KR101218812B1 - The ground level monitoring device for main control system - Google Patents

Abstract

PURPOSE: A grounding level monitoring device for a main control system is provided to prevent malfunction of a main control system beforehand and to stably control power generating equipment in a power plant, thereby improving the robustness of power plant operation. CONSTITUTION: A grounding level monitoring device for a main control system(100) comprises a grounding line measuring unit, a control card output signal measuring unit, an abnormal state detecting unit, and a display unit. The grounding line measuring unit measures a voltage value and a current value of a grounding line. The control card output signal measuring unit measures an output signal of multiple control cards. The abnormal state detecting unit receives a reference voltage value from a user and receives the voltage value of the grounding line in the grounding line measuring unit. When the voltage value of the grounding line is higher than the reference voltage value, the abnormal state detecting unit outputs an alarm signal. The display unit receives a measured signal from the grounding line measuring unit and the control card output signal measuring unit and respectively displays the measured signal to the outside and receives the alarm signal from the abnormal state detecting unit and displays the alarm signal to the outside. [Reference numerals] (AA) Input power; (BB) External power measuring unit; (CC) Noise filtering unit; (DD) Power measuring unit; (EE) Internal power supply unit; (FF,GG,HH) Control card; (II) Input signal; (JJ,KK,MM) Output signal; (LL) Abnormal state detecting unit; (NN) User designation; (OO) Ground line measuring unit; (PP) Data storage unit; (QQ) Control card output signal measuring unit; (RR) Display unit

Description

Ground Level Monitoring Device for Main Controls {The Ground Level Monitoring Device for Main Control System}

The present invention relates to a main control equipment ground level monitoring device for monitoring the malfunction of the main control equipment for controlling the operation of the power generation equipment operating in the power plant, and more specifically, to the disturbance generated inside and outside the main control equipment. The ground line is provided to remove the abnormal current according to the ground in real time, and when the abnormal voltage value is measured higher than the normal operation of the main control equipment in the ground line, the user is notified of this, and the main control equipment It is possible to prevent the occurrence of the same abnormal condition again in advance by making it easy to analyze and eliminate the cause of the abnormal condition of the abnormal condition, and to prevent the more serious malfunction of the main control facility in advance. Power Plant Operation by Controlling Power Generation Equipment Stable at All Times It relates to the main plant ground-level monitoring device that can improve the castle.

In general, a plurality of power generation equipments are operated and operated for power generation, and power generation equipments used in ordinary thermal power plants include a boiler for generating high-temperature, high-pressure gas, and a high-temperature, high-pressure gas generated from the boiler as a working medium. And a turbine generator for generating power by rotating a turbine.

The boiler or turbine generator is configured and operated in a very large size for large capacity power generation, and accurate operation control is essential for safe power plant operation due to the danger of the operation medium circulating under ultra high temperature and high pressure to improve power generation efficiency. to be.

As such, the main control equipment is usually equipped to stably control the power generation equipment operating in a high risk driving environment, and the main control equipment is equipped with a plurality of electronic control cards for operating various power generation equipment in a desired state. do. The main control unit receives a number of operating variables such as temperature, pressure, flow rate, water level, or turbine rotational speed of the operating medium from the power generation equipment operating at the power generation site, and controls the control signals for maintaining the optimal power generation state. The card is output to each of the power generation equipment to control the operation.

The equipment installed in the main control equipment is composed of many electronic components including an electronic control card, and reacts sensitively to the surrounding environment. In particular, the measurement input signals coming from the power generation site are caused by disturbances generated inside and outside the main control equipment. The induced noise is mixed into the main controller to cause a malfunction in the electronic control card, and an abnormal operation control signal is input to the power generation equipment due to the malfunction of the electronic control card to damage the power generation equipment. Or stop the development, causing huge economic and social losses.

Therefore, in the related art, a maintenance worker or an operator directly measures supply voltages and currents of main parts of main control equipment with measuring equipment and checks whether they are abnormally operated. It often occurred during the inspection due to human error. In order to solve this problem, in recent years, a monitoring system that can monitor voltage and current values of main parts of main control equipment at a remote location by using a sensor has been developed, but also to check whether an abnormal condition of the main control equipment occurs. However, the internal parts of the main control equipment composed of hundreds of electronic components have to be monitored individually. Even if the abnormal condition of the main control equipment is known, the location or occurrence of the abnormal status due to various causes There is a problem that can not accurately determine the cause, and later abnormal conditions caused by the same cause can be repeated.

The present invention was derived to solve the above problems, and in addition to monitoring the occurrence of abnormal conditions of the main control equipment in remote locations in real time,

It is possible to reduce the manufacturing cost of the monitoring device by simplifying the configuration so that it is not necessary to monitor the operation status of all the electronic components constituting the main control equipment individually,

In addition, when an abnormal condition occurs in the main control equipment, after analyzing the location or cause of occurrence of the abnormal condition, it is possible to prevent the occurrence of the same abnormal condition again in advance by removing the cause of the abnormal condition. Malfunction of the facility can be prevented in advance so that the main control system can control the power generation equipment of the power plant stably.

In one aspect of the present invention for solving the above-mentioned problems, an internal power supply unit for receiving the external power to supply the operating power to each device mounted in the facility to control the operation of the power generation equipment of the power plant; To monitor the abnormal condition of the main control system, including a plurality of control cards to control the operation of a plurality of power generation equipment operated for power generation, and a ground line for removing the abnormal current generated inside and outside the facility to the ground. A main control equipment ground level monitoring device comprising: a ground line measuring unit for measuring a voltage value and a current value of the ground line; A control card output signal measuring unit measuring an output signal of each of the plurality of control cards; An abnormal state detection unit receiving a reference voltage value from a user and receiving a voltage value of the ground line from the ground line measuring unit and outputting an alarm signal when the voltage value of the ground line is higher than the reference voltage value; A data storage unit for receiving and storing a measurement signal from the ground line measuring unit and the control card output signal measuring unit; And a display unit configured to receive measurement signals from the ground line measuring unit and the control card output signal measuring unit, respectively, and display the measurement signals to the outside, and receive the alarm signal from the abnormal state detection unit and display the externally. It provides a main control equipment ground level monitoring device comprising a.

In the main control equipment ground level monitoring apparatus according to the present invention, the main control equipment further comprises a noise filtering unit for removing the noise of the external power input to the internal power supply unit, the voltage of each of the front and rear ends of the noise filtering unit External power measuring unit for measuring the value and the current value; And a power supply measuring unit configured to measure a voltage value and a current value of the supply power output from the internal power supply unit. The data storage unit may further include a measurement signal received from the external power measurement unit and a supply power measurement unit, and the display unit may receive a measurement signal from the external power measurement unit and a supply power measurement unit. Each can be marked as external,

Preferably, the ground line measuring unit, the control card output signal measuring unit, the external power measuring unit, and the supply power measuring unit may measure a voltage value and a current value at intervals of 40 to 60 μsec (micro second).

The main control equipment monitoring apparatus according to the present invention, in addition to the real-time monitoring of the abnormal state of the main control equipment in the remote place,

It is possible to monitor the disturbance or noise that may occur in the main control facility without monitoring the operation status of all the electronic components constituting the main control facility individually, and to manufacture and maintain the maintenance cost of the monitoring device. Can significantly lower costs,

In addition, when an abnormal condition occurs in the main control equipment, after analyzing the occurrence position or cause of the abnormal condition, it is easy to eliminate the cause of occurrence, and it is possible to prevent the same abnormal condition from occurring again in advance. It is possible to prevent the malfunction of the main control equipment in advance, so that the control equipment can control the power generation equipment of the power plant at all times.

1 is a block diagram showing a main control equipment ground level monitoring apparatus according to the present invention.

Hereinafter, embodiments of the present invention in which the above object can be specifically realized will be described with reference to the accompanying drawings. In describing the embodiments, the same names are denoted by the same reference numerals, and further description thereof will be omitted below.

1 is a block diagram showing the main control equipment ground level monitoring apparatus 100 according to the present invention, the main control equipment ground level monitoring apparatus 100 according to the present invention, as shown in FIG. A ground line measuring unit measuring voltage and current values of the ground line provided in 1), a control card output signal measuring unit measuring an output signal of each of a plurality of control cards mounted inside the main control facility 1; An abnormal state detection unit for outputting an alarm signal when the voltage value measured by the ground line measuring unit is higher than a predetermined reference voltage value, and receiving and storing the measurement signal from the ground line measuring unit and the control card output signal measuring unit; A display for receiving a signal from a data storage unit, the ground line measuring unit, the control card output signal measuring unit, and the abnormal state detecting unit, and displaying the signals externally. It is configured to include the chin.

It is electrically integrated with a plurality of grounding points formed at a predetermined position in the main control facility 1 to integrate disturbances generated inside the main control facility 1, lightning from the outside, surge signals, etc. A ground line is provided in the main control facility 1 so that the ground line can be removed to remove the ground line. The ground line measuring unit measures a voltage value and a current value that are energized by the ground line, as shown in FIG. 1. The measured value is output to the abnormal state detection unit, the data storage unit, and the display unit.

The abnormal state detection unit compares the reference value range in the normal operation state of the main control equipment 1 previously input from the user with the voltage value input from the ground line measuring unit, and determines that the abnormal state operation is out of the reference value range. And it is notified to the remote user through the display unit, the user detects the abnormal state through the alarm signal output from the abnormal state detection unit, and from the control card output signal measuring unit stored in the data storage unit at the moment of alarm signal output By analyzing the data value received from the ground line measuring unit, including the input data value, it is possible to identify and eliminate the cause and location of the abnormal condition.

Preferably, a noise filtering part is provided at an external power input terminal for supplying external power to the main control facility 1 to remove external disturbances that may be introduced through the input power, and to monitor whether the noise filtering part is operating normally. At the same time, in order to detect the disturbance flowing from an external power source, as shown in FIG. 1, an external power measurement unit may be provided to measure voltage and current values of the front and rear ends of the noise filtering unit. In order to detect the disturbance generated in the internal power supply, a power supply measuring unit may be provided to measure a voltage value and a current value of the supply power output from the internal power supply. The data storage unit and the display unit may receive and store measurement signals from the external power measurement unit and the supply power measurement unit, respectively, and display them externally.

In more detail, the operation of the main control equipment ground level monitoring apparatus 100 according to the present invention, in general, the main control equipment 1 is composed of hundreds of electronic control components, In the case where fine noise is generated due to various causes such as the induced voltage generated by the operation or the surge or disturbance caused by the on / off of the power generation equipment controlled by the main controller 1, the sensitive response Due to the characteristics of the control card, a malfunction signal is generated. The noise signal that causes the malfunction of the control card is difficult to measure due to the minute instantaneous characteristics. For precise measurement, the input / output signals of the respective electronic components constituting the main control facility 1 are generally measured. To measure in real time, measuring the input and output signals of all the electronic components in real time has a problem that is difficult to perform in practice due to the cost or space constraints of the measuring equipment.

In the present invention, it is connected to a plurality of grounding points in the main control facility (1) by integrating disturbances such as surge or induced voltage that can occur simultaneously in any position in the main control facility (1) to induce the ground to solve When the voltage value and current value of the ground line serving as a real time are monitored and the voltage value and current value and the disturbance signal are generated in the state in which the main control facility 1 operates normally, abnormal operation in the main control facility 1 is prevented. It is determined to be present and displayed as external. As described above, the present invention is to detect the abnormal state of the main control equipment 1 by the noise signal that can be generated simultaneously in all the electronic components in the main control equipment 1 even in a simple configuration without a plurality of measuring equipment. Through the ground line, the overall monitoring will be possible.

In addition, it is known that the main cause of the noise signal in the main control equipment 1 is noise in order to remove noise such as disturbance of the input power input to the internal power supply unit or to remove the disturbance of the input power as described above. Even when the filtering unit is provided, disturbance may not be eliminated due to a failure of the noise filtering unit, and disturbance due to surge generated during on / off operation of various power generation facilities controlled by the main control facility 1 is mainly used. have. In the present invention, when the abnormal state is monitored through the ground line measuring unit, the external power measuring unit, the supply power measuring unit, and the data storage unit in which the measured values of the output signals of the plurality of control cards are stored in real time The occurrence location or cause can be identified by whether the source of the disturbance is caused by the input power or by the operation of the power generation facilities, and by removing the identified cause of occurrence, the main control equipment (1) It can prevent the malfunction of, and prevent the more fatal failure caused by the accumulation of minute malfunction signal in advance.

Preferably, the ground line measuring unit, the control card output signal measuring unit, the external power measuring unit, and the power supply measuring unit is instantaneously generated by measuring the voltage value and the current value at intervals of 40 to 60 μsec (micro second) in real time. Even small disturbance signals can be measured.

In addition, although not shown, in addition to using the voltage value of the ground line mainly to determine whether the main control equipment (1) abnormal state, the external power measurement unit, the power supply measurement unit, or the control card output signal measurement unit After inputting each voltage value, current value, and output signal to the abnormal state detection unit, these voltage values are compared with the respective values in the normal operation state of the main control equipment 1 received from the user in advance. It is also possible to detect the abnormal state more accurately.

By the above-described configuration, the main control equipment ground level monitoring apparatus 100 according to the present invention can monitor whether or not an abnormal state of the main control equipment 1 occurs at a remote location in real time and constitutes the main control equipment 1. It is possible to monitor the disturbance or noise that may occur in the main control equipment (1) with a simple configuration that monitors the status of the ground line in real time without monitoring the operation status of all the electronic components individually. Significantly lower the manufacturing and maintenance costs of the device,

In addition, when it is determined that an abnormal state has occurred in the main controller 1 through the monitoring, after analyzing the occurrence position or cause of the abnormal state, the cause of the occurrence is easily removed, and the same abnormal state occurs again. Can be prevented in advance, the malfunction of the main control equipment (1) more fatal due to the accumulation of fine malfunctions can be prevented in advance, so that the main control equipment (1) can always stably control the power generation equipment of the power plant, It is possible to improve the reliability of safe power plant operation.

It is to be understood by those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope of the invention,

Accordingly, the above-described embodiments are to be considered illustrative and not restrictive, and all embodiments within the scope of the appended claims and their equivalents are intended to be included within the scope of the present invention.

1: main control equipment 100: main control equipment ground level monitoring device

Claims (3)

In order to control the operation of the power generation equipment of the power plant, an internal power supply unit that receives an external power supply to supply operating power to each device mounted inside the facility, and a plurality of controlling the operation of a plurality of power generation equipment operated for power generation In the main control equipment ground level monitoring device for monitoring the abnormal state of the main control equipment comprising a control card of the control unit, and a ground line for removing the abnormal current generated in the inside and outside the equipment to the ground,
A ground line measuring unit measuring a voltage value and a current value of the ground line;
A control card output signal measuring unit measuring an output signal of each of the plurality of control cards;
An abnormal state detection unit receiving a reference voltage value from a user and receiving a voltage value of the ground line from the ground line measuring unit and outputting an alarm signal when the voltage value of the ground line is higher than the reference voltage value;
A data storage unit for receiving and storing a measurement signal from the ground line measuring unit and the control card output signal measuring unit; And,
A display unit configured to receive measurement signals from the ground line measuring unit and the control card output signal measuring unit and to display the measurement signals to the outside, and to receive an alarm signal from the abnormal state detection unit and to display the external signals; Main control equipment ground level monitoring device, characterized in that comprising a.
The method of claim 1,
The main control unit is configured to further include a noise filtering unit for removing the noise of the external power input to the internal power supply,

An external power measurement unit measuring voltage and current values of front and rear ends of the noise filtering unit; And a power supply measuring unit configured to measure a voltage value and a current value of the supply power output from the internal power supply unit. It is configured to include more
The data storage unit receives and stores measurement signals from the external power measuring unit and the supply power measuring unit, and the display unit receives the measurement signals from the external power measuring unit and the supply power measuring unit and displays the externally, respectively. Main control equipment ground level monitoring device.
The method according to claim 1 or 2,
The ground line measuring unit, the control card output signal measuring unit, the external power measuring unit, and the power supply measuring unit, the main control equipment ground level, characterized in that for measuring the voltage value and the current value at intervals of 40 ~ 60 μsec (micro second) Surveillance device.

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