Abstract: An absorbent for separating acidic gases is disclosed. The absorbent or an absorbent composition for separating acidic gases has more than 3 kinds of compounds along with Chemical Formula 1 and 2, and has ability of rapid carbon dioxide elimination, excellent absorption ability, and less energy consumption for regenerating an absorbent due to easy desorption of carbon dioxide.

Abstract: The present invention provides a system and method for monitoring vibration of a power transformer. The system comprises at least one vibration sensor operably mounted to the outer case of a transformer for sensing vibration of the power transformer; a spectrum analyzer for processing the vibration signal from the vibration sensor, the spectrum analyzer generating a frequency spectrum of the vibration signal and calculating a velocity rating from the frequency spectrum; a diagnosing means for evaluating the velocity rating of the vibration signal, the diagnosing means assigning a vibration grade for each velocity rating, the diagnosing means finding the maximum velocity rating; and a means for dispatching a control message to an operator when the maximum velocity rating reaches a threshold value. It can be appreciated that the mechanical health of a large-sized transformer can be managed in a systematic and efficient manner during its operation.

Abstract: Provided is an optimized system voltage control method through coordinated control of reactive power source, which analyzes the location for reactive power compensation and the effect of applying compensation equipment by calculating the reactive power and voltage sensitivity of a power system, thus improving the voltage quality of the power system.

Abstract: Power meter based on a system-on-a-chip (SoC) is disclosed. The power meter provides all necessary functions related to power metering, power information processing and power information transmission on the basis of a system-on-a-chip enabling power meter functions to be mounted in a single chip in a manner that hardware resources can be recombined to implement hardware logics ensuring portability according to customer needs.

Abstract: Disclosed herein is a robot mechanism for inspection of a live-line suspension insulator string. A robot body of the robot mechanism reciprocates along the live-line suspension insulator string and includes upper and lower robot frames configured to encircle the insulator string, a battery module provided to either end of the robot body, an actuation module for moving the robot body along the insulator string, an inspection module for electrically inspecting an insulator, a connection module for coupling the robot body to an installation/dismantlement mechanism, a wing opening/closing module for manually separating the robot body from the insulator string, a measurement module for measuring electrical properties of the insulator, a controller for controlling operation of the robot body, and a crack detection unit for detecting cracks formed in the insulator.

Abstract: Disclosed herein is a replacement system of a distribution transformer and a low-voltage power line without outage. A distribution-line uninterruptible power supply includes a transformer primary bypass cable, a transformer secondary bypass cable, and a low-voltage power line bypass cable. Further, the uninterruptible power supply includes a combined phase-shifter and three-phase transformer, a transformer primary bypass switch, a transformer secondary bypass switch, a phase-based power adjuster, an energy converter, and a three-phase AC/DC converter. The capacity of the target transformer can be extended to one and half times that of the existing transformer. The energy conversion process of this system allows the utilization ratio of the transformer to be adjusted according to the phases, and has an advantage of extending the replaceable range at a low voltage without outage. Practical equipment can be secured at a low cost by replacing only the transformer in the existing uninterruptible power supply.

Abstract: The present invention relates to a simulation test system for thermal impact ageing of a power transmission insulator which simulation tests an influence of a forest fire on the power transmission insulator.

Abstract: Disclosed are a system and method with a cooperative control algorithm that can appraise voltage stability of a power system in cooperation with a supervisory control and data acquisition (SCADA)/emergency management system (EMS) for cooperative control on multiple parallel flexible alternating current transmission systems (FACTS) to enhance voltage stability, and that can calculate individual operation points of the FACTS.

Abstract: A load forecasting analysis system for calculating a customer baseline load (CBL). The load forecasting analysis system includes a CBL forecaster for receiving a load profile and providing a CBL forecasting method, a period selector for selecting conditions used to calculate the CBL using the load profile, a CBL processor for calculating a forecasting value by forecasting the CBL using the CBL forecasting method according to the load profile and the conditions, and a CBL determiner for calculating an error value by comparing the load profile with the forecasting value.

Abstract: Disclosed is a UHF partial discharge and its location measuring device for high-voltage power devices. The measuring device includes a partial discharge sensor, an external noise sensor, an analogue-digital converter, a peak detector, a partial discharge signal processor, an arrival time detector, a discharge location processor, and a display unit.

Abstract: A hydraulic drive type partial inter-tube lancing system for cleaning a steam generator in a nuclear power plant, which removes foreign matter, such as sludge, deposited around heat transfer tubes in the steam generator, is disclosed. More particularly, a hydraulic drive type partial inter-tube lancing system, which serves to clean a steam generator of a light-water reactor in a nuclear power plant by removing sludge, attached inside the steam generator, using high-pressure water, is disclosed.

Abstract: Disclosed is a power transmission tower, which includes a tower body; first through sixth main insulation arms connected by one end thereof to the tower body with an angle with the tower body, respectively, and arranged radially and symmetrically about the tower body in a longitudinal direction; and first through eighth auxiliary insulation arms for selectively connecting the other end of the first through sixth main insulation arms and the tower body so that each of the auxiliary insulation arms constitutes each side of an octagon. Since the insulation arms are octagonally arranged, it is possible to reinforce a mechanical strength and enhance electric properties of the tower.

Abstract: A penetration reinforcing agent for preventing aging of concrete is prepared by using an inorganic silicate compound having an ethoxy or methoxy group and a monomer having a hydroxyl (OH) group. When the penetration reinforcing agent is applied onto the surface of a concrete structure it penetrates the concrete structure where it is hydrolyzed by water existing within the concrete to form silica (SiO2) having a particle size of several nanometers, is gelled by a sol-gel process and reacts with concrete hydrates, so that internal pores of the concrete structure are compactly filled with the reaction products. The penetration reinforcing agent is effective in enhancing the strength of, inhibiting penetration of aging factors into, improving waterproofness of, and preventing neutralization of the concrete structure.

Abstract: Disclosed is a method and apparatus for rotating a heavy weight object by coincidence of centers of gravity. The apparatus includes a fixing frame unit to fix the weight object; a weight object rotating unit accommodating the weight object, including a rotatable semicircular frame, and connected to the fixing frame unit; a weight object/frame support unit formed under the semicircular frame to support the semicircular frame; and a motor/gear unit formed between the weight object rotating unit and the weight object/frame support unit to rotate the weight object rotating unit using bearings. The apparatus rotates the weight object even when the minimum force is applied to the weight object through the weight object rotating unit, has a minimized radius of rotation, and secures the safety, thus being applied to a production and assembly line in a narrow space to produce weight objects or a structural test building.

Abstract: An outer rotor superconductor journal bearing that comprising modules and including an outer rotor superconductor journal bearing that cools a superconductor that is mechanically fixed to a module below a critical temperature, attains a strong magnetic fixing force in an axial direction and a radial direction, prevents the superconductor from being damaged due to a different thermal expansion between the superconductor and a cryostat when cooled, and is easier for assembling and repair and maintenance. Preferably, the outer rotor superconductor journal bearing includes a rotor in which a solid of revolution magnet is magnetized in an axis direction in an inner portion of an inner circumference thereof; and a stator comprising a cryostat in the shape of a cylinder in which a superconductor that is tightly adhered to an inner circumference of the rotor is mounted in an outer circumference of the cryostat.

Abstract: In a nondestructive testing apparatus for testing normality of a blade root in a steam turbine installed in a nuclear plant or a thermal plant, an ultrasonic probe and an encoder can be mounted at the outside by only removing a casing of the steam turbine, without the necessity of withdrawing a turbine rotor, so that an automatic testing can be performed by rotating the steam turbine. Since the testing result can be digitally stored, reliability of the testing is improved. Furthermore, size of the testing apparatus is highly reduced for a tester to conveniently carry and install the testing apparatus alone. As a result, installation time and the whole testing time can be minimized.

Abstract: A system and method for operating a Unified Power Flow Controller (UPFC) connected to a SCADA (Supervisory Control and Data Acquisition) are disclosed. The UPFC automatic operation system receives power system data from the SCADA system, automatically determines UPFC's optimum operation conditions according to power system states. The system includes: a UPFC acting as a serial/parallel FACTS to control variables of a power system; a SCADA for periodically acquiring line data of the power system and state data of the UPFC; and an upper controller for analyzing data received from the SCADA, and determining an UPFC's optimum operation mode for each power system condition and UPFC's optimum set-point control commands.

Abstract: Disclosed is a face protector (100) configured to be rotated upward and downward while being coupled to coupling pieces (12) provided at opposite sides of a helmet (10), so as to protect the wearer's face. The face protector includes a body (120) for protecting the wearer's face, a pair of coupling units (140) configured to be fixedly coupled to both the coupling pieces of the safety helmet, respectively, and a plurality of links (160a,160b) used to connect the coupling units to opposite rear ends of the body, respectively, so as to restrict rotation of the body. The face protector has the effects of preventing the wearer's head from colliding with any object above the head in a narrow space, maximizing wearing convenience of the protector with a low wind-resistance and negligible weight-deflection, and guaranteeing easy and convenient use of the protector by preventing the protector from being unintentionally rotated downward by a weight thereof.

Abstract: A method of water absorption for a generator stator winding insulator using a cross capacitance involves detecting a state of the insulator of the stator winding of the generator using a theory of the cross capacitance, and carrying out the water absorption test of the insulator of the stator winding of the power generator using the detected state in the detecting.

Abstract: Provided is a method of regenerating a honeycomb type SCR catalyst which is used in selective catalytic reduction (SCR), comprising treating a waste honeycomb type SCR catalyst used in an industrial boiler with a mixed solution containing 0.1 M to 1.0 M H2SO4, 0.005 M to 0.1 M NH4VO3 and 0.005 M to 0.1 M 5(NH4)2O.12WO3.5H2O in an air lift loop reactor.