCCB, line (power cable), and distribution board MCCB and requesting emergency self-recovery from the internal manager.

In addition, when a phase loss signal is received from the first sub smart wave remote controller (21), it is judged to be the location of phase loss failure in one or more of KEPCO's instantaneous power outage, line breaker, and dividing switch, and a request is made to an external related organization for emergency recovery. And, when a phase loss signal is received from the second sub smart wave remote controller 22, it is judged to be the location of an phase loss failure in one or more of the LBS, PF, and MOF on the consumer side, and the internal manager is requested to perform emergency self-recovery. 3 When a phase loss signal is received from the sub smart wave remote controller (23), the location of the phase loss failure is determined in one or more of the customer's LBS, PF, MOF, and VCB, and the internal manager is requested to perform emergency self-recovery. do.

In the above, the technical idea of the present invention has been described along with the accompanying drawings, but this is an exemplary description of a preferred embodiment of the present invention and does not limit the present invention. In addition, it is clear that anyone skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

AISS: Automatic fault identification switch (for indoor use) ASS: Automatic fault identification switch (for outdoor use)
ACB: Low voltage circuit breaker LBS: Load switch
PF: Power fuse VCB: High voltage circuit breaker
MOF: Instrument transformer PT: Instrument transformer
CT: Instrument current transformer MCCB: Molded case circuit breaker
TR: Transformer FEEDER: Feeder
COS: Cutout switch OCR: Overcurrent relay
OCGR: Ground fault current relay UVR: Low voltage relay
OVR: Overvoltage relay 110: Multiple phase loss position controller
10: Main smart wave remote controller 20: Sub smart wave remote controller
21~27: 1st smart wave remote controller ~ 7th sub smart wave remote controller
20-1: Phase loss relay (20-1) 20-2: Signal processing module (20-2)
20-3: Communication module (20-3) 20-11: Detection unit (20-11)
20-12: Memory unit (20-12) 20-13: Comparison analysis unit (20-13)
30: Communication unit (30) 40: Signal processing determination unit (40)
50: Control unit (50) 60: Management control unit (60)
70: Blocking unit (70)

Claims (9)

In order to protect power facilities and devices in advance by remotely detecting and blocking the location of frost loss using a smart wave remote controller, a smart wave remote controller is installed by dividing it into an extra high-voltage circuit and a low-pressure circuit.
A special high-voltage side sub-smart wave power remote controller (21~23) that is formed in the special high-voltage side circuit and detects the phase loss position at the corresponding location:
Low-pressure side sub-smart wave power remote controller (24~27) formed in the low-pressure side circuit to detect the phase loss position at the corresponding location:
It consists of a main smart wave power remote controller (10) that provides overall control and alarms and notifications for the entire configuration, including the sub smart wave remote controllers (21 to 27) installed in the extra high-pressure circuit and the low-pressure circuit, or performs blocking,
The main smart wave power remote controller (10) is located at the extra-high pressure customer power receiving point AISS (LBS) and the first sub-smart wave power remote controller (21) on the extra-high pressure side detects the phase loss position of the extra-high pressure side circuit:
A communication unit (30) that transmits and receives the phase loss signal detected by the special high-pressure side and low-pressure side sub-smart wave remote controllers (21 to 27): and,
A signal processing determination unit 40 that analyzes and processes the signal received from the communication unit: and
If it is determined that the phase is lost through the results analyzed by the signal processing determination unit (40), the control unit (50) alerts and notifies the management control unit (60) of the phase loss state or instructs the management control unit (60) to cut off the power circuit through a circuit breaker. :and
A management and control unit (60) that controls and controls the results notified by the control unit (50) to take action to external related organizations and internal managers so that emergency recovery can be achieved:
It includes a blocking unit 70 that automatically forcibly cuts off the power circuit through remote control by the control unit 50 and the management control unit 60,
The control unit 50 notifies the management control unit 60 of the phase loss state and location of the power circuit and requests emergency recovery, but if no action is taken even after a certain period of time due to absence or internal circumstances, the control unit 60 In (50), the breaker is configured to automatically forcibly cut off the power circuit by remote control. However, if the breaker is to be forcibly cut off urgently, external related organizations and the internal manager are notified 3 minutes before the cutoff time. It is designed to protect industrial equipment and consumers as much as possible from power circuit interruption by enabling the operation of reserve power and emergency generators.
The sub-smart wave power remote controller (26, 27) is a voltage-current type digital waveform smart wave power remote controller for the motor switchboard MCCB and distribution board MCCB. It can actually measure the voltage waveforms of the primary and secondary sides of the voltage circuit and measure power with current. is calculated to ensure that the waveform is formed normally when three-phase power is generated, and that reverse power is generated in the event of phase loss. By measuring the waveform at the first and second voltage output points, the reverse power is generated when the three-phase waveform is deformed during phase loss. A switchgear for power facility protection that can easily detect and block phase loss from a distance using a smart wave remote controller that transmits an alarm and signal via RS485 communication when an over-strained waveform occurs.
delete According to paragraph 1,
The special high pressure side sub-smart wave remote controller (21-23),
The first sub-smart wave power remote controller (21) located at the extra-high voltage consumer power receiving point AISS (LBS) and detecting phase loss in the circuit:
The second sub-smart wave remote controller (22) located in the MOF secondary circuit of the extra-high voltage customer receiving point and detecting phase loss in the circuit:
It includes a third sub-smart wave power remote controller (23) located on the secondary side of the extra-high voltage consumer power receiving point VCB, which detects phase loss in the circuit,
The low-pressure side sub-smart wave power remote controllers (24 to 27) are located on the secondary side of the transformer, which is the low-pressure customer power reception point, and a fourth sub-smart wave power remote controller (24) that detects phase loss:
The fifth sub smart wave remote controller (25), which is located on the secondary side of the ACB, which is the low-voltage consumer power receiving point, and detects phase loss in the circuit:
The 6th sub smart wave remote controller (26), which is located on the primary and secondary sides of the motor control panel MCCB, which is the low-voltage consumer power receiving point, and detects phase loss:
A 7th sub smart wave remote controller (27) located on the primary and secondary sides of the distribution board MCCB, which is a low-voltage consumer power receiving point, to detect phase loss. Detection of phase loss position remotely using a smart wave power remote controller, characterized in that it includes a A switchboard for protecting power facilities that is easy to shut off.
According to paragraph 1,
The sub-smart wave remote controller (21-27) is,
It is divided into the 1st to 3rd extra high pressure side sub smart wave power remote controllers (21 to 23) and the 4th to 7th low pressure side sub smart wave power remote controllers (24 to 27), and each sub smart wave power remote controller (21 to 27) 27) is a phase loss relay (20-1) that detects phase loss waveforms (phase waveform and power waveform) in the power circuit;
A signal processing module (20-2) that converts and processes the detected phase loss waveform into a communication signal and transmits it to the communication module (20-3):
Receives the converted and processed signal and transmits it to the main smart wave power remote controller (10), and remotely establishes an image using a smart wave power remote controller, which is characterized in that it includes a communication module (20-3) consisting of an RS486 module inside. A switchgear for protecting power facilities that is easy to detect and block.
According to paragraph 1,
The control unit 50,
To determine the location of phase loss in the sub-smart wave remote controller (21~27)
When the main smart wave power remote controller (10) receives a phase loss signal from the first sub smart wave power remote controller (21), it is determined to be the location of an phase loss fault in one or more of KEPCO's instantaneous power outage, line breaker, and dividing switch. Step (1):
When the phase loss signal from the second sub smart wave remote controller 22 is received, step (2) of determining the location of the phase loss failure in one or more of the AISS (LBS), PF, and MOF lines among the customer facilities:
When the phase loss signal from the third sub smart wave remote controller 23 is received, step (3) of determining the location of the phase loss failure in one or more of the PT and VCB lines among customer facilities:
Step (4) of determining the location of an phase loss failure in one or more of the CT, PF (COS), TR, and PT lines among customer facilities when an phase loss signal is received from the fourth sub smart wave remote controller (24): and
When the phase loss signal from the fifth sub smart wave remote controller 25 is received, step (5) of determining the location of the phase loss failure in the ACB line among customer facilities:
When a phase loss signal is received from the 6th sub smart wave remote controller 26, the location of phase loss failure is determined in one or more of the MCCB for the low-voltage panel FEEDER, the line (power cable), and the main MCCB of the motor control panel among the customer facilities. Step (6): and
When the phase loss signal from the 7th sub smart wave remote controller (27) is received, determining the location of the phase loss failure in one or more of the MCCB for the low-voltage board FEEDER, the line (power cable), and the main MCCB of the distribution panel among the customer facilities. (7): A switchgear for protecting power facilities that can easily detect and block the phase loss position remotely using a smart wave remote controller, which includes:
According to paragraph 1,
The management control unit 60,
When the phase loss failure location situation of step (1) is received from the control unit 50, it is confirmed that the phase loss failure location is in one or more of the instantaneous power outage, line breaker, and dividing switch, so requesting emergency recovery from an external related organization. (A): Wow
When the phase loss fault location situation of the second and third stages is received from the control unit 50, it is confirmed as the phase loss fault location in one or more of the AISS (LBS), PF, MOF, PT, and VCB lines among the customer facilities, so the internal manager Step (B) to request emergency self-recovery: and
When phase 4 to 7 phase loss fault location status is received from the control unit 50, CT, PF (COS), TR, PT, ACB, low-voltage panel FEEDER MCCB, line (power cable), and motor control panel MAIN MCCB among customer facilities are received. , A smart device characterized by including a step (C) of requesting emergency self-recovery to the internal manager since it has been confirmed as a phase loss fault location in any one or more of the low-voltage panel FEEDER MCCB, line (power cable), and distribution board MAIN MCCB. A switchgear for protecting power facilities that can easily detect and block phase loss from a distance using a wave remote controller.
delete According to paragraph 3,
The sixth sub smart wave remote controller 26,
Digital waveform smart wave remote controller for secondary voltage includes self-blocking function and alarm function in addition to detecting phase waveform and power waveform in MCCB 1st and 2nd motor control panel among consumer equipment, and connects RS485 to communication module (20-3) available,
The 7th sub smart wave remote controller (27),
Digital waveform smart wave remote controller for secondary voltage includes self-blocking function and alarm function in addition to detecting phase waveform and power waveform in distribution board MCCB 1st and 2nd among consumer facilities, and is used by linking RS485 to communication module (20-3) A switchgear for power facility protection that can easily detect and block the phase loss position remotely using a smart wave remote controller.
According to paragraph 1,
The control unit 50 or the management control unit 60
It is easy to detect and block the phase loss position remotely using a smart wave remote controller, which is characterized by notifying external related organizations or internal managers using any one or more of emergency contact phone, smartphone, email, text message, and KakaoTalk. A switchgear for protecting power facilities.