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    • 2. 发明专利
    • System operation method using storage battery
    • 使用存储电池的系统操作方法
    • JP2012039686A
    • 2012-02-23
    • JP2010174988
    • 2010-08-04
    • Hitachi Ltd株式会社日立製作所
    • AIHARA TAKASHIINAGE SHINICHIWACHI ISAOWATANABE MASAHIRO
    • H02J3/38H02J3/32
    • H02J3/32H02J3/383H02J3/386H02J7/35Y02B10/14Y02E10/563Y02E10/566Y02E10/763Y02E70/30
    • PROBLEM TO BE SOLVED: To provide a system operation method using a storage battery, in which a storage battery for a house is used as a virtual storage battery of middle to large scale, to reduce a battery capacity that is required and efficiently absorb output fluctuation of a renewable energy.SOLUTION: The system operation method using a storage battery includes consumer electronics in a house that has a renewable energy, a storage battery 9 in individual house or that subjected to centralized control separately, and a control device 8 for measuring output fluctuation of the renewable energy and controlling the output fluctuation. The output fluctuation that depends on time, weather, and season related to the renewable energy is absorbed as much as possible by set temperature control of consumer electronics 11 in the house, and a remaining fluctuation is absorbed by charging/discharging with the storage battery 9, resulting in reduced electric energy storage capacity required for absorbing fluctuation.
    • 要解决的问题:为了提供一种使用蓄电池的系统操作方法,其中使用用于房屋的蓄电池作为大规模的虚拟蓄电池,以减少所需和有效的电池容量 吸收可再生能源的产出波动。 解决方案:使用蓄电池的系统操作方法包括具有可再生能源的房屋中的消费电子设备,单独的房屋中的蓄电池9或分别进行集中控制的控制装置8和用于测量输出波动的控制装置8 可再生能源和控制产出波动。 与可再生能源相关的时间,天气和季节的输出波动通过室内消费电子设备11的设定温度控制被尽可能地吸收,并且通过对蓄电池9的充电/放电来吸收剩余波动 ,导致吸收波动所需的电能储存能力降低。 版权所有(C)2012,JPO&INPIT
    • 3. 发明专利
    • Protective relay apparatus
    • 保护继电器
    • JP2003052121A
    • 2003-02-21
    • JP2001239203
    • 2001-08-07
    • Chubu Electric Power Co IncHitachi Ltd中部電力株式会社株式会社日立製作所
    • WACHI ISAONORO JUNKUMAGAI KAZUAKIABE TAKAHISAITO MASAHIRONAKANISHI JIRO
    • H02H3/28
    • PROBLEM TO BE SOLVED: To provide a protective relay which can surely cut off a transmission system, even if system failure occurs, when a zero-point transition current exists in the transmission system. SOLUTION: When an internal accident 13a occurs in a cable transmission line system 1a and a grounding occurs in a first phase among three phases, a '1' signal is outputted from an output terminal of a ratio differential relay; and if the signal is inputted to an AND gate via an OR gate, the connection of the logic product of the AND gate is satisfied, a W-phase and an R-phase are detected as normal phases, a line breaker of a failed phase is cut off, cut-off commands are issued to reactor breakers 10d of the normal phases, before the line breakers of the normal phases are cut off, and zero-phase transition currents generated in the line breakers of the normal phases are eliminated.
    • 要解决的问题:为了提供即使发生系统故障,当传输系统中存在零点转变电流时,也可以切断传输系统的保护继电器。 解决方案:当电缆传输线路系统1a发生内部事故13a并且在三相中的第一相中发生接地时,从比率差动继电器的输出端子输出'1'信号; 并且如果信号通过或门输入到与门,则与门的逻辑积的连接被满足,W相和R相被检测为正常相,故障相的断路器 在正常相的线路断路器被切断之前,断开指令被发送到正常相的反应堆断路器10d,并且消除了在正常相的线路断路器中产生的零相变电流。
    • 9. 发明专利
    • TRANSMISSION LINE PROTECTING RELAY
    • JPH10224978A
    • 1998-08-21
    • JP1818797
    • 1997-01-31
    • HITACHI LTD
    • KUMAGAI KAZUAKIWACHI ISAO
    • H02H3/28
    • PROBLEM TO BE SOLVED: To make it possible to compensate a charging current properly so as to prevent a transmission line protecting relay from malfunctioning even in a system having no lines PD, by controlling the transmission power of a transmission line compensating the charging current of the transmission line, using the bus-bar voltage of the transmission line. SOLUTION: A bus-bar voltage is taken in by voltage transformers 41, 42 connected to both ends of a transmission line, and a current flowing out from a capacitor component 24 being in the transmission line is calculated. When a fault occurs in the transmission line, protective devices 31, 32 calculate the vector sum of a current flowing from end A and a current flowing from end B, and judge that the transmission line is in the course of a fault unless IA-IB=0 is satisfied, and cut off circuit-breakers 22, 23. In this case, overcompensation and uncompensation are prevented by locking the complementary operation of a charging current by a voltage, and it becomes possible to prevent the malfunctioning and misunoperation of the protective relay for the transmission line.