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    • 2. 发明专利
    • DIGITAL PROTECTION RELAY
    • JPH114533A
    • 1999-01-06
    • JP17327097
    • 1997-06-12
    • TOKYO ELECTRIC POWER COTOSHIBA CORP
    • YABE KUNIAKIKODA JUNYAMAKAWA HIROSHIYAMAURA MITSURUNAKANO SATOSHISATO CHIKAOHORI MASAO
    • G01R19/04G01R19/165H02H3/28H02H7/045
    • PROBLEM TO BE SOLVED: To obtain a digital protection relay functioning surely in response to a failure in a transformer by blocking the output from a differential protection element using the output from an excitation inrush current countermeasure element having means for delaying the reset of the output from a decision means by a specified time thereby preventing the differential protection element surely from acting with the excitation inrush current of the transformer. SOLUTION: A differential relay 1 comprises an amplitude operating section 21, a flatness deciding section 22, a reset delay timer 23 and an excitation inrush current countermeasure element 61. A differential current Id operated at the differential current operating section 14 of a differential element 5 is introduced to the excitation inrush current countermeasure element 61 and the amplitude J is determined at the amplitude operating section 21 by performing an operation for detecting the amplitude. When it is lower than a specified value k, the flatness deciding section 22 produces an output. On the other hand, output from the reset delay timer 23 is inverted through a NOT operating circuit 19 and ANDed, through an SND circuit 20, with an output from the differential element 5 in order to block the output from the differential element 5 operating with an excitation inrush current thus preventing erroneous action of the differential relay 1.
    • 5. 发明专利
    • Information processing method and computer system for power generation planning
    • 用于发电规划的信息处理方法和计算机系统
    • JP2005056103A
    • 2005-03-03
    • JP2003285666
    • 2003-08-04
    • Tokyo Electric Power Co Inc:The東京電力株式会社
    • YABE KUNIAKIHAIDA TAKESHI
    • G06F19/00G06Q10/04G06Q50/00G06Q50/06H02J3/00G06F17/60
    • Y02A30/12
    • PROBLEM TO BE SOLVED: To attain the simulation of a power generation planning which is closer to reality. SOLUTION: Weather condition data in specific time specified with unit time intervals in a future specific year are generated under the consideration of the continuity of the unit time intervals, and business activity condition data in the future specific year are generated, and data regarding a prediction expression to calculate power demand are acquired from at least the weather conditions and the business activity conditions in accordance with the specific time specified with the unit time intervals in the future specific year, and power demand data in the specific time in the future specific year are generated by using the acquired data regarding the prediction expression. The weather condition data are generated not based on probability distribution simply acquired from the past results, but under the consideration of the continuity of the unit time intervals. Consequently, more actual data can be generated and more actual power demand is therefore predicted. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:实现更接近现实的发电规划的模拟。

      解决方案:考虑到单位时间间隔的连续性,生成未来具体年份单位时间间隔指定的特定时间的天气条件数据,生成未来特定年份的业务活动条件数据,数据 关于计算功率需求的预测表达式,根据未来特定年份中的单位时间间隔指定的具体时间,以及将来的特定时间内的电力需求数据,从至少天气条件和营业活动条件获取 通过使用关于预测表达式的获取的数据来生成特定年份。 气象条件数据不是基于从过去的结果简单地获得的概率分布,而是考虑单位时间间隔的连续性。 因此,可以产生更多的实际数据,从而预测更多的实际功率需求。 版权所有(C)2005,JPO&NCIPI

    • 7. 发明专利
    • PROTECTIVE METHOD FOR TRANSFORMER
    • JPH0946890A
    • 1997-02-14
    • JP21673795
    • 1995-08-01
    • TOKYO ELECTRIC POWER CO
    • YABE KUNIAKIKODA JUN
    • H02H7/045
    • PROBLEM TO BE SOLVED: To discriminate a failure current and an excitation rush current clearly regardless of power system constitution, by judging an inner defect when a difference from a magnetization curve calculated from characteristics of a transformer core and physical characteristics of a circuit is over a given level. SOLUTION: Whether an absolute value |I| of an instantaneous sample value as the sum of current to each winding is over 30% of a rating current 10 or not is detected. (S1) Namely, whether a difference current is over 30% or not is detected. When the difference current over 30% of the rating current is carried (S1) and the difference current |I| is over 300% of the rating current 10 (too large as an in-rush current) or a secondary harmonic factor is 15% or below of a fundamental wave, an inner failure is judged and the detecting steps are finished. (S2) In this way, a failure current and an excitation rush current can be discriminated clearly, regardless of power system constitution.
    • 8. 发明专利
    • PROTECTION RELAY FOR TRANSFORMER
    • JPH07193987A
    • 1995-07-28
    • JP33154893
    • 1993-12-27
    • TOKYO ELECTRIC POWER CO
    • YABE KUNIAKI
    • H02H7/04H02H7/00H02H7/045
    • PURPOSE:To discriminate between the internal failure and the normal state of a transformer by making a decision that the transformer has failed internally when the integrated difference between the flow-in power and copper loss exceeds a threshold value and delivering a command for interrupting the circuit connected externally. CONSTITUTION:When the primary winding of a transformer 1 is connected through a circuit breaker 2 with a primary bus 3 and the secondary winding thereof is connected through a circuit breaker 4 with a secondary bus 5, a transformer protection relay 6 takes in the primary current of the transformer 1, the voltage of the primary bus 3, i.e. the primary voltage, the secondary current of the transformer 1, and the voltage of the secondary bus 5, i.e., the secondary voltage. The transformer protection relay 6 decides the internal fault of the transformer 1 based on these values and delivers interruption commands to the circuit breakers 2, 4. This constitution allows to decide presence of damage energy consumption due to internal fault of the transformer 1 regardless of the characteristics of a power system connected with the transformer 1.
    • 9. 发明专利
    • Device and method for calculation of greenhouse gas discharge amount, and charge system
    • 用于计算温室气​​体排放量和充电系统的装置和方法
    • JP2010239704A
    • 2010-10-21
    • JP2009083139
    • 2009-03-30
    • Tokyo Electric Power Co Inc:The東京電力株式会社
    • YABE KUNIAKIAKAISHIZAWA FUSAMITSUKURUMADA HIROKATAENDO YASUYUKIYAMASHITA KEI
    • B60L8/00B60L3/00B60L11/18G06Q50/00G06Q50/06
    • Y02T10/7005Y02T10/7083Y02T10/7241Y02T90/121
    • PROBLEM TO BE SOLVED: To provide a technique for calculating an amount of discharge of greenhouse gas corresponding to origins of electric power to be charged for managing it in user units. SOLUTION: A greenhouse gas discharge amount calculation device is connected to a charging apparatus for charging a vehicle using electric power, and calculates an amount of discharge in greenhouse gas generated when generating a charge power for charging the vehicle. The greenhouse gas discharge amount calculation device includes: an acquisition unit for acquiring detailed information relating to an electric energy of natural energy, namely electric energy of natural energy power, and a system electric energy, namely electric energy of system power included in charge power; a calculation unit for calculating the amount of discharge in greenhouse gas of the system power based on predetermined greenhouse gas discharge original unit information and calculating the amount of discharge in greenhouse gas when generating a charge power based on the amount of discharge in greenhouse gas of the calculated system power and the detailed information; and a recording unit for recording the amount of discharge in greenhouse gas when generating the charge power calculated by the calculation unit for each user utilizing the charge power. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于计算用于以用户单位管理的用于计费要收取的电力来源的温室气体的排出量的技术。 解决方案:温室气体排出量计算装置连接到使用电力对车辆充电的充电装置,并计算当产生用于对车辆充电的充电电力时产生的温室气体中的放电量。 温室气体排出量计算装置包括:获取单元,用于获取与自然能量的电能相关的详细信息,即自然能量电力的能量,以及系统电能,即包括充电功​​率的系统功率的电能; 计算单元,用于基于预定的温室气体排出原始单元信息计算系统功率的温室气体排放量,并且基于温室气体中的排放量产生充电电力时计算温室气​​体中的排放量 计算系统功率和详细信息; 以及记录单元,用于当利用所述充电功率为每个用户生成由所述计算单元计算的充电功率时,记录温室气体中的放电量。 版权所有(C)2011,JPO&INPIT
    • 10. 发明专利
    • Power supply system, and device for control of distributed power plant
    • 电源系统和用于控制分布式发电厂的装置
    • JP2010233352A
    • 2010-10-14
    • JP2009078107
    • 2009-03-27
    • Tokyo Electric Power Co Inc:The東京電力株式会社
    • YABE KUNIAKIAKAISHIZAWA FUSAMITSUKURUMADA HIROKATAENDO YASUYUKIYAMASHITA KEI
    • H02J3/00H02J3/46
    • PROBLEM TO BE SOLVED: To avoid adverse effects on a power system due to a reverse power flow in the power system having a distributed power plant at a power consumption point. SOLUTION: A power supply system includes an estimation unit for estimating a power consumption amount at a power consumption point and a power generation amount generated by a distributed power plant installed at the power consumption point based on weather information at the power consumption point in a predetermined future period, a voltage distribution estimating unit estimating a voltage distribution in the power system based on the power consumption amount and the power generation amount by the distributed power plant at the power consumption point estimated by the estimation unit, and a supply determination unit determining whether power supply to the power consumption point can be normally performed in the predetermined future period based on the voltage distribution estimated by the voltage distribution estimating unit. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了避免在功率消耗点具有分布式发电厂的电力系统中的逆向功率流对电力系统的不利影响。 电源系统包括:估计单元,用于基于电力消耗点处的天气信息来估计功耗点处的功耗量和由安装在电力消耗点的分布式发电厂产生的发电量 在预定的未来时段中,电压分布估计单元基于由所述分布式发电厂在由所述估计单元估计的功耗点处的功耗量和发电量来估计所述电力系统中的电压分布,以及供给确定 基于由电压分布估计单元估计出的电压分布,确定能否在预定的未来时段内正常地执行对功耗点的供电的单元。 版权所有(C)2011,JPO&INPIT