Electric Power Development Co.

Tokyo, Japan

Electric Power Development Co.

Tokyo, Japan
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Patent
Fujikura Ltd and Electric Power Development Co. | Date: 2016-12-05

The present invention provides a singularity locator that enables a singularity such as a fault to be located even in a near-end section. One embodiment of the present invention is a singularity locator (1) that locates a singularity by comparing a transmission wave with a reflected wave of the transmission wave reflected at the singularity at which impedance changes. The transmission wave is a frequency modulated continuous-wave (FMCW) with a continuously modulated frequency, and the singularity is located based on a difference in frequency between the transmission wave and the reflected wave.


Patent
Mitsubishi Group, Hokkaido Electric Power Co., Tohoku Electric Power Co., Tokyo Electric Power Company, Chubu Electric Power Co., Hokuriku Electrical Power Company, Kansai Electric Power Co., Chugoku Electric Power Co., Shikoku Electrical Power Co., Kyushu Electric Power, Electric Power Development Co., Japan Central Research Institute of Electric Power Industry and Clean Coal Power R&D Co. | Date: 2012-07-25

A slag monitoring device 100 for a coal gasifier includes a slag hole camera 11 that observes a slag hole 3 from which molten slag flows out, a water surface camera 12 that observes a situation in which the slag flowing out from the slag hole 3 falls onto a water surface 5H of cooling water 5, a falling sound sensor 13 that observes a sound of the slag falling onto the water surface 5H, and a processing device 20 that determines a solidification and adhesion position of the slag based on an opening area of the slag hole 3 observed by the slag hole camera 11 and falling lines and falling positions of the slag observed by the water surface camera.


Patent
Viscas Corporation, Electric Power Development Co. and Fujikura Ltd | Date: 2016-11-23

A method of connecting return conductors of power direct-current coaxial cables each including a main conductor at the center of the cable, a main insulating layer around the main conductor, and a return conductor that is formed by coaxially stranding a plurality of return-conductor wires around the main insulating layer includes forming a return-conductor wire bundle by placing a plurality of return-conductor wires next to each other for each of the power direct-current coaxial cables and welding return-conductor wire bundles of the power direct-current coaxial cables in a butt jointing manner.


Patent
Fujikura Ltd and Electric Power Development Co. | Date: 2014-09-03

The present invention provides a singularity locator that enables a singularity such as a fault to be located even in a near-end section. One embodiment of the present invention is a singularity locator (1) that locates a singularity by comparing a transmission wave with a reflected wave of the transmission wave reflected at the singularity at which impedance changes. The transmission wave is a frequency modulated continuous-wave (FMCW) with a continuously modulated frequency, and the singularity is located based on a difference in frequency between the transmission wave and the reflected wave.


Patent
Fujikura Ltd and Electric Power Development Co. | Date: 2016-06-08

The present invention provides a singularity locator that enables a singularity such as a fault to be located even in a near-end section. One embodiment of the present invention is a singularity locator (1) that locates a singularity by comparing a transmission wave with a reflected wave of the transmission wave reflected at the singularity at which impedance changes. The transmission wave is a frequency modulated continuous-wave (FMCW) with a continuously modulated frequency, and the singularity is located based on a difference in frequency between the transmission wave and the reflected wave.


Patent
Okazaki Manufacturing Company and Electric Power Development Co. | Date: 2012-03-02

The present invention relates to an in-furnace temperature measurement device 1 for a furnace in which gas is generated. The measurement device 1 includes: a support tube 3 which communicates with a measurement hole 2A which leads to an inside of the furnace; a sensor protection tube 4 inserted into the support tube 3 so as to be movable in an axial direction with a leading end, of the sensor protection tube 4, facing a furnace side; a plurality of seal rings 6A and 6B which hermetically seal a gap between the support tube 3 and the sensor protection tube 4 and which are arranged at an interval so as to divide the gap into a plurality of space portions in the axial direction; a temperature sensor 5 housed in the sensor protection tube 4 such that a temperature-sensing portion of the temperature sensor 5 corresponds to a leading-end portion of the sensor protection tube 4; and a drive mechanism 7 which drives the leading-end portion of the sensor protection tube 4 so as to be able to advance and retract in the axial direction with respect to the inside of the furnace through the measurement hole 2A, while maintaining a sealed state by the seal rings 6A and 6B.


Patent
Electric Power Development Co. | Date: 2016-10-19

The purpose of the present invention is to provide an algae culturing apparatus, in which photosynthetic algae capable of photosynthesis by absorbing light and incorporating carbon dioxide are cultured; and an algae culturing system with the algae culturing apparatus. The algae culturing apparatus (11) includes: a culture tank (31) configured to accommodate algae (14) and a culture solution (13) for culturing the algae (14); and a flow generator (33) installed on the culture tank (31), and configured to generate a flow of the culture solution (13) from a center of the culture tank (31) toward an inside wall part (31b) of the culture tank (31) on a liquid surface of the culture solution (13) and in a region of the culture solution close to the liquid surface by moving the culture solution (13) on the liquid surface and in the region close to the liquid surface in the culture tank (31) from the center of the culture tank (31) toward the inside wall part (31b) of the culture tank (31).


Patent
Electric Power Development Co. | Date: 2014-03-31

A thermal power plant has an exhaust gas system, a feed-water system, a high-pressure feed-water heater provided to the feed-water system, a main economizer, a catalytic NOx removal equipment, and a sub economizer. The main economizer is provided to the secondary side of the high-pressure feed-water heater of the feed-water system and increases the temperature of the feed-water by using the residual heat of the combustion gas from the boiler. The catalytic NOx removal equipment is provided to the secondary side of the main economizer of the exhaust gas system. The exhaust gas is supplied to the catalytic NOx removal equipment at a required temperature or higher. The sub economizer is provided between the high-pressure feed-water heater and the main economizer and increases the temperature of water by using the exhaust gas on the secondary side of the NOx removal equipment.


Patent
Electric Power Development Co. | Date: 2016-03-30

A thermal power plant 1 including: an exhaust gas system 11; a feed-water system 4; a high-pressure feed-water heater 10 provided to the feed-water system 4; the main economizer 36, which is provided to the secondary side of the high-pressure feed-water heater 10 of the feed-water system 4 and increases the temperature of the feed-water by using the residual heat of the combustion gas from the boiler 2; and a catalytic NOx removal equipment 14, which is provided to the secondary side of the main economizer 36 of the exhaust gas system 11 and the exhaust gas at a required temperature or higher is supplied to; and a sub economizer 40, which is provided between the high-pressure feed-water heater 10 and the main economizer 36 and increases the temperature of water by using the exhaust gas on the secondary side of the NOx removal equipment 14, is provided.


Patent
Electric Power Development Co. | Date: 2014-12-09

Photosynthetic algae capable of photosynthesis by absorbing light and incorporating carbon dioxide are cultured in an algae culturing apparatus. The algae culturing apparatus can be part of an algae culturing system. The algae culturing apparatus has a culture tank configured to accommodate algae and a culture solution for culturing the algae. A flow generator is installed on the culture tank and is configured to generate a flow of the culture solution from a center of the culture tank toward an inside wall part of the culture tank on a liquid surface of the culture solution and in a region of the culture solution close to the liquid surface by moving the culture solution on the liquid surface and in the region close to the liquid surface in the culture tank from the center of the culture tank toward the inside wall part of the culture tank.

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