Hiroshima, Japan
Hiroshima, Japan

The Chugoku Electric Power Company, Incorporated is an electric utility with its exclusive operational area of Chūgoku region of Japan. It is the sixth largest by electricity sales among Japan’s ten regional power utilities. It operates the Shimane Nuclear Power Plant.In 1982, Chugoku Electric Power Company proposed building a nuclear power plant near the island of Iwaishima, but many residents opposed the idea, and the island’s fishing cooperative voted overwhelmingly against the plans. In January 1983, almost 400 islanders staged a protest march, which was the first of more than 1,000 protests the islanders carried out. Since the Fukushima nuclear disaster in March 2011 there has been wider opposition to construction plans for the plant. Wikipedia.


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Included are a judging device configured to judge economic efficiency to be brought by charging and discharging of a storage battery based on a first sale price of electric power in a first time slot, a second sale price of the electric power in a second time slot, and charge/discharge efficiency of the storage battery, the first time slot being obtained by dividing a day into predetermined time periods, the second time slot being obtained by dividing the day into the predetermined time periods and being different from the first time slot; and a determining device configured to determine a charge/discharge plan of the storage battery in the first and the second time slots based on a judgment result of the judging device.


Patent
Chugoku Electric Power Co. | Date: 2016-02-03

An upstream fixing member (10) is connected to one end of a member to be ground which is formed of an NOx removal catalyst, the upstream fixing member including an expanded part which has a cross-sectional area larger than that of the member to be ground, and a downstream fixing member (20) is connected to the other end of the member to be ground, the downstream fixing member including a flow path which has a fixed cross-sectional area over a predetermined length from a member to be ground-fixing end thereof. A mixing part (40) for mixing an abrasive with a gas is connected to an upstream portion of the upstream fixing member, by the mediation of a connecting member including a flow path which has a cross-sectional area smaller than that of the expanded part, and a screen member having a predetermined sieve opening is disposed in the expanded part on the member-to-be-ground side. A classification part (70) and a dust-collecting part (80) are connected to the downstream fixing member on the connecting member side, the classification part being adapted to separate the abrasive which has passed through the through-hole of the member to be ground from a ground matter generated through grinding by the abrasive, and the dust-collecting part being adapted to absorb the gas in the mixing part via the classification part. The abrasive which has been mixed with the gas from the mixing part is transferred, through suction by means of the dust-collecting part, to the upstream fixing member, and the flow rate of the mixture of the gas and the abrasive is reduced in the expanded part, to thereby temporarily retain the mixture in the expanded part. Subsequently, the mixture is caused to pass through the through-hole of the NOx removal catalyst and the downstream fixing member, to thereby grind the inner wall of the through-hole, and then dust is collected by means of the dust-collecting part via the classification part.


A creep reinforcement material containing one or a plurality of elements selected from B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu, and Co is coated or thermally sprayed onto a surface of a heat-resistant metal member manufactured using a heat-resistant metal material, and a section coated or thermally sprayed with the creep reinforcement material is covered by a heat-resistant covering member and secured so as to contact the section. The heat-resistant metal member covered by the heat-resistant covering member is heated to a temperature of 1000C or greater, and thus compressive force accordingly acts on the heat-resistant metal member as it thermally expands in a direction toward the outer periphery, restraining thermal expansion of the heat-resistant metal member in the direction toward the outer periphery, and enabling the creep reinforcement material on the surface of the heat-resistant metal member to be efficiently diffused and permeated into the heat-resistant metal member.


Patent
Chugoku Electric Power Co. and Yamaguchi University | Date: 2016-02-03

The present invention is a plasma spraying apparatus (100a) including: a main torch (1) that includes a first electrode (3) having a spraying material discharge hole, a first mantle (4), and a first insulator (27) having a first plasma gas introducing port (5); and an auxiliary torch (2) that includes a second electrode (10), a second mantle (11), and a second insulator (28) having a second plasma gas introducing port (12). In this plasma spraying apparatus, a spraying material (20) supplied from the spraying material discharge hole is melted at the axial center of plasma (18) that is formed on the central axis of the first electrode (3) by the first electrode (3) and the second electrode (10), and a gas introducing part (4c) that introduces gas is provided on an inlet side of an opening part (4a) and/or in a tapered part (4b) provided between the opening part (4a) and the first insulator (27) in the first mantle (4). With this configuration, it is possible to prevent the spray material (20) from adhering to an inner wall of the opening part (4a).


Patent
Chugoku Electric Power Co. | Date: 2016-08-03

A heat-resistant metal member suffering from creep damage is covered by a heat-resistant covering member and secured so as to contact an outer periphery of the heat-resistant metal member, and the heat-resistant metal member covered by the heat-resistant covering member is heated to a temperature of 1000C or greater. A compressive force accordingly acts on the heat-resistant metal member undergoing thermal expansion toward the outer periphery, enabling efficient regenerative heat treatment to be performed on the heat-resistant metal member suffering from creep damage, while restraining thermal expansion in the direction toward the outer periphery of the heat-resistant metal member.


Patent
Chugoku Electric Power Co. | Date: 2016-02-03

To prevent more than necessary restrictions on the addition of a load connected to a power source device due to a priority set for the load when the power consumption of loads connected to the power source device varies. [Solution] When a total of power consumption by the loads connected to a power source supply device (3) decreases during a power outage, in the case of prioritized loads which have a priority set, loads to be additionally connected are identified in order of the priority, whereas when the total power consumption of the identified loads exceeds the upper output limit of the power source supply device (3), loads to be identified in order of priority are skipped and an attempt is made to identify a load with a lower priority. In the case of non-prioritized loads which do not have a priority set, the loads to be additionally connected are identified in ascending order of power consumption. When the total power consumption by the loads connected to the power source supply device (3) increases and exceeds the upper output limit of the power source supply device (3), the non-prioritized loads are disconnected in descending order of power consumption, while the prioritized loads are disconnected in ascending order of priority.


[Problem] To charge and discharge a storage battery to meet an economic benefit for a user. [Solution] A control device of a storage battery includes a first obtaining unit, a second obtaining unit, a first calculating unit, a second calculating unit, a third calculating unit, and a control unit. The first obtaining unit is configured to obtain first information indicative of an electricity price set for each time slot. The second obtaining unit is configured to obtain second information indicative of charge/discharge efficiencies of the storage battery. The first calculating unit is configured to calculate first electric energy charged in the storage battery. The second calculating unit is configured to calculate second electric energy of the storage battery dischargeable from the storage battery to a load, based on the first electric energy and the charge/discharge efficiencies. The third calculating unit is configured to calculate a unit charging price per unit electric energy required to charge the second electric energy based on the second electric energy, the electricity price in the time slot during which the storage battery is charged, the first electric energy, and the charge/discharge efficiencies. The control unit is configured to compare the electricity price with the unit charging price in each of the time slots. When the electricity price is lower than the unit charging price, the control unit is configured to cause an electric power system to charge the storage battery. When the electricity price is equal to or higher than the unit charging price, the control unit is configured to cause the storage battery to perform a discharge to the load.


Patent
Chugoku Electric Power Co. | Date: 2016-02-03

[Problem] To prevent a more than necessary limitation on the power supplied to a load at a power outage and the like due to a priority assigned the loads. [Solution] When a user turns on an on-off switch (16) so that a power supply device (3) is connected to a trunk line (12) in a switchboard (4) after a power source breaker (14) is opened in response to the detection of power outage, a personal computer (PC) (5) identifies from among loads (L1 - L8) a load to which power can be supplied within the range of output capacity of the power source supply device (3) and connects the load identified to the trunk line (12). A user can assign priorities to some or all of the loads (L1 - L8). Although the PC (5) identifies the loads to be connected in order of the priority, when a total power consumption of the identified loads exceeds the limit of output capacity of the power supply device (3), the PC (5) skips the load to be identified in order of the priority and attempts to identify a load with a lower priority. The PC (5) identifies the loads for which a priority is not set in ascending order of power consumption.


Patent
Chugoku Electric Power Co. | Date: 2016-11-30

A power control device including a first detection device that detects that a knob provided on a room interior side of a door has turned to a first turn position when the door is locked, and a cutoff device that cuts off power supply to an electrical device provided in the room interior when the first detection device has detected that the knob has turned to the first turn position.


Patent
Chugoku Electric Power Co. | Date: 2016-09-07

[Problem] To provide an exhaust heat recovery apparatus that effectively uses exhaust heat from an engine and ensures protecting the engine and its peripherals. [Solution] An exhaust heat recovery apparatus (1) of an engine includes an engine (71), a first cooler (3), a heat exchanger (2), and a first valve device (52). The first cooler (3) contains a first cooling medium to cool a first mechanism to be cooled of the engine (71). The first cooler (3) is configured to exchange heat between water at a first temperature output from a warm water utilization facility and the first cooling medium to output water at a second temperature higher than the first temperature. The heat exchanger (2) is configured to exchange heat between the water at the second temperature and exhaust gas from the engine to output water at a third temperature, higher than the second temperature, and supply the water at the third temperature to the warm water utilization facility. The first valve device (52) is configured to cause the water at the first temperature to be supplied to the heat exchanger (2) when a temperature of the first cooling medium is lower than a temperature on a side of the first cooler (3) to which the water at the first temperature is supplied.

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