KR20110137048A - Device for detecting power failure caused by customer property, system for managing power failure caused by customer property and method thereof - Google Patents

Abstract

PURPOSE: A spreading blackout management apparatus, and a spreading blackout management system and method using the same are provided to accurately determine the electrical failure of power receiving equipment by considering a current and voltage at the same time. CONSTITUTION: A spreading blackout management apparatus comprises a current sensing part(110), a voltage sensing part(120), and a break determining part(130). The spreading blackout management apparatus measures the power receiving equipment of an electricity user and a current and voltage of the border of a power supplier. The current sensing part senses a current which exceeds a supervisory tone in a transformer(500) which supplies power to the power receiving equipment of the electricity user. The current sensing part senses the current of a cut out switch which is installed at the primary side of the transformer.

Description

DEVICE FOR DETECTING POWER FAILURE CAUSED BY CUSTOMER PROPERTY, SYSTEM FOR MANAGING POWER FAILURE CAUSED BY CUSTOMER PROPERTY AND METHOD THEREOF}

The present invention is a technique for preventing a power outage that may be caused by the failure of the customer's power receiving facility. More specifically, it is possible to clearly identify the failure of the customer's power receiving equipment, to prevent the power failure in advance by facilitating the power failure by the electrical failure of the power receiving equipment, and to easily manage the power demand. It relates to a technology for improving the convenience of management.

The general criteria for power outages are categorized as instantaneous outages that last for less than one minute after the operation of the substation breakers, instantaneous outages for one to five minutes, and transient outages for more than five minutes. For power providers, the reduction in the number of occurrences and outage times for power outages is an important issue.

The number of blackouts nationwide is decreasing every year due to improvements in distribution technology and distribution management technology. On the other hand, the number of power outages, which are a kind of power failure that causes power failures of electric power distribution facilities of customers using electric power, causes the entire power distribution system to fail. In recent years, the share of power outages accounted for 30-40% of total power outages, so the power outage should be reduced for power providers.

When a power outage occurs in a distribution line, in order to prevent a power outage repeatedly occurring due to the same cause, a line instantiation is performed for each power outage to analyze accurate causes of power failure. In addition, the company is continuously strengthening its tracks through its power facilities, and is making planned investments. However, there is a lack of investment and maintenance in the power receiving facility of the customer, and the fact that the cause of power failure in the power failure exist because the customer lacks expertise in electric facility management.

In addition, when the power failure is a power outage, it is difficult for the supplier to access the customer's faucet facility to identify the cause of the power failure, difficult to grasp the failure information, and more difficult to identify the cause of the failure when the customer conceals the failure of the faucet facility. . As a result, the waste of manpower and costs required for the management of the distribution system is seriously increased.

However, the prior art focuses only on the accurate detection of fault currents in power distribution and the classification of types of power failures, making it difficult to clearly identify electrical failures in the customer's power installations. It has been difficult to prevent information or to grasp information on the power failure, and inconveniences in operating the power distribution system have existed.

Accordingly, an object of the present invention is to clearly grasp the state of the power outage that may occur due to a failure of the power receiving facility of the customer. In more detail, it is necessary to grasp the electrical failure of the customer's power receiving equipment, to determine whether a power failure occurs on the basis of the electrical failure, and to manage the users of the power receiving equipment where the power failure occurs to cope with the subsequent power failure. The purpose is to enable efficient coping.

In order to achieve the above-mentioned object, the ripple detection device according to an embodiment of the present invention, the current sensing unit for detecting whether the current in the transformer for supplying power to the power receiving facility of the user exceeds the fault detection current; A voltage detector for detecting whether a voltage of the transformer is less than a no-voltage threshold; And when the current detection unit detects a current exceeding the fault detection current, and the voltage detection unit detects a voltage less than the voltage-free threshold value, the failure to generate and send a power failure generation signal due to the electrical failure of the user's power receiving equipment Characterized in that it comprises a determination unit.

The current detector and the voltage detector may detect current and voltage of a cut out switch (COS) installed at a primary side of the transformer.

If the current detection unit detects a current exceeding the fault detection current, and the voltage detection unit detects a voltage below the no-voltage threshold value within the preset no-voltage detection time from the detection time of the current exceeding the fault detection current. Characterized by generating a power failure occurrence signal due to the electrical failure of the.

The no-voltage detection time may be a time from when a current exceeding the fault detection current is sensed to completion of a power failure process including transmission and reception of power failure information, operation of a substation breaker, and operation of a distribution facility protection device.

The fault detection current may be a current value set between the rated current of the power receiving facility and a current corresponding to the capacity of the substation breaker. The no-voltage threshold may be set to a value less than 80% of the reference voltage of the failure detection device of the distribution automation system.

Ripple power failure management system according to an embodiment of the present invention, by detecting the current and voltage measured in a transformer for supplying power to the user's power equipment, a signal relating to the occurrence of a power outage due to electrical failure in the user's power equipment Ripple interruption detection device as described above for generating and transmitting the; A relay unit configured to receive a signal related to occurrence of the power failure from the power failure detection device and to transmit the power receiving facility information determined as an electrical failure and the user information corresponding to the power receiving facility; And it characterized in that it comprises a management server for managing the user information of the power receiving facility where the electrical failure has occurred.

Ripple power failure management method according to an embodiment of the present invention, the current sensing unit for detecting whether the current in the transformer for supplying power to the power receiving facility of the user exceeds the fault detection current; Detecting, by the voltage detector, whether a voltage of the transformer is less than a no-voltage threshold; And when the current detection unit detects a current exceeding the fault detection current and the voltage detection unit detects a voltage below the no-voltage threshold value, generates and sends a power failure occurrence signal due to an electrical failure of the user's power receiving facility. It includes a step.

In addition, the relay unit transmits the faucet facility information determined to be an electrical failure and the user information corresponding to the faucet facility in response to a signal of the outage interruption received from the ripple detection device, and the management server of the faucet facility in which the electric failure has occurred. Managing the user information may be further included.

According to the present invention, by monitoring the current and voltage in the cut-out switch that can determine the power failure, and by determining the abnormality, it is possible to quickly determine whether an electrical failure of the power receiving equipment. In addition, by considering the current and voltage at the same time it can be clearly determined whether the electrical failure of the power receiving equipment. In the distribution automation system, by managing information on the user of a power receiving facility that has an electrical failure, it is possible to efficiently identify and manage the cause when a power failure occurs, and prevent the occurrence of a future power failure in advance. Even without instantaneous, it is possible to clearly identify the cause of the power failure.

1 is an apparatus diagram of an apparatus for detecting a power interruption according to an exemplary embodiment of the present invention.
2 is an apparatus diagram of an apparatus for detecting a power interruption according to another embodiment of the present invention.
3 is a block diagram of a system for managing power failure according to an embodiment of the present invention.
4 is a time table for the functional flow of the present invention.
5 illustrates a first embodiment of the present invention.
Figure 6 shows a second embodiment of the present invention.
7 is a flowchart of a method for managing power failure according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS Hereinafter, an apparatus for detecting a power interruption according to an embodiment of the present invention and a system and method for managing a power failure using the same will be described. In the following description, the same reference numerals will mean the same configuration.

1 is an apparatus diagram of an apparatus for detecting a power interruption according to an exemplary embodiment of the present invention.

Referring to FIG. 1, an apparatus for detecting a power interruption 100 according to an exemplary embodiment of the present invention includes a current detector 110, a voltage detector 120, and a failure determiner 130.

In the present invention, the power failure detection apparatus 100 measures the current and voltage at the boundary between the power receiving facility of the user of the electric power and the power supplier. In addition, the present invention is based on operating on a distribution automation system that is recently spread.

The current sensing unit 110 detects whether a current in the transformer 500 that supplies power to the power receiving facility 300 of the user exceeds the fault detection current. More specifically, the current of the cut out switch (COS, Cut Out Switch) 200 installed on the primary side of the transformer 500 is sensed.

The reason for measuring the current and voltage of the cut-out switch (hereinafter referred to as COS) is as follows.

Many related prior arts focus only on the detection of fault currents, and the secondary, MOF (breaker) of circuit breakers, which are easy to detect currents, without the detailed review of the detection location or trouble with the installation location of the fault facilities. In order to connect meter to instrument transformer, high voltage electric user, it has detected current from secondary of high voltage current to small voltage current and metering out fit.

However, the present invention can more clearly grasp the electrical failure of the power receiving facility 300 of the user in a situation where the occurrence of an electrical failure such as a power failure, the sudden power outage generated from the power receiving facility 300 of the user has recently increased rapidly. In order to sense the current of the COS.

The number and share of the outages from 2007 to 2009 are as follows.

Referring to Table 1, it can be seen that more than 95% of the ripple occurs at the primary side of the MOF. Therefore, in the present invention, by specifying the current and voltage in the COS 200 that is the primary side of the transformer 500 including the MOF, it is possible to clearly determine whether or not the power failure.

In an embodiment of the present invention, the ripple detection device 100 performs detection for an extra-high pressure user of less than 3000kW. Many related prior arts are simply defined as "high voltage users" and have performed detection of electrical failures. In addition, the user's faucet facility has been monitored by simply stating that it is a high voltage user without classification according to processing and underground supply according to the supply line and classification of property limit (the boundary between property of user and supplier).

However, the present invention is intended to carry out remote operation and automation for underground supply users, users of 3000kW or more and special users of less than 3000kW in the future. It may be applicable.

The property limit and the conventional market share based on the contract power of the extra-high voltage user are as follows.

Referring to Table 2, it can be seen that the property threshold for the special high-pressure user of less than 3000kW is COS, and has the highest occupancy, which is suitable for the ripple detection.

As described above, the current sensing unit 110 detects the current of the COS 200 installed in the transformer 500 for supplying power to the faucet facility 300 of the extra-high voltage user.

If an electrical failure occurs, a large current flows suddenly to the power receiving facility (300). The current sensing unit 110 detects whether the current flowing through the COS 200 is applied beyond the fault detection current using this phenomenon.

The fault detection current is a threshold value of a current used to primarily determine an electrical fault on the power receiving facility 300 side through a current flowing in the COS 200. The fault detection current is a value calculated based on the results of statistics based on the fault current detected at the time of power failure. Although many prior arts have consistently referred to simply the name of abnormal current without defining the range of the fault current, the minimum fault current and the detection time, in the present invention, in order to clearly identify the electrical fault of the power receiving facility 300, fault detection is performed. Set the current to the threshold of the current applied to the COS.

In the embodiment of the present invention, the fault detection current may be a current value set between a rated current of the power receiving facility 300 (for example, 75 A) and a current (or minimum fault current) corresponding to the capacity of the breaker of the substation 400. have.

In the embodiment of the present invention, the rated current of the power receiving facility 300 having a contract power of 3000 kW among the range of the high voltage user under 3000 kW, which is the sensing target, is 75 A. In general, considering the inrush current, the capacity of the circuit breaker of the substation is selected to be about 2 to 3 times the rated current in accordance with the technical standard of the power receiving facility 300. In addition, the minimum fault current generated statistically is 119A. Reflecting the above, the fault detection current is set. In an embodiment of the present invention, the fault detection current may be 100 A, for example.

That is, the current detector 110 immediately exceeds the fault detection current to the voltage detector 120 and the fault determiner 130 when the current applied to the COS exceeds the fault detection current (for example, 100A). You will be notified that you have detected.

The voltage detector 120 detects whether the voltage of the COS 200 of the transformer 500 is less than the no-voltage threshold.

Even if a large current is suddenly applied to the power receiving facility 300, if the voltage applied to the COS 200 rises again to maintain the voltage on the normal power supply, it is not a sudden power failure due to an electrical failure in the power receiving facility 300. will be. If an electrical failure occurs in the power receiving facility 300 to operate the breaker of the substation 400, the voltage applied to the COS 200 will also have to be lowered. Therefore, the voltage detector 120 secondly detects whether the voltage applied to the COS 200 is less than the no-voltage threshold value, so that the electrical failure in the power receiving facility 300 can be more clearly determined. Will be.

The no-voltage threshold may also be referred to as a life and death line voltage, and is set to a value less than 80% of the reference voltage of the failure detection device of the distribution automation system. Preferably, a value of 80% will be the no voltage threshold. The no-voltage threshold may for example be 10560V (when the reference voltage of the fault detection device of the distribution automation system is 13200V, ground voltage reference).

As the voltage detection unit 120 performs the function of the secondary failure determination, specifically, the electrical failure in the power receiving facility 300 only when the current exceeds the failure detection current and the voltage satisfies the condition below the no-voltage threshold. By judging clearly by the ripple interruption by this, the reliability of failure determination can be improved. On the other hand, in the conventional technology, since only the abnormal current is judged, there is a problem that an error that is determined as a failure for information other than a failure such as an inrush current cannot be avoided.

When the voltage detector 120 detects that the voltage of the COS 200 is less than the no-voltage threshold value, the voltage detector 120 notifies the failure determiner 130.

The failure determination unit 130 detects a current exceeding the failure detection current by the current detection unit 110, and when the voltage detection unit 120 detects a voltage less than the no-voltage threshold value, the power receiving facility of the user ( An electrical failure of 300 has occurred, and the power failure due to the operation of the circuit breaker also generates and transmits a signal indicating that the power failure is a sudden power failure due to the electrical failure of the power receiving facility 300.

As mentioned above, the power receiving equipment 300 must satisfy the situation that the current exceeds the fault detection current and the voltage is below the no-voltage threshold by receiving information from the current detecting unit 110 and the voltage detecting unit 120. The reliability of the failure determination can be improved by clearly determining the ripple interruption caused by the electrical failure at.

In more detail, the failure determination unit 130 detects a current in which the current detection unit 110 exceeds the failure detection current, and at the same time, the voltage detection unit 120 exceeds a failure detection current in a voltage less than the no-voltage threshold value. When the current is detected within a predetermined voltage-free detection time from the detection time of the current, the ripple power generation signal generated by the electrical failure of the power receiving facility 300 is generated.

The no-voltage detection time is the period after which a current exceeding the fault detection current is detected until all power failure-related processes, including the transmission and reception of information related to power failure, the operation of circuit breakers in substations, and the operation of distribution equipment protection equipment, are completed. It can mean time.

In general, when the current applied to the COS 200 corresponding to the power receiving equipment 300 exceeds the fault detection current, the voltage also drops, and the blackout process starts. If an electrical failure occurs in the power receiving facility 300, after the power failure process is started, the voltage drops again, and it may be detected that there is an abnormality in the power receiving facility 300.

In the present invention, in order to determine whether there is an electrical failure in the power receiving facility 300, it is to detect whether the phenomenon that the voltage applied to the COS 200 falls until at least one of the power failure process is completed. On current distribution automation systems, the time to complete the power outage process is for example 50 seconds. This time is the time until the circuit breaker of the distribution line protection device and the substation 400 completes its operation (for example, 26 seconds), and the data display time (for example, 20 seconds related to the failure notification in the distribution automation system). ) And information processing time (for example, 4 seconds).

If the failure determination unit 130 receives a signal indicating that the electrical detection unit 120 detects a voltage less than the no-voltage threshold within one or more times within the above-mentioned no-voltage detection time, the electric power failure facility 300 is electrically damaged. This occurred, and the current power outage generates a signal called a power outage due to an electrical failure of the power receiving facility 300.

By performing the above function, it is possible to clearly determine that the power failure generated is a power outage due to an electrical failure of the power receiving facility 300, and in each COS 200 connected to each power receiving facility 300, The electrical failure can be clearly identified. Accordingly, not only grasping that it is a power outage, but also the power receiving facility 300 that caused the electrical failure that caused the power outage 300 is also able to obtain the effect that can be clearly identified using the distribution automation system. Can be.

In addition, the ripple detection device 100 needs to secure a separate power source. This is because if the breaker of the substation 400 is operated by an electrical failure and a power failure occurs, the task of detection and communication should be possible.

2 is an apparatus diagram of an apparatus for detecting a power interruption according to another embodiment of the present invention. In the following description, portions that overlap with the description of FIG. 1 will be omitted.

Referring to FIG. 2, a reference value storage unit 140 is added to the ripple detection device 100, and the current sensing unit 110 includes a current measuring unit 111 and a current comparing unit 112, and a voltage It can be seen that the detector 120 includes a voltage measurer 121 and a voltage comparator 122.

The current measuring unit 111 and the voltage measuring unit 121 perform a function of measuring the current and voltage of the COS 200. The actual current and voltage values are generated and returned.

The reference value storage unit 140 stores the fault detection current and the no-voltage threshold described in FIG. 1. The reference value storage unit 140 performs a function of managing fault detection current and no-voltage threshold values, which are reference values that may vary according to power failure information and power measurement information updated in real time by the distribution automation system.

The current comparison unit 112 compares the current value of the COS 200 measured by the current measurement unit 111 with the fault detection current received from the reference value storage unit 140, and the measured current exceeds the fault detection current. Determine whether or not, and return the determination result to the failure determination unit 130.

The voltage comparison unit 122 compares the voltage applied to the COS 200 measured by the voltage measuring unit 121 with the no-voltage threshold value received from the reference value storage unit 140, so that the measured voltage is no-voltage threshold. It determines whether it is less than the value, and performs a function to return the determination result to the failure determination unit 130.

The failure determining unit 130 performs a function as described in FIG. 1, and generates a ripple power generation signal due to whether an electrical failure occurs in the power receiving facility 300 and an electrical failure of the power receiving facility 300. To 600.

3 is a block diagram of a system for managing power failure according to an embodiment of the present invention. In the following description, portions that overlap with the description of FIGS. 1 and 2 will be omitted.

Referring to FIG. 3, the power failure management system according to the embodiment of the present invention includes a power failure detection apparatus 100, a relay unit 600, and a management server 700.

Since the ripple detection apparatus 100 has the same function and configuration as those of FIGS. 1 and 2, the description thereof will be omitted.

The relay unit 600 receives a signal related to the occurrence of the power outage from the power failure detection device 100, and receives information of the power receiving facility 300 and user information corresponding to the power receiving facility 300 determined as an electrical failure. Performs a function of delivering to the management server 700. Hereinafter, detailed functions of the relay unit 600 will be described.

The relay unit 600 basically transmits the data transmitted from the power failure detection apparatus 100 belonging to the relay unit 600 to another relay unit or the management server 700. In particular, when the power failure detection apparatus 100 is difficult to communicate directly with the management server 700 side, such as a feeder remote terminal unit (FRTU, Feeder Remote Terminal Unit), a plurality of relay units 600 may be connected to transmit and receive data. The communication method in the relay unit 600 may use a wired or wireless method.

First, the wired method is used when there are a lot of interference factors for wireless communication around the ripple detection device 100, and an inlet distance with a side capable of transmitting and receiving data to and from the management server 700, such as a switchgear control box. It is within 500m and can be used in a place where it is easy to secure the power at all times.

Wireless methods can be largely classified into RF, Binary-CDMA, and D-TRS. Where it is impossible to secure power at all times, the RF method will be effective. If it is possible to secure power at all times within 500m, the Binary-CDMA method will be effective.

The wireless scheme should be where there are few radio communication interference elements. In addition, the linear distance to the part that can transmit and receive data stably to the management server 700 side, such as switchgear control box is effective within 2km. The D-TRS method will be a valid method when the straight line distance to the switchgear control box exceeds 2 km. Detailed description of the wired method is omitted since it is a technique widely used by those skilled in the art in the technical field of the present invention.

The relay unit 600 may be installed together with the ripple generator 100 to manage the transmission and reception of data. Therefore, it should be designed as a structure that can be installed in the distribution line. It should also include a composition that is more likely to be exposed to the outside world and can withstand climate.

Preferably, it may be formed in the form of a clamp to be firmly fixed to the wire, but other shapes may be possible. Installations should be electrically insulated from the distribution lines so that the distribution lines are not affected.

The relay unit 600 should also be able to transmit and receive data by securing its own power supply during power outages. For example, charging may be performed using an induction current collecting method, and may include a power source that can be used for at least 72 hours. The power source may have a configuration that maintains the stability of the power source by maintaining the magnitude of power due to the secondary induced current to a predetermined level even if the current flowing in the primary side of the line changes.

The relay unit 600 may be further connected to a communication converter (not shown). The communication converter performs a function of transmitting data to be transmitted to a terminal (FRTU) of a distribution automation system. The communication converter may be attached to the FRTU. Accordingly, the relay unit 600 may mean both a narrow relay unit included in the ripple detection device 100 and a broad relay unit including a communication converter attached to the FRTU. In an embodiment of the present invention, the relay portion in consultation is called the relay portion 600.

The communication converter may be a structure that can be physically connected to a distribution automation control box such as FRTU. It can also include a self-operating power supply during power outages. It is connected to distribution automation control box including FRTU and serial port, and communication method compatible with distribution automation communication protocol can be used.

The communication method of the distribution automation control box such as the communication converter and the FRTU and the management server 700 will be the same as the above-described type of wired or wireless method.

In transmitting the data to the management server 700 in the distribution automation control box, it will be necessary to distinguish between the FRTU area and the ripple information transmission / reception area.

To this end, the failure determination unit 130 and the relay unit 600 measures the voltage of the COS 200 until the power failure process is completed, as mentioned in the description of FIGS. 1 and 2, and after the power failure process is completed. Ripple power generation signal due to electrical failure of the power receiving facility 300 is to be transmitted. Accordingly, when the transmission and reception of all the information required for the power failure process is completed, the information related to the power failure will be transmitted and received, thereby minimizing the occurrence of errors due to crosstalk of the information.

In addition, an address during data transmission and reception may also distinguish between a FRTU area and a sudden power failure management area. For example, in the FRTU area, 15 to 5 pins can be set as FRTU's own address, and in the case of 15 pins, FRTU can decide whether to manage fault detection devices (1 when in use, 0 when not in use). . Therefore, if there is no need to transmit and receive information on the ripple in the FRTU or the ripple management cannot be performed due to the performance of the FRTU, the value of 15 pins, that is, bit 15, may be set to zero.

Transmitting and receiving information necessary for the management of the power failure may use an address of 4 to 0 pins. In the address, information such as whether there is a failure, an identifier of the power receiving facility 300 in which an electrical failure has occurred, an identifier of a user corresponding to the power receiving facility 300, and the like may be transmitted and received.

Accordingly, when the sudden power failure detection apparatus 100 detects the sudden power failure, the sudden power failure generation information to the management server 700 is generated, and the generated information is transmitted. When the FRTU receives the power failure occurrence information through the relay unit 600 or the like, the FRTU transmits the power failure occurrence information to the management server 700. Of course, the FRTU will perform the step of determining whether information is being transmitted or received in the communication network to prevent the information from being mixed.

The relay unit 600 according to the above-mentioned function, the power failure occurrence information on the management server 700 side, the identification information of the power receiving facility 300 where the electrical failure occurred, and the identification information of the user corresponding to the power receiving facility 300. And so forth.

The management server 700 manages user information of the power receiving facility 300 in which an electrical failure has occurred. In other words, by managing the user information having the faucet facility 300 having a history of a sudden power outage, it is possible to efficiently manage the subsequent power failure.

When the management server 700 receives the sudden power outage generation information, the identification information of the power receiving facility 300 having an electrical failure, and the identification information of the user corresponding to the power receiving facility 300 from the relay unit 600, the distribution automation system The storage location corresponding to the received information managed on the web site will be searched and the database on the distribution automation system will be updated using the received information.

4 is a time table for the functional flow of the present invention. In the following description, portions overlapping with the description of FIGS. 1 to 3 will be omitted.

Referring to FIG. 4, the functions of the components of the present invention are performed from the time t0 at which the current detector 110 detects that the current of the COS 200 exceeds the fault detection current.

The time point t0 may be a time point at which the current detector 110 detects a current exceeding the fault detection current, or may mean a time point at which a failure occurs. This is because the current detector 110 may detect a current exceeding the fault detection current at the same time as the fault occurs, but may also detect after a certain delay time.

When the time t1 after a predetermined time has elapsed from the time t0 (for example, two seconds), the circuit breaker 410 of the substation 400 operates to start a power failure. Therefore, the current sensing unit 110 should detect a current exceeding the fault detection current before the power failure starts and the current does not flow, that is, before t1.

When the time t2 after the predetermined time (i.e., no-voltage sensing time) has passed from the time t0, the power failure process will be completed. If the voltage detection unit 120 does not detect the voltage below the no-voltage threshold once or more from t0 to t2, it will be determined that it is not an electrical failure on the power receiving facility 300 side. The failure determining unit 130 will generate a signal informing of the power failure due to the electrical failure of the 300 side.

The maximum time that the signal to inform the sudden power failure can be generated will be t2, and if a voltage below the no-voltage threshold is detected between t0 and t2, and a signal indicating the power failure is generated by the failure determination unit 130, The transmission of the signal will be delayed until t2 when the power failure process is completed. When t2 is reached, the failure determination unit 130 includes a ripple interruption generation signal, identification information of the failure power receiving facility 300, and identification information of the user corresponding to the failure reception facility 300 through the relay unit 600. Ripple power management information will be sent to the management server 700 side.

5 illustrates a first embodiment of the present invention. In the following description, portions overlapping with the description of FIGS. 1 to 4 will be omitted.

Referring to FIG. 5, a plurality of transformers 500 may be installed in the first telegraph pole 150, and each of the transformer 500 may have a built-in ripple detection device 100 (not shown) or connected thereto. have.

Each of the transformer 500 may be connected to a plurality of power receiving equipment (300, 301, 302). The FRTU, that is, the distribution automation system terminal 610, is installed in another telephone pole 160, and receives information of the power receiving facility 300 having an electrical failure among the power receiving facilities from the relay unit 600 using wired or wireless communication. . The FRTU will then send information about the outage management to the management server 700.

Figure 6 shows a second embodiment of the present invention. In the following description, portions overlapping with the description of FIGS. 1 to 5 will be omitted.

Referring to FIG. 6, in the second embodiment, the TRS repeater is configured to directly transmit and receive information on the power failure management from the relay unit 600 to the management server 700 without using the FRTU by using the D-TRS communication method. 170 is provided. Accordingly, the relay unit 600 may also transmit the power failure management information using the D-TRS method to the management server 700 that exists at a long distance of 2 km or more.

7 is a flowchart of a method for managing power failure according to an embodiment of the present invention. In the following description, portions that overlap with the description of FIGS. 1 to 6 will be omitted.

First, a step (S1) of detecting whether a current of the COS 200 exceeds a fault detection current is performed by the current detector 110. In addition, the voltage detection unit 120 detects whether the voltage applied to the COS 200 is less than the no-voltage threshold value from the current detection time of the current detection unit 110 to a preset no-voltage detection time (S2). do.

When both of the steps S1 and S2 are satisfied, a step (S3) of generating a signal related to the occurrence of the power failure due to the electrical failure of the power receiver 300 of the failure determination unit 130 is performed.

When the step S3 is performed, it is determined that the electrical failure in response to the occurrence of the sudden power failure signal from the power failure detection device 100 through the data transmission and reception device including the failure determination unit 130, the relay unit 600, and the communication converter. The step S4 of transmitting the power receiving facility 300 information and the user information corresponding to the power receiving facility 300 is performed.

Finally, the management server 700 receiving the information on the power receiving facility 300 and the user information corresponding to the power receiving device 300, which is determined to be an electrical failure, manages user information of the power receiving facility 300 in which the electrical failure has occurred. (S5) may be performed.

The description of the apparatus for detecting the power failure according to the embodiment of the present invention mentioned in the description of FIGS. 1 to 7 and the system and method for managing the power failure using the same should be used only for descriptive purposes, and the claims are limited. It is not. In addition to the embodiments of the present invention, it will be obvious that the equivalent invention that performs the same function as the present invention will also belong to the scope of the present invention.

Claims (16)

A current detector for detecting whether a current in a transformer that supplies power to a user's power receiving facility exceeds a fault detection current;
A voltage detector detecting whether the voltage of the transformer is less than a no-voltage threshold; And
When the current detection unit detects a current exceeding the fault detection current, and the voltage detection unit detects a voltage less than the voltage-free threshold value, generates and sends a power failure generation signal due to an electrical failure of the power receiving equipment of the user Ripple failure detection device comprising a failure determination unit. The method according to claim 1,
The current detector and the voltage detector,
Ripple detection device characterized in that for detecting the current and voltage of the cut out switch (COS, Cut Out Switch) installed on the transformer primary side. The method according to claim 1,
The failure determination unit,
If the current detection unit detects a current exceeding the fault detection current, and the voltage detection unit detects a voltage below the no-voltage threshold value within a preset no-voltage detection time from the detection time of the current exceeding the fault detection current. Ripple interruption detection device for generating a ripple interruption generation signal due to electrical failure of the facility. The method according to claim 3,
The no-voltage detection time is,
And a time to completion of a power failure process including transmission and reception of power failure information, operation of a substation breaker, and operation of a distribution facility protection device after a current exceeding the fault detection current is detected. The method according to claim 1,
The fault detection current is,
Ripple interruption detection device characterized in that the current value set between the rated current of the power receiving equipment and the current corresponding to the capacity of the substation breaker. The method according to claim 1,
The no-voltage threshold is,
Ripple failure detection device, characterized in that set to less than 80% of the reference voltage of the failure detection device of the distribution automation system. Ripple interruption detection device for detecting the current and voltage measured by the transformer for supplying power to the power receiving facility of the user to generate and send a signal relating to whether or not the power failure occurs due to an electrical failure in the power receiving facility of the user;
A relay unit configured to receive a signal related to occurrence of the power outage from the power failure detection device and to transmit the power receiving facility information determined as an electrical failure and the user information corresponding to the power receiving facility; And
Ripple management system comprising a management server for managing the user information of the electrical installation facility where the electrical failure has occurred. The method according to claim 7,
The ripple detection device,
Ripple management system, characterized in that for detecting the current and voltage of the cut out switch (Cut Out Switch) installed on the transformer primary side. The method according to claim 7,
The ripple detection device,
Generating a signal regarding whether a power failure occurs due to an electrical failure of the power receiving facility based on whether the current of the transformer exceeds the fault detection current and whether the voltage of the transformer is below a no-voltage threshold value. Ripple Power Management System. The method according to claim 9,
The ripple detection device,
When a current exceeding the fault detection current is sensed and a voltage below the no-voltage threshold value is detected within a preset no-voltage detection time from a detection time of the current exceeding the fault detection current, the electric wave of the power receiving equipment is caused by an electric fault. Ripple management system, characterized in that for generating a power failure signal. The method according to claim 10,
The no-voltage detection time is,
And a time from when the current exceeding the fault detection current is detected, to the completion of a power failure process including transmission and reception of power failure information, operation of a substation breaker, and operation of a distribution facility protection device. The method according to claim 9,
The fault detection current is,
Ripple management system, characterized in that the current value set between the rated current of the power receiving equipment and the current corresponding to the capacity of the substation breaker. The method according to claim 9,
The no-voltage threshold is,
Ripple management system, characterized in that set to less than 80% of the ground voltage, the reference voltage of the failure detection device of the distribution automation system. Detecting, by the current sensing unit, whether a current in a transformer that supplies power to a power receiving facility of a user exceeds a fault detection current;
Detecting whether a voltage of the transformer is less than a no-voltage threshold; And
When the fault determination unit detects a current in which the current detection unit exceeds the fault detection current, and the voltage detection unit detects a voltage below the no-voltage threshold value, a ripple interruption generation signal due to an electrical failure of the power receiving facility of the user Ripple management method comprising the step of generating and sending. The method according to claim 14,
The relay unit further comprises the step of transmitting the power receiving equipment information determined as an electrical failure and the user information corresponding to the power receiving equipment in response to the signal generation of the power outage received from the power failure detection device. How to manage outages. The method according to claim 14,
The management server further comprises the step of managing the user information of the power receiving equipment for which the electrical failure has occurred.

Images