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91. 发明专利

JPH0421213B2 失效
公开(公告)号：JPH0421213B2
公开(公告)日：1992-04-09
申请号：JP13199381
申请日：1981-08-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： YANO MASAO , SUZUKI HIROSHI , MINE SETSURO , TAKEDA MASATOSHI
IPC分类号： G05F1/70 , H02J3/16 , H02J3/18
摘要： A method of static reactive power compensation is disclosed wherein the system voltage is compensated by supplying advanced-phase or retarded phase reactive power in dependence upon the difference between the system voltage and a reference voltage. The difference is formed by a comparator which receives a variable reference voltage from a filter containing a time lag circuit and which receives the system voltage as an input. For transients, the output of the filter does not change and thus reactive power is applied. For smooth variations, the output of the filter follows that of the system voltage so that the output of the power compensation circuit is maintained at zero.

92. 发明专利

JPH03103032A HIGHER HARMONIC SUPPRESSING SYSTEM 失效
公开(公告)号：JPH03103032A
公开(公告)日：1991-04-30
申请号：JP23983789
申请日：1989-09-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： TERADA MAKOTO , FURO ISAO , SUZUKI HIROSHI , IYODA ISAO
IPC分类号： H02J3/01 , H02M1/12
摘要： PURPOSE:To perform desired higher harmonic suppression reliably by regulating/ controlling the rate of higher harmonic component in a current flowing from the load side to the power system side while checking the conditions on the power system side and the load side. CONSTITUTION:A power supply 7 employing semiconductor elements, connected with a branch line 3 from a branch point 4, receives an output from a metering/ management control circuit 5A and feeds power to a corresponding load. A branch line load 8 is fed with power from the power supply 7 employing semiconductor elements. The metering/management circuit 5A measures the values of voltage and current, containing higher harmonic components, in the power system based on the outputs from a voltage detector 40 and current detectors 41, 42 and controls the power supply 7 as required. By such arrangement, higher harmonic component can considerably be reduced in the power system.

93. 发明专利

JPH0324130B2 失效
公开(公告)号：JPH0324130B2
公开(公告)日：1991-04-02
申请号：JP18383383
申请日：1983-09-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： TERADA MAKOTO , SUZUKI HIROSHI
IPC分类号： H02J3/00

94. 发明专利

JPH02206329A SYSTEM OF DECIDING VOLTAGE STABILITY OF ELECTRIC POWER SYSTEM 失效
公开(公告)号：JPH02206329A
公开(公告)日：1990-08-16
申请号：JP2081289
申请日：1989-02-01
申请人： MITSUBISHI ELECTRIC CORP
发明人： IBA KENJI , SUZUKI HIROSHI
IPC分类号： H02J3/00 , H02J3/24
摘要： PURPOSE:To decide voltage stability at high speed and with precision by either detecting a presumed value of multiple roots for power flow based on the output value of a power flow arithmetic means to decide a power flow solution or by inputting the presumed value of multiple roots for power flow into the power flow arithmetic means as an initial value. CONSTITUTION:In the operation of a power flow arithmetic means 1, for example in the power flow calculation process by an N-R method in a rectangular coordinate system multiple roots for power flow are presumed. Then, after the first solution is converged and the 1st power flow solution (the output value of the power flow arithmetic means 1) was decided, the presumed value of the multiple roots for power flow are certified. The 1st power flow solution is then decided as a power flow solution with the presumed value of multiple roots for power flow specified as an initial value, the power flow is calculated to decide the power flow solution.

95. 发明专利

JPH01133523A VOLTAGE REACTIVE-POWER CONTROLLING SYSTEM 失效
公开(公告)号：JPH01133523A
公开(公告)日：1989-05-25
申请号：JP29052987
申请日：1987-11-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： TERADA MAKOTO , SUZUKI HIROSHI
IPC分类号： H02J3/18 , G05F1/70
摘要： PURPOSE:To secure the stability of voltage to be kept and control voltage reactive-power properly, by contriving the generation of an abnormal state to be grasped on the terminal side as much as possible, and by coping with the abnormal state keeping pace with the control of the whole device. CONSTITUTION:A high tension power system 1 and a low tension power system 2 are connected to each other with a transformer bank 3. The voltage and power flow of the high tension power system 1, the voltage and power flow of the low tension power system 2, and voltage and power flow on the tertiary side of the transformer bank 3 are respectively detected, and the input to a monitoring controller is provided. Output signal processed by the monitoring controller is taken in a switchboard and an information transmitter, and a phase modifying equipment 4 connected to the transformer bank 3 is controlled.

96. 发明专利

JPS61256835A DISTRIBUTION LINE CARRING EQUIPMENT 失效
公开(公告)号：JPS61256835A
公开(公告)日：1986-11-14
申请号：JP9676685
申请日：1985-05-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： TERADA MAKOTO , SUZUKI HIROSHI , IYODA ISAO
IPC分类号： H04B3/54
摘要： PURPOSE:To attain communication with high quality by providing an impedance network between a distribution line at the side of a repeater station and ground and causing the series resonance state at communication so at to improve the quality of a signal current remarkably. CONSTITUTION:When a high frequency transmission signal is fed to ground from a transmitter 31 or 32 of a terminal station based on a data transmission request from the side of the repeater station, a signal current flows in a direction of the side of a pole transformer having a low impedance, that is, in a direction shown in dotted or full line arrow. Since an impedance ZN causes resonance with respect to the signal frequency and a low impedance is given, the flowing current flows to ground via the impedance network. In detecting the sending current by three CTs 5 provided to b, n, c phase lines, the sending current is increased much larger than that of the case lines, the sending current is increased much larger than that of the case without the insertion of the impedance network 6ZN. Thus, the sending current flowing to a receiver 4 is increased to improve the S/N.

97. 发明专利

JPS6126419A Breaker controller 失效
标题翻译：断路器控制器
公开(公告)号：JPS6126419A
公开(公告)日：1986-02-05
申请号：JP14676184
申请日：1984-07-17
申请人： Mitsubishi Electric Corp
发明人： SUZUKI HIROSHI
IPC分类号： H02H3/06

98. 发明专利

JPS60131033A TRANSMITTING APPARATUS 失效
公开(公告)号：JPS60131033A
公开(公告)日：1985-07-12
申请号：JP23761883
申请日：1983-12-16
申请人： TOKYO ELECTRIC POWER CO , MITSUBISHI ELECTRIC CORP
发明人： KAWAHIRA HIROYOSHI , YOROZUYA TSURUO , SHIZAKI YASUHIDE , YOKOUCHI KAZUHIRO , SUZUKI HIROSHI
IPC分类号： H02J3/06 , H02B1/24

99. 发明专利

JPS59136822A Voltage-reactive power control system 失效
标题翻译：电压反应动力控制系统
公开(公告)号：JPS59136822A
公开(公告)日：1984-08-06
申请号：JP1247183
申请日：1983-01-26
申请人： Mitsubishi Electric Corp
发明人： TERADA MAKOTO , SUZUKI HIROSHI
IPC分类号： G05F1/70 , H02J3/18
CPC分类号： G05F1/70
摘要： PURPOSE:To ensure the following even to the frequent actions carried out to the variation of the system conditions and the load by selecting a controller after deciding whether are deviation between the system voltage and the reactive voltage which is generated by the variation of the back voltage at the system side. CONSTITUTION:Both the system voltage and the reactive power of systems 1-3 are measured by a CPU76 via input signal converters 71-75 of a voltage-reactive power controller 7. The CPU76 identifies the initial value from said measured value as well as the system reactance from the initial value and its variation. Then the CPU76 decides whether the deviation between the system voltage and the reactive power which is due to the variation of the system back voltage satisfies a specific function relation decided by the prescribed system voltage, the blind sector width of the reactive power and reactance respectively. Based on this decision, the CPU76 selects a tap switch 41 or a breaker 51 for shunt reactor and a breaker 61 for static capacitor via output signal converters 77-79. These controllers are sequentially operated.
摘要翻译：目的：为了确定在决定系统电压与由反向电压的变化产生的无功电压之间的偏差之后，通过选择控制器来对系统状态和负载的变化进行的频繁动作进行确认在系统方面。构成：系统电压和系统1-3的无功功率由CPU76通过无功功率控制器7的输入信号转换器71-75测量.CPU76从所述测量值和系统电抗从初始值及其变化。然后，CPU76判定系统电压与系统反向电压的变化之间的无功功率之间的偏差是否满足规定的系统电压决定的特定功能关系，无功功率和电抗的盲扇区宽度。基于该决定，CPU76通过输出信号转换器77-79选择分接开关41或用于并联电抗器的断路器51和用于静电容器的断路器61。这些控制器依次运行。

100. 发明专利

JP2003149744A IMAGE DISPLAY SYSTEM 审中-公开
公开(公告)号：JP2003149744A
公开(公告)日：2003-05-21
申请号：JP2001345118
申请日：2001-11-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： SUZUKI HIROSHI , TERAMOTO KOHEI , SHIKAMA SHINSUKE , WADAKA SHUZO
IPC分类号： G02B27/18 , G03B21/00 , G03B21/10 , G03B21/28 , G03B21/62 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To solve the problem wherein the image display system has a limit of slimming in form and can not be made thinner. SOLUTION: The system is equipped with a transmitting means 10 comprising an illumination light source system composed of a light emission body 11, a parabolic mirror 12, and a condensing lens 13 and a light valve 14 which projects the light from the illumination light source while giving image information, a projection optical means 20 comprising a refracting optical lens 21 which projects the light from the transmitting means 10 and a convex mirror 22 reflecting, and enlarging and projecting the light from the refracting optical lens 21 by a reflecting surface having negative power, and a display means 30 which receives the light from the projection optical means 20 by a photodetection surface 30A and displays an image based upon the image information on an image display surface 30B; and the transmitting means 10 is arranged off the optical axis 23 of the projection optical means 20 and between the front surface of the display means 30 and the back surface of the projection optical means 20.

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