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1. 发明专利

JPH09191559A DIGITAL PROTECTIVE RELAY 失效
公开(公告)号：JPH09191559A
公开(公告)日：1997-07-22
申请号：JP227596
申请日：1996-01-10
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： YABE KUNIAKI , KODA JUN , MAEDA TAKAFUMI , YAMAKAWA HIROSHI , YAMAURA MITSURU , SATO CHIKAO , NAKANO SATOSHI , HORI MASAO
IPC分类号： G01R19/25 , H02H3/28 , H02H7/045
摘要： PROBLEM TO BE SOLVED: To provide a digital protective relay which is not actuated by an exciting inrush current but actuated by a failure such as one inside a transformer, even in a transformer of electric power system which contains harmonic current near the second harmonic in a current on an internal failure. SOLUTION: As an amount which represent a dispersion (flatness) of N instantaneous values im to im-( N-1) in a fixed section of a cycle of differential current calculated by placing elements with terminals to be protected in between and using each phase's alternating current, a deviation value is obtained by dividing by N the total value of the Nth power (x=1, 2,..., x) of the difference between each instantaneous value and the average value of N instantaneous values. Provided are a second examining means 21, 22, which examines whether or not the deviation value so obtained is equal to a fixed value or less to produce an output when it is equal to a fixed value or less, and an excited inrush current dealing element 23, which has a reset delaying means to delay the reset of the output of the second examining means 21, 22 for a given period of time. The output of the excited inrush current dealing element 23 prevents the output of a differential protective element 5.

2. 发明专利

JPH114533A DIGITAL PROTECTION RELAY 失效
公开(公告)号：JPH114533A
公开(公告)日：1999-01-06
申请号：JP17327097
申请日：1997-06-12
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： YABE KUNIAKI , KODA JUN , YAMAKAWA HIROSHI , YAMAURA MITSURU , NAKANO SATOSHI , SATO CHIKAO , HORI MASAO
IPC分类号： G01R19/04 , G01R19/165 , H02H3/28 , H02H7/045
摘要： 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.

3. 发明专利

JPH11341679A DIGITAL PROTECTIVE RELAY 失效
公开(公告)号：JPH11341679A
公开(公告)日：1999-12-10
申请号：JP15997298
申请日：1998-05-25
申请人： TOSHIBA CORP
发明人： NAKANO SATOSHI , SATO CHIKAO , YAMAURA MITSURU
IPC分类号： H02H7/045 , H02H3/28
摘要： PROBLEM TO BE SOLVED: To prevent a digital protective relay from malfunctioning as a differential relay, by blocking the output of its differential element through the output of its logical addition (OR) operation means. SOLUTION: When a magnetic flux exceeds its saturation level, a magnetic-flux judging portion 27 judges the behavior of the magnetic flux as an excitation rush current to give its output. Introducing this output into a reset delaying timer 28, its reset is delayed to introduce thereafter the output of the timer 28 into a logical multiply (AND) operator 29. From the AND operator 29, the logical multiply of the introduced output of a 2f judgement portion 18 by the output of the reset delaying timer 28 is outputted to introduce it into a logical addition (OR) operator 30. The OR operator 30 operates the OR operation of the outputs of the AND operator 29 and an AND operator 23 to output the result thereof. Inverting the output of the operator 30 by a NOT operator 24, the AND operation of the outputs of the operator 24 and a differential element 5 is performed in an AND operator 25 to block the output of the differential element 5 actuated by the excitation rush current. On the other hand, when the magnetic flux does not exceed its saturation level, the magnetic-flux judging portion 27 does not give its output, and the AND operation 25 associated with the output of a differential judgement 16 is performed to give the output of the differential judgement 16 actuated by the excitation rush current.

4. 发明专利

JPH10304559A DIGITAL-TYPE PROTECTION RELAY 失效
公开(公告)号：JPH10304559A
公开(公告)日：1998-11-13
申请号：JP12178697
申请日：1997-04-24
申请人： TOSHIBA CORP
发明人： YAMAURA MITSURU , SATO CHIKAO , NAKANO SATOSHI
IPC分类号： H02H3/02 , H02H7/045
摘要： PROBLEM TO BE SOLVED: To surely obtain a transformer protection relay which does not operate by an exciting inrush current, and surely operates at the time of a trouble. SOLUTION: A quantity I representing the magnitude of an amplitude value in a constant interval in one cycle of a differential current computed or a flatness in a constant interval in one cycle is calculated in a first current value computing unit 21, and n terminal voltages out of objects to be protected having a plurality of terminals are sampled at constant time intervals and converted into digital quantities. A quantity Vn representing the amplitude value of a terminal voltage is computed by a first voltage value computing unit 22 by using the converted digital quantity. A second judging unit 23 which outputs an output signal when the ratio of I computed by the first current value computing unit to Vn computed by the first voltage value computing unit is a specified value or more, or less to each is provided. A first exciting-inrush-current countermeasure element 61 composed of them and a return delay timer 24 of the second judging part output, and a means 20 which blocks the output of a differential protective element 5 with the output of the first exciting-inrush-current countermeasure element used as an inhibiting condition, are fitted.

5. 发明专利

JPH0993788A RATIO DIFFERENTIAL RELAY 失效
公开(公告)号：JPH0993788A
公开(公告)日：1997-04-04
申请号：JP26942495
申请日：1995-09-22
申请人： TOSHIBA SYST TECH KK , TOSHIBA CORP
发明人： NAKANO SATOSHI , SATO CHIKAO , SOFUE TETSUYA
IPC分类号： H02H3/28 , H02H7/06
摘要： PROBLEM TO BE SOLVED: To make small a fault current in an external fault at the distant end to prevent malfunction of a relay by providing a second arithmetic element which accumulates the combined amount of electricity under the conditions of the output of a first arithmetic element which operates when the combined amount of electricity exceeds the predetermined value and outputs a protection command when the accumulated amount of the electricity has exceeded the predetermined value. SOLUTION: A drive input is issued to an anti time-limit judging means 23 from a logical AND circuit 22 and thereby amount of operation |Id| is obtained in the anti time-limit judging means 23, while amount of suppression multiplied by k1 in the ratio calculating means 16 is obtained in an adding circuit 18 as the combined amount of electricity. Although accumulation of combined amount of electricity is performed, since this fault is an external fault, a fault is removed by the other relay before the accumulated value exceeds the predetermined value and malfunction of relay can be prevented.

6. 发明专利

JP2004241033A Wiring board, disk device, and method for identifying head ic 审中-公开
公开(公告)号：JP2004241033A
公开(公告)日：2004-08-26
申请号：JP2003028269
申请日：2003-02-05
申请人： Toshiba Corp , 株式会社東芝
发明人： NAKANO SATOSHI , KAWAI YASUMASA
IPC分类号： G11B33/12 , G11B5/48 , G11B21/02 , G11B25/04 , H05K1/02 , H05K1/11 , H05K1/18
CPC分类号： G11B5/486 , G11B5/4806 , H05K1/0266 , H05K1/0268 , H05K1/029 , H05K1/189 , H05K2201/10022 , H05K2201/10689
摘要： PROBLEM TO BE SOLVED: To provide a wiring board capable of easily and surely identifying a head IC in a simple structure, a disk device, and a method for identifying the head IC.
SOLUTION: An HDD has a spindle motor for supporting and rotating a magnetic disk, and a voice coil motor for swinging a suspension arm having a magnetic head mounted on its tip to move the magnetic head roughly in the radial direction of the magnetic disk and also has an FPC 20 having a head IC23 thereon. The FPC 20 is provided with a substrate main body 21 on which three chip resistors R1 to R3 and a connection pin P are mounted, and a flexible cable 22 having the head IC23 mounted on its tip. The probe of an inspection device is connected to the connector pin P, and the head IC23 is identified by measuring the impedances of the chip resistors R1 to R3.
COPYRIGHT: (C)2004,JPO&NCIPI

7. 发明专利

JPH11252781A DIGITAL TYPE PROTECTIVE RELAY 失效
公开(公告)号：JPH11252781A
公开(公告)日：1999-09-17
申请号：JP6769998
申请日：1998-03-04
申请人： TOSHIBA CORP , TOSHIBA SYST TECH
发明人： TANAKA KATSUYUKI , SATO CHIKAO , NAKANO SATOSHI , SOFUE TETSUYA
IPC分类号： H02H3/28
摘要： PROBLEM TO BE SOLVED: To prevent unnecessary operations of a differential relay in case of an external accident. SOLUTION: An overvoltage(OV) discriminating and calculating part 20, requiring immediate operation for a change in system voltage, with respect to an external trouble occurrence at a system power supply end, in a state with exciting rush current is flowing, conducts quicker operation and returns quicker than a differential factor. The output of the overvoltage(OV) discriminating and calculating part 20 is turned OFF, and the output of a return delay timer 24 controlled by the output of a differential discriminating and calculating part 16 is turned OFF after T2 hours. Through the return delay timer 24, the differential discriminating and calculating part 16 returns, the return delay timer 24 is reset (returned), and return cooperation with the differential factor is made positively, and reliability is improved.

8. 发明专利

JPH08138095A EXPRESSWAY TOLL COLLECTION SYSTEM 失效
公开(公告)号：JPH08138095A
公开(公告)日：1996-05-31
申请号：JP27650894
申请日：1994-11-10
申请人： TOSHIBA KYUSHU SYST KAIHATSU K , TOSHIBA CORP
发明人： NAKANO SATOSHI
IPC分类号： G06Q10/00 , G06Q30/04 , G06Q30/06 , G06Q50/00 , G06Q50/30 , G07B15/00 , G08G1/09 , G06F17/60
摘要： PURPOSE: To prevent a congested state according to toll collecting work from occurring by surely collecting the toll of an expressway from the driver of a vehicle without stopping the vehicle at a toll collecting spot. CONSTITUTION: The vehicle 12 of a driver not carrying a coupon ticket with use frequency among the vehicles 12 leaving from a toll road 9 to a general road 10 is guided to a route B side, and it is permitted to leave from a route F to the general road 10 after collecting the fee by a manned system, and also, the vehicle 12 of the driver carrying the coupon ticket with use frequency is guided to a route A side, and the vehicle 12 from which the toll can be collected is permitted to leave from routes C, E to the general road 10 after collecting the fee by an unmanned and non-stopping system, and also, at this time, when no toll could be collected, the vehicle 12 is guided to a route D, and it is permitted to leave form the route F to the general road 10 after collation of the toll by the manned system.

9. 发明专利

JPH06231325A ROAD MANAGEMENT SYSTEM 失效
公开(公告)号：JPH06231325A
公开(公告)日：1994-08-19
申请号：JP1383793
申请日：1993-01-29
申请人： TOSHIBA KYUSHU SYST KAIHATSU K , TOSHIBA CORP
发明人： NAKANO SATOSHI , SUZUKI KATSUNOBU , SHIMADA SHIGETO
IPC分类号： B65G61/00 , G06Q50/00 , G06Q50/30 , G07B15/00 , G06F15/21
摘要： PURPOSE:To indicate secure travel time to a road user, to improve a service content to the user and to apply a road management system to all toll roads where a prepaid card can be used. CONSTITUTION:When the prepaid card 8 is inserted into an entrance card processor 2 provided for the entering path 9 of the toll road 7, an entering number and entering time are stored for the prepaid card 8. When the prepaid card 8 is inserted into an exit card processor 5 provided for the leaving path 10 of the toll road 7, the entering number and entering time, which are stored in the prepaid card 8, are read and a data processor 4 operates travel time from the entering path 9 to the leaving path 10 based on a content which is read in the exit card processor 5 and leaving time and travel time is displayed by a travel time display board 6 provided for the entering path 9.

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