会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明专利
    • Method and device for measuring loss current by high-potential-side detection type-displacement current bypass method
    • 通过高电位检测类型位移电流旁路方法测量漏电流的方法和装置
    • JP2007256022A
    • 2007-10-04
    • JP2006079624
    • 2006-03-22
    • Institute Of National Colleges Of Technology JapanJ-Power Systems Corp株式会社ジェイ・パワーシステムズ独立行政法人国立高等専門学校機構
    • TOYAMA KAZUYUKIIMAI TOMOAKIMURATA YOSHINAO
    • G01R31/02
    • PROBLEM TO BE SOLVED: To provide a method and device for measuring loss current capable of converting a detection signal of the loss current into a waveform without distortion.
      SOLUTION: A sample 20 is connected to a secondary winding 2b of a voltage applying transformer 2 via a detection resistor 5, a secondary winding 3b of a voltage applying transformer 3 is connected to a low-potential end L via a bypass resistor 4, voltage v
      2 (-cosθ) is applied as a signal for removing displacement current component to a primary winding 3a of the voltage applying transformer 3 from a 2-channel signal transmitter 1, and voltage v
      1 of sinθ is applied as an applied voltage to a primary winding 2a of the voltage applying transformer 2. Thus, displacement current component flows through the bypass resistor 4, so that the detection signal only by the loss current is generated at both ends of the detection resistor 5. The detection signal is amplified by a differential amplifier 6, then converted into a light signal, and transmitted to a monitor 10. The monitor 10 observes the loss current waveform.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种用于测量能够将损耗电流的检测信号转换成波形而不失真的损耗电流的方法和装置。 解决方案:样品20经由检测电阻器5连接到电压变压器2的次级绕组2b,电压变压器3的次级绕组3b经由旁路电阻器连接到低电位端L 如图4所示,从2通道信号发送器1向电压施加变压器3的初级绕组3a除去位移电流成分的信号作为电压v SB2( - cosθ),电压v < 将sinθ的SB> 1 作为施加电压施加到施加电压变压器2的初级绕组2a。因此,位移电流分量流过旁路电阻器4,使得仅通过损耗电流的检测信号为 检测信号由差分放大器6放大,然后转换为光信号,并传输到监视器10.监视器10观察损耗电流波形。 版权所有(C)2008,JPO&INPIT
    • 2. 发明专利
    • Water tree deterioration diagnostic method for power cable
    • 电力电缆水树检测方法
    • JP2007139718A
    • 2007-06-07
    • JP2005337485
    • 2005-11-22
    • Institute Of National Colleges Of Technology JapanJ-Power Systems Corp株式会社ジェイ・パワーシステムズ独立行政法人国立高等専門学校機構
    • TOYAMA KAZUYUKIIMAI TOMOAKIMURATA YOSHINAO
    • G01R31/02
    • PROBLEM TO BE SOLVED: To provide a water tree deterioration diagnostic method for a power cable capable of determining simply and precisely whether the nonlinearity of a loss current waveform is caused by water tree deterioration or not, even when the loss current waveform is nonlinear.
      SOLUTION: A magnetic field generator 21 provided with a plurality of electromagnets 28 excited by a direct current power source part 22 is attached on a prescribed-positional outer surface of the power cable 1 incorporated with a cross-linked polyethylene insulator 13. A conductor 11 is electrified by a high-voltage generating part 23 to detect a loss current from a metal shielding layer 15, it is amplified by an amplifier 27 to observe the loss current waveform, and the water tree deterioration is diagnosed based thereon. The diagnosis carried out referring to the fact that the loss current waveform differs in response to the presence of magnetic field formation onto the power cable 1 due to the electromagnets 28.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了提供能够简单准确地确定损失电流波形的非线性是否由水树劣化引起的电力电缆的水树劣化诊断方法,即使当损耗电流波形为 非线性的。 解决方案:设置有由直流电源部22激励的多个电磁体28的磁场发生器21安装在与交联聚乙烯绝缘体13并入的电力电缆1的规定位置的外表面上。 导体11由高电压产生部件23通电以检测来自金属屏蔽层15的损耗电流,由放大器27放大以观察损耗电流波形,并基于此判断出水树劣化。 参考以下事实进行的诊断:损耗电流波形响应于由于电磁体28而在电力电缆1上的磁场形成的存在而不同。(C)2007,JPO和INPIT
    • 5. 发明专利
    • Insulating composition, wire/cable, and method for producing insulating composition
    • 绝缘组合物,电线/电缆以及制造绝缘组合物的方法
    • JP2006291022A
    • 2006-10-26
    • JP2005113077
    • 2005-04-11
    • J-Power Systems Corp株式会社ジェイ・パワーシステムズ
    • MURATA YOSHINAO
    • C08L23/04C08K3/00C08K9/06H01B7/02H01B9/00
    • PROBLEM TO BE SOLVED: To provide an insulating composition having a higher effect that can be obtained by adding an inorganic filler than conventional compositions, and to provide a wire/cable using the same and a method for producing the same.
      SOLUTION: The insulating composition of the present invention uses a low-density polyethylene as a material for a polyolefin resin and magnesium oxide which is surface-treated with a vinylsilane and then milled by jet milling. These components are kneaded through a twin-screw extruder so that the filler in the insulating composition has an average particle size of 200 nm or less to prepare an insulating composition. The resulting insulating composition has a higher volume resistivity and direct current breakdown strength than conventional insulating compositions.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供具有比常规组合物添加无机填料可获得的更高效果的绝缘组合物,并提供使用其的电线/电缆及其制造方法。 解决方案:本发明的绝缘组合物使用低密度聚乙烯作为用乙烯基硅烷表面处理的聚烯烃树脂和氧化镁的材料,然后通过喷射研磨进行研磨。 这些组分通过双螺杆挤出机捏合,使得绝缘组合物中的填料具有200nm或更小的平均粒径以制备绝缘组合物。 所得到的绝缘组合物具有比常规绝缘组合物更高的体积电阻率和直流击穿强度。 版权所有(C)2007,JPO&INPIT
    • 6. 发明专利
    • Insulation composite and electric wire/cable
    • 绝缘复合材料和电线/电缆
    • JP2007103247A
    • 2007-04-19
    • JP2005293932
    • 2005-10-06
    • J-Power Systems Corp株式会社ジェイ・パワーシステムズ
    • MURATA YOSHINAO
    • H01B3/44C08K3/00C08K9/00C08L23/00
    • H01B3/441C08K3/22C08K7/18C08K9/06C08L23/06
    • PROBLEM TO BE SOLVED: To provide an insulating composite and an electric wire/cable improving water tree resistance without deteriorating its electric characteristics. SOLUTION: A cable 1 has an a conductor 2 as a center with an internal conductive layer 3, an insulating body 4, external semi-conductive layer 5, a shielding layer 6 and a sheath 7 sequentially formed outside the conductor. The insulating body 4 is composed by using the insulating composite with inorganic filler which is non-conductive with nano size average particle diameter dispersed in polyolefin resin. Low density polyethylene (LDPE) is used as the polyolefin resin and MgO of nano size is used as the inorganic filler. By adding MgO of nano size, occurrence of water trees can be suppressed even when the cable is used in a wet atmosphere. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供绝缘复合材料和电线/电缆改善水树电阻而不劣化其电特性。 解决方案:电缆1具有导体2作为中心,其具有依次形成在导体外部的内部导电层3,绝缘体4,外部半导电层5,屏蔽层6和护套7。 绝缘体4通过使用具有分散在聚烯烃树脂中的纳米尺寸平均粒径不导电的无机填料的绝缘复合体构成。 使用低密度聚乙烯(LDPE)作为聚烯烃树脂,使用纳米尺寸的MgO作为无机填料。 通过添加纳米尺寸的MgO,即使在湿气氛中使用电缆,也可以抑制水树的发生。 版权所有(C)2007,JPO&INPIT