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11. 发明专利

JP2005080475A Instantaneous lowering compensation system equipped with multiple-lightning measure function 审中-公开
标题翻译：具有多次亮度测量功能的瞬时降低补偿系统
公开(公告)号：JP2005080475A
公开(公告)日：2005-03-24
申请号：JP2003311124
申请日：2003-09-03
申请人： Tokyo Electric Power Co Inc:The , 東京電力株式会社
发明人： SAKAI SUKEYUKI , ABE MINORU , NAKAJIMA TATSUTO , ONO TAKAHIRO , TASHIRO YOICHIRO
IPC分类号： H02J9/06 , H02J3/32 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide an instantaneous lowering compensation system that can compensate instantaneous lowering and exert a sufficient instantaneous lowering countermeasure function, even if the instantaneous lowering is repeated a number of times in a short time when the instantaneous lowering occurs at a commercial power supply side (power feeding system), while exerting a load equalization function by rated driving at a normal time, and is less in the restraint of an instantaneous lowering compensation time caused by an output. SOLUTION: The instantaneous lowering compensation system 10 equipped with a multiple-lightning measure function is of a constant commercial power feeding type, and arranged at a customer system 1 that connects a commercial power supply 8 and a load 2 connected to the commercial power supply 8. The instantaneous lowering compensation system 10 comprises: a switch 41 that has a semiconductor as a constitution component, is inserted into the customer system 1 and connects or disconnects the commercial power supply 8 and the load 2; a power storable secondary battery 3 that serves both as a power feed source for the load equalization function and as a power feed source for the instantaneous lowering compensation function; an AC-DC converter 4 that is arranged between the secondary battery 3 and the customer system 1 and can perform charge and discharge; and a temperature monitor means 7 that purposes the effective utilization of an element constituting the AC-DC converter 4. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供即时降低补偿系统，其可以补偿瞬时降低并施加足够的瞬时降低对策功能，即使当瞬时下降发生在短时间内时，瞬时下降重复多次，商用电源侧（供电系统），同时通过在正常时刻通过额定驱动进行负载均衡功能，并且在由输出引起的瞬时降低补偿时间的限制下较少。
解决方案：具有多重雷电测量功能的瞬时降低补偿系统10具有恒定的商业供电类型，并且布置在连接商业电源8和连接到商业电源的负载2的客户系统1 电源8.瞬时降低补偿系统10包括：将具有半导体作为构成部件的开关41插入到客户系统1中，并连接或断开商用电源8和负载2; 用作负载均衡功能的供电源和用于瞬时降低补偿功能的供电源的可蓄电二次电池3; AC-DC转换器4，其配置在二次电池3与顾客系统1之间，能进行充放电; 以及用于有效利用构成AC-DC转换器4的元件的温度监视装置7.版权所有（C）2005，JPO＆NCIPI

12. 发明专利

JP2001327066A PROTECTIVE RELAY DEVICE WITH PHOTOCURRENT SENSOR 失效
公开(公告)号：JP2001327066A
公开(公告)日：2001-11-22
申请号：JP2000143823
申请日：2000-05-16
申请人： TAKAOKA ELECTRIC MFG CO LTD , TOKYO ELECTRIC POWER CO
发明人： ITO TAKABUMI , SO TOMOHIRO , SENDA YOSHIFUMI , YAMADA YASUHISA , TASHIRO YOICHIRO , KUROSAWA KIYOSHI , OGAWARA KENJI
IPC分类号： H02H3/02 , H02H3/28 , H02H3/30 , H02H7/26
摘要： PROBLEM TO BE SOLVED: To detect an external failure without making wrong decision as to its being an inner one as well the an inner failure, even for a failure current in which a DC factor is superimposed, in an electric current differential protection replay system with two photocurrent sensors mounted on the both ends of a protection zone of an electric power system. SOLUTION: A first photocurrent sensor 1 and a second photocurrent sensor 2 are mounted on both ends of a protection zone 9 of an electric power system, and I/O electric currents i1 and i2 to the protection zone are obtained respectively. A light source 11, the first photocurrent sensor 1, the second photocurrent sensor 2, a first light signal processing unit 4a, and a second light information part 4b are connected with fiber optics transmission paths 3a-3d. The effective value of a power frequency factor in difference current signal from a first light information part 4a is calculated by a difference current detection means 5a, and the effective value of a power frequency element in the harmony current signal from a second light information part 4b is detected by a harmony current detection means 5b respectively, and the difference thereof is obtained with a difference operation means 6. Even if the power frequency element in the difference current signal is not less than a relay set value, a judgment mean 7 judges it as being an external accident and prevents unnecessary operation of the relay, if the output of the difference operation means 6 is below a fixed value.

13. 发明专利

JP2002315180A CURRENT OPTICAL DIFFERENTIAL SYSTEM 失效
公开(公告)号：JP2002315180A
公开(公告)日：2002-10-25
申请号：JP2001109531
申请日：2001-04-09
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： TASHIRO YOICHIRO , KUROSAWA KIYOSHI , OGAWARA KENJI , MIURA SHOGO , HORI MASAO , TERAI KIYOHISA , SASAKI KINICHI
IPC分类号： G01R31/02 , G01R15/24 , G01R19/00 , H02H3/28
摘要： PROBLEM TO BE SOLVED: To solve the problem of a current optical differential system that a transmission line and a signal processing section isolated each other are required. SOLUTION: The current optical differential system comprises a plurality of photocurrent sensors 113, a transmission line 112 connecting them in series, and a signal processing section 115 for inputting light from a light source section 111 to the transmission line 112 and detecting a failure of an objective conductor based on the quantity of light detected by each sensor wherein the sensors fixed to respective conductors separated into three-phases are connected entirely in series such that the incident light from the light source is outputted as a sample quantity Ik based on the following formula thus detecting any fault in three-phases. Ik =(Ka1 Ia1 +Kb1 Ib1 +Kc1 Ic1 +K01 I01 )+(Ka2 Ia2 +Kb2 Ib2 +Kc2 Ic2 +K02 I02 )+...(Kan Ian +Kbn Ibn +Kcn Icn +K0n I0n ), where Ia(square) , Ib(square) , Ic(square) , I0(square) : a, b, c three-phase current values and zero-phase current value of (square)-th photocurrent sensor. Ka(square) , Kb(square) , Kc(square) , K0(square) : coefficients for a, b, c three-phase current values and zero-phase current value of (square)-th photocurrent sensor.

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