KR100820936B1 - A control system and a control method combined of manned/unmanned substation - Google Patents

Abstract

The present invention provides a remote management system of a substation, comprising: a fault detection apparatus and an environmental monitoring apparatus in a manned substation; A controller for controlling the entire system through the fault detection device and an environmental monitoring device; An alarm device for notifying a function setting and a corresponding situation according to the result of the controller; A manned substation comprising an interface, which is a communication module for monitoring the state of the system in a PC; Fault detection device and environment monitoring device in unmanned substation; A controller for controlling the entire system through the fault detection device and an environmental monitoring device; An alarm device for notifying a function setting and a corresponding situation according to the result of the controller; An unmanned substation including an SMS device for sending an alarm text or a voice when the situation occurs in the controller; And a unmanned substation integrated management system and unmanned substation integrated control, characterized in that it comprises a network modem to perform real-time communication via WEB to enable the manned substation to manage and control the unmanned substation. It is about a method.

Manned substation, unmanned substation, leakage current, motor level check device, SMS device

Description

Integrated control system for manned and unmanned substations {a control system and a control method combined of manned / unmanned substation}

1 is a block diagram of an embodiment of a unmanned and unmanned substation integrated management system according to the present invention,

2 is a view showing an embodiment of a graphic informing the information of the system in the LCD display device of the system according to the present invention,

3 is a view showing the flow of operation according to an embodiment of the integrated / unmanned substation integrated control method according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: manned substation

20: unmanned substation

110: controller in the manned substation

140: network modem in the manned substation

210: controller in an unmanned substation

230: Network modem in unmanned substation

260: SMS device in unmanned substation

The present invention relates to an integrated management system of unmanned substations and a control method thereof, and more particularly, to the current, voltage, leakage current, overcurrent, local hazardous area temperature, vacuum breaker of the unmanned substation as well as the manned substation. It measures current status, motor status, rainfall around substations, and promptly responds to the administrator by voice or text message when an emergency occurs, so that accidents can be prevented.

Today's Substation Automation System has the ability to manage power quality from simple power monitoring and control functions in the past, diagnose facilities online and predict lifespan, manage facilities from disasters, and protect substations from intruders. It is evolving into advanced active intelligent system instead of passive or simple system by adding security disaster prevention function. Accordingly, when an abnormality occurs in various process control systems, it can be automatically reported to related organizations or related persons, and emergency response is handled automatically by using long-distance communication in case of abnormality such as fire, equipment failure or motor operation problem. By automatically notifying the management center to this, efforts are being made to reduce the waste of manpower such as having to wait for full-time workers to manage the device.

However, most of the control facilities are installed with a large number of sensors and motors according to the unmanned and automated trends, so they need to observe their operation status and prompt response is necessary, so full-time workers should be arranged. In case of various abnormalities, even if full-time workers in the field need to take action immediately, or if the situation is not recognized or the distance between the motor and the site control panel is far, There is a problem that unexpected damage occurs because you can not hear.

In addition, when operating unmanned substations only, when an unpredictable situation such as a natural disaster occurs and the operation of an unmanned substation stops, the substation is based on various information necessary for the operation of the substation until recovery beyond the uninterruptible power supply (UPS). There is no proper countermeasure for the operation, and there is a problem in that the operation information of the usual unmanned substation cannot be known in detail because the worker does not reside.

The present invention was devised to solve the above-mentioned problems of the related art, and it relates to a substation management system and a control method for integrating a manned substation and an unmanned substation having a similar structure, highlighting their advantages and solving the problems. . In addition to the information that can be obtained from manned substations, all information obtained by measuring current, voltage, leakage current, local hazardous area temperature, current state of vacuum breaker, and environmental factors of substations in unmanned substations By monitoring and controlling, we will respond quickly to emergencies and prevent accidents.

The present invention for achieving the object as described above relates to a unified substation integrated management system and a unified substation integrated control method.

The integrated / unmanned substation integrated management system according to the first aspect of the present invention includes a first failure detection device and an environmental monitoring device in a manned substation; A first controller for controlling the entire system through the first failure detection device and an environmental monitoring device; A first alarm device for notifying a function setting and a corresponding situation according to a result of the first controller; A manned substation comprising an interface, which is a communication module for monitoring the state of the system in a PC; A second fault detection device and an environmental monitoring device in an unmanned substation; A second controller for controlling the entire system through the second fault detection device and an environmental monitoring device; A second alarm device for notifying a function setting and a corresponding situation according to the result of the second controller; An unmanned substation including an SMS device for sending an alarm text or a voice when each situation occurs in the second controller; And a network modem configured to perform real-time communication through WEB in order to enable management and control of the unmanned substation in the manned substation.

The first failure detection device and the second failure detection device includes a phase check device for voltage / current, a leak current check device, a vacuum breaker (VCB) state check device, a motor operation state check device, and a drainage level check device. The first environmental monitoring device and the second environmental monitoring device may include a temperature sensor, a rainfall measurement sensor, and a humidity sensor for preventing fire.

On the other hand, the first controller and the second controller in the field to control the operation processing unit (MPU) and a plurality of motors in the field based on the results obtained from the first and second fault detection device and the environmental monitoring device, respectively Each of the motor pump control device for the operation, the processing unit (MPU) checks the phase of the voltage and current, check the state of the vacuum circuit breaker (VCB), or check the operating state of the motor, The data is calculated and processed, and the motor-pump control unit controls the water level of the plurality of motors according to the height of the water level while setting the range of the drainage level to 4-20 mA, and starts / stops each of the plurality of motors. Can be.

Further, the first alarm device and the second alarm device is a display device for directly viewing the function setting or the corresponding situation according to the results of each of the first and second controllers in the field, a speaker for audible alarm when an error occurs in the system. Each of the network modem is preferably installed in the manned substation and the unmanned substation so as to perform real-time communication via WEB between the manned substation and the unmanned substation. The interface is a communication module for monitoring various states of the plurality of motors in a PC, and may be RS-232 to RS-485.

In the integrated / unmanned substation integrated control method according to the second aspect of the present invention, in the substation alarm control method for operating the generation alarm to notify the administrator when a plurality of motors or substation alarm system in the substation occurs, Ethernet (WEB) initializing the CPU and the chip while the initial power of each of the substation and unmanned substation each equipped with a network modem is turned on so as to exchange information of the substation through communication and enable uncontrolled control of the entire system; Determining whether the key is input in the manned substation and the unmanned substation and processing the system if there is a key input, and then checking the system; Calculating / processing data in each of the manned substations and the MPUs of the unmanned substations based on the result of the inspection of the system; Checking each of the mandatory substations and the unmanned substations for displaying the data on the system check in the form of a graph so that the user can check the data using an LCD and checking whether there is an error in the system based on the display; Checking whether the cause of the error is due to a communication failure between the manned substation and the unmanned substation, and returning to an initial state after a request for confirming a communication state when there is no error in the system or due to a communication failure; If there is no abnormality in the communication failure check result, it is determined whether the vacuum circuit breaker (VCB) abnormality, motor abnormality, and the motor level abnormality in the manned substation and unmanned substation sequentially, respectively, the initial state if the system is not abnormal Returning to; Judgment result of whether the vacuum breaker (VCB) is abnormal, whether or not a plurality of motors, the water level abnormality of the plurality of motors in the unattended substation leaves a text or voice message to the administrator through the SMS device, if there is no abnormality Returning to a state; And the administrator self-controlling each of the plurality of motors after receiving the result of the determination of the abnormality of each part in the manned substation or the system error message in the unmanned substation.

Here, the step of obtaining system-related information of the manned substation and the unmanned substation includes: a phase check device for voltage / current, a leak current check device, a vacuum breaker (VCB) state check device, a motor operation state check device, and a drainage level check A device, a temperature sensor for preventing fire, a rainfall measurement sensor, and a humidity sensor may be obtained by mounting the external substations and the unmanned substations respectively, and the checking step for the system may be voltage, current, phase checking, or vacuum breaker. (VCB) It is to check the state or the operation state (water level, temperature) of the motor.

In addition, the mandatory substation preferably includes the step of storing the system information of the unmanned substation or information related to the cause, reason, and subsequent management / control process of the generation of the error signal when the system error signal occurs.

Hereinafter, an embodiment of a unmanned substation integrated management system and a unmanned substation integrated control method according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the invention to those skilled in the art.

1 is a block diagram of an embodiment of an integrated / unmanned substation integrated management system according to a first aspect of the present invention. Specifications of the integrated / unmanned substation integrated management system according to the present invention to satisfy the system specifications of Table 1 below.

Temperature -20 ~ 80 ℃ Relative humidity 5 ~ 95RH Power supply 1ØAC 20 ~ 264V 60Hz Rated current 100 mA Power Consumption 20 W Communication method Between manned substation and unmanned substation: Ethernet (WEB) PC-Controller: RS-232 communication Memory backup time 5 years (min) Precision ± 0.3% Sampling interval 50 ms Fire detector NSC-105K Withstand voltage AC 2KV / 1min-Test between power supply terminal and case Insulation Resistance 10㏁ or more-Test between power terminal and case

Referring to FIG. 1, the unmanned substation integrated management system according to the first aspect of the present invention includes a manned substation and an unmanned substation having a similar structure capable of real-time communication through a network modem.

First, referring to the manned substation, the manned substation 10 includes a phase check device 101 of voltage, a phase check device 102 of current, a leak check device 103, a vacuum breaker (VCB) state check device ( 104, a fault detection device such as a motor operation state checking device 105, a drainage water level checking device 106, and an environmental monitoring device such as a temperature sensor 107, a rainfall measurement sensor 108, and a humidity sensor 109; It is composed of a controller 110 for controlling the entire system and the plurality of motors 190 by receiving the information obtained therefrom, and an alarm device for notifying a function setting and a corresponding situation according to the result of the controller. The voltage / current / leakage current checking device (101, 102, 103) measures the current of each RST phase and displays it, and the vacuum breaker (VCB) state checking device (104) is normal / abnormal of the vacuum breaker (VCB). Indicate whether or not, the operation state checking device 105 of the motor informs the state (voltage / current abnormality) of the motor for the drain pump and other uses, the drainage level check device 106 is the water level of the drainage station Determine whether it is low or high. In addition, the temperature sensor 107 is to prepare for a fire risk to measure and notify the temperature of the local (equipment or place) dangerous area, it is preferable to use an infrared temperature sensor or thermistor. The rainfall specific sensor 108 may be installed in case of a rainy season or a typhoon occurs in a certain rain or more alarm, and can manage the rainfall of the substation in real time. The humidity sensor 109 also plays the same role.

When the initial power of the manned substation 10 is turned on, information obtained from the various external devices and sensors is transmitted to the controller 110. The microcomputer 1101 of the controller 110 receives the received information. Based on the self-diagnosis, the operation is performed. In this process, each phase voltage / current is measured and the load unbalance, phase difference, and power factor are calculated using the measured values. When each situation occurs, an active countermeasure is to perform on-site control of each of the plurality of motors 150 through the motor pump controller 1103 in the processing unit (MPU). The plurality of motors 150 are pumps for drainage purposes. The water level signal from each of the motors receives the water level signal from the arithmetic processing unit 1101 and calculates the measured value, and the drainage level is 4 to 20 mA. When the current is 4mA, and when the high water level is 20mA, the motor is operated / stopped by using one of the respective control devices according to the height of the water level. Thresholds in the sump level and other system specifications can be adjusted via the SETTING switch 130. In addition, based on the signal received from the operation processing unit (MPU), the speaker 160 for alarming whether or not the substation abnormality occurs by voice, the function setting or the corresponding situation of the plurality of motors 150 calculated / processed in the field An alarm device, such as a display part 170 for direct viewing, and an interface 180, which is a communication module for monitoring status on a PC, to inform the manager of the status of the substation. The interface is a communication module for monitoring various states of the plurality of motors in a PC, and preferably RS-232 to RS-485. In addition, by using the TEL MODEM (130) for the system abnormality can be dialed up to five places to notify the occurrence of the abnormality can be prepared for a variety of routes management system and emergency preparedness measures. .

Meanwhile, the manned substation includes a network modem 140 for real time communication with the unmanned substation 20, which is the greatest feature of the system according to the present invention. The manned substation 10 where the manager resides is an external device of the unmanned substation 20 by real time communication through Ethernet (WEB) between the manned substation 10 and the unmanned substation 20 while the manager directly manages the substation. And all information of the unmanned substation 20, such as information obtained from the environmental monitoring device and information related to the abnormality of the system, can be monitored and controlled.

The unmanned substation 20 of the system according to the present invention has a structure similar to that of the manned substation 10 described above, but does not reside in an administrator, so that an abnormal occurrence of the system sends an SMS or a voice message to the system, and the manned substation The network modem is connected to the controller separately for communication.

Referring to FIG. 1, the unmanned substation 20 includes a phase checking device 201, a phase checking device 202, a leakage checking device 203, and a vacuum breaker (VCB) state checking device 204. Information obtained from a fault detection device such as a motor operation state checking device 205 and a drainage level checking device 206 and an environmental monitoring device such as a temperature sensor 207, a rainfall measurement sensor 208, and a humidity sensor 209. Controller 210 for controlling the entire system and a plurality of motors 280 by receiving the operation, and the speaker 240, LCD display 250, the administrator to inform the function settings and the corresponding situation according to the results of the controller SMS device 260 for sending a text or voice and a network modem 230 for communication with a mandatory substation 10. The controller 210 includes a micro arithmetic unit (MPU) 2101 for receiving and calculating information about a state of a system and a motor pump controller 2103 for controlling a plurality of motors 280. Functions and relationships of each of the components of the unmanned substation have been described above in the manned substation, and thus will be omitted.

On the other hand, both the mandatory substation 10 and the unmanned substation 20 include VPS / CVCFs 190 and 260, which are voltage fluctuations, frequency fluctuations, instantaneous blackouts, transient voltages, etc. when using a general power supply or a backup power supply. It is an uninterruptible power supply to prevent power abnormality caused by power supply and to always supply stable power.

In general, an unmanned substation is a place where people do not stay resident. In this case, the vacuum breaker (VCB) should be turned on, and the motor should be stopped when the drainage water level is above a certain level (90%). The system according to the present invention, if a problem occurs in the system, such as a circuit breaker fault generator, a motor level level error, motor winding temperature error, motor bearing temperature error, voltage error, current error, etc. to the administrator using the SMS device 260 Voice or text message tells you this. Furthermore, since the unmanned substation 20 is capable of real-time communication with the manned substation 10 through the network modem 240 and is capable of managing and controlling the unmanned substation in the manned substation, when a person operates only a conventional unmanned substation, It can solve the problem that it is difficult to grasp the operation information of the substation normally because it does not reside. Visiting unmanned substations by real-time management and storage of various information (current, voltage, leakage current, temperature, vacuum breaker (VCB) status, motor status, drainage level, rainfall / temperature / humidity) This can be easily managed without checking it. In addition, since it is difficult to manage both substations in a manned substation with a monitor, the function of notifying an alarm text or voice through an SMS device of an unmanned substation solves the disadvantage that occurs when only a manned substation is operated. Integrated and unmanned substations can maximize convenience and efficiency.

2 is a view showing an embodiment of a graphic for notifying information of a system in the LCD display device of the system according to the first aspect of the present invention.

The alarm method of the system according to the present invention uses a monitoring method using a display device and a voice alarm method using a speaker. As shown in FIG. 2, in the LCD display apparatuses 170 and 250, all the information of the substation may be displayed in various graphics. FIG. 2 illustrates one example of the SSP. All information can be checked in real time and can be controlled. Through the menu located in the center of Figure 2 it is possible to check the overall state of the entire system obtained through the system failure check device and the environmental monitoring sensor, the information on the entire area corresponding to each menu through the menu on the right You can check the information by going to the S / S or SSP through the menu at the bottom. The environmental management button is in charge of the overall management of the management system, and the communication check button is for checking the communication status with each SSP. In S / S, you can control a motor at a remote location (SSP).

On the other hand, the alarm method using the voice is an alarm through the speaker 13 when a failure occurs, such as overload or when the set value is exceeded or less than the external input signal of the system. At this time, (1) Main VCB was cut off by voice. (2) The pump motor VCB is cut off. (3) No1 drainage level became more than 90%. (4) No2 drainage level became more than 90%. You can output it by

3 is a view showing the flow of operation of the integrated / unmanned substation integrated control method according to a second aspect of the present invention.

The algorithm as shown in FIG. 3 is based on the manned substation of the system according to the present invention, and the overall control process is performed. First, when the initial power is turned on, the CPU and the chip are initialized (S30), and it is determined whether or not the key is input (S31). At this time, if there is a key input, the system check is performed after processing the input key. If no key is input, the system check is performed immediately. The check on the system may be to check the voltage, current, phase, the image of the vacuum circuit breaker (VCB), or to check the operating state (water level, temperature) of the motor (S32, S33). The process (S30, S31, S32, S33) is carried out separately in an unmanned substation. The data according to the system check result is not only data of the manned substation itself, but also data according to the same process in the unmanned substation using Ethernet (WEB). Data on the system check made in the manned substation and the unmanned substation is calculated / processed by the processing unit (MPU) (S25), and the result is displayed on the display device made of the graphic LCD based on this, and the error is checked ( S34, S35). If an error signal is caught, it is first determined whether the cause is due to a communication problem with an unmanned substation. If there is no error signal or the abnormality is due to a communication failure, the communication unit returns to the initial state after requesting confirmation of the communication state (S36). , S37, S38). If it is recognized that the error signal of the system is irrelevant to the communication problem, a process (S39) is performed to determine whether there is an abnormality for each part of the system, such as the motor itself or the water level of the motor. Manage the entire system at one of the substations. In an unmanned substation, when an abnormality is detected separately, an overall system control and management is performed through a process of sending an alarm text or a voice to an administrator using an SMS device (S40).

In addition to these algorithms, the attendant substation allows the administrator to visit the unmanned substation periodically to check the system. In this case, all situation information is monitored daily and informed through the speaker, which maximizes the convenience and efficiency of management. Can be. The present invention is an artificial intelligence system in which manned substations and unmanned substations independently determine and act on their own, and operate in a complementary concept, thereby preventing the risk of power waste problems.

Although the above has been illustrated and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, but the gunshot in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Anyone of ordinary skill in the art can make various modifications as well as such modifications are within the scope of the claims.

In this way, the unmanned substation integrated management system according to the first aspect of the present invention and the unmanned substation integrated control method according to the second aspect are installed in an unmanned switchgear, automatic control panel, instrumentation control panel, etc. By real-time management and storage of information, the full-time worker waits for system management by automatically handling emergency relief by using remote communication in case of abnormality such as fire, equipment failure or motor operation problem, etc. While reducing man-hours, such as the need for workforce, there is an effect of maximizing the convenience and efficiency of substation management in the event that unforeseen operational failures such as natural disasters occur in unmanned substations. .

In addition, manned substations and unmanned substations automatically determine whether they are normal or abnormal by inputting various external signals such as a separate fault check device and environmental monitoring sensor. It can be regarded as an artificial intelligence system in terms of management and active control operation, and complementary concept is not operating at both substations at the same time, when one substation cannot control the system, the other substation By doing this, the system can be operated in real time and power consumption can be reduced.

Additional functions of the system according to the present invention include a self control function, an alarm function, a voltage / current measurement function, a fire detection function, a telephone notification function, a remote monitoring function, and the like to immediately recover a large accident by recovering an electric accident caused by an emergency failure. This system and control method can be applied in case of fire, prediction of fire or unauthorized intrusion.

Claims (13)

In the remote management system of the substation, A first failure detection device for detecting an abnormality of each device in the manned substation; A first environmental monitoring device for grasping environmental conditions inside / outside the manned toilet; A first controller for controlling the entire system through the first failure detection device and an environmental monitoring device; A first alarm device for notifying a function setting and a corresponding situation according to a result of the first controller; And a substation comprising an interface which is a communication module for monitoring the state of the entire system in a PC. A second failure detection device for detecting an abnormality of each device in an unmanned substation; A second environmental monitoring device for detecting environmental conditions inside / outside the unmanned substation; A second controller for controlling the entire system through the second fault detection device and an environmental monitoring device; A second alarm device for notifying a function setting and a corresponding situation according to the result of the second controller; And an unmanned substation including an SMS device for sending an alarm text or a voice when each situation occurs in the second controller. And And a unmanned substation integrated management system comprising a network modem to perform real-time communication through WEB in order to enable management and control of the unmanned substation in the manned substation. The method of claim 1, The first fault detection device and the second fault detection device include a phase check device for voltage / current, a leak current check device, a vacuum breaker (VCB) state check device, a motor operation state check device, and a drainage level check device. Unmanned substation integrated management system, characterized in that. The method of claim 1, The first environmental monitoring device and the second environmental monitoring device integrated temperature management system, unmanned substation, characterized in that it comprises a temperature sensor, rainfall measurement sensor, humidity sensor for preventing fire. The method of claim 1, The first controller and the second controller are motor pumps for controlling a plurality of motors and a processing unit (MPU) for calculating / processing based on the results obtained from the first and second fault detection devices and the environmental monitoring device. Unmanned substation integrated management system, characterized in that it comprises a control device, respectively. The method of claim 4, wherein The operation processing unit (MPU) checks the phase of voltage and current, checks the state of the vacuum circuit breaker (VCB), checks the operation state of the motor, and calculates and processes the data thereof. Substation Integrated Management System. The method of claim 4, wherein The motor pump control device controls the water level of the plurality of motors on-site according to the height of the water level while setting the range of the drainage level to 4-20 mA, and operates / stops each of the plurality of motors. Unmanned substation integrated management system. The method of claim 1, The first alarm device and the second alarm device is a display device for directly viewing the function setting or the corresponding situation according to the results of each of the first and second controllers in the field, a speaker device for audible alarm in the event of a system failure. Each unmanned substation integrated management system, characterized in that it comprises. The method of claim 1, And the network modem is installed in the manned substation and the unmanned substation, respectively, in order to perform real-time communication through WEB between the manned substation and the unmanned substation. The method of claim 1, The interface is a communication module for monitoring the various conditions of the plurality of motors in the PC, RS-232 to RS-485, characterized in that the integrated substation management system. In the substation alarm control method for operating a generation alarm to notify the administrator when a failure occurs in a plurality of motors or substation alarm system in the substation, Initializing the CPU and the chip by exchanging information of the substation through Ethernet (WEB) communication and turning on initial power of each of the manned substation and the unmanned substation each equipped with a network modem to enable uncontrolled management of the entire system; Determining whether the key is input in the manned substation and the unmanned substation and processing the system if there is a key input, and then checking the system; Calculating / processing data in each of the manned substations and the MPUs of the unmanned substations based on the result of the inspection of the system; Checking each of the mandatory substations and the unmanned substations for displaying the data on the system check in the form of a graph so that the user can check the data using an LCD and checking whether there is an error in the system based on the display; Checking whether the cause of the error is due to a communication failure between the manned substation and the unmanned substation, and returning to an initial state after a request for confirming a communication state when there is no error in the system or due to a communication failure; If there is no abnormality in the communication failure check result, it is determined whether the vacuum circuit breaker (VCB) abnormality, motor abnormality, and the motor level abnormality in the manned substation and unmanned substation sequentially, respectively, the initial state if the system is not abnormal Returning to; Judgment result of whether the vacuum breaker (VCB) is abnormal, whether or not a plurality of motors, the water level abnormality of the plurality of motors in the unattended substation leaves a text or voice message to the administrator through the SMS device, if there is no abnormality Returning to a state; And And an administrator controlling the respective motors after receiving a result of a partial abnormality determination at the manned substation or a system error message at the unmanned substation. The method of claim 10, Obtaining system-related information of the manned substation and the unmanned substation includes: a phase check device for voltage / current, a leak current check device, a vacuum breaker (VCB) state check device, a motor operation state check device, a drainage level check device, The integrated control method of the unmanned substation and the unmanned substation, characterized in that obtained by installing a temperature sensor, rainfall measurement sensor, humidity sensor for the prevention of fire to the outside of each of the manned substation and unmanned substation. The method of claim 10, The checking step for the system comprises a voltage, current, phase check, check the vacuum breaker (VCB) state or check the operation state (water level, temperature) of the motor, characterized in that the integrated substation control method. The method of claim 10, The manned substation includes a step of storing the system information of the unmanned substation or information related to the cause, reason, and subsequent management / control process of the error signal when the system error signal occurs. Control method.

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