专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2000074981A Method for measuring residual electric charge in diagnosing insulation of power cable 审中-公开
标题翻译：电力电缆诊断绝缘电阻测量方法
公开(公告)号：JP2000074981A
公开(公告)日：2000-03-14
申请号：JP24750098
申请日：1998-09-01
申请人： Chubu Electric Power Co Inc , Fujikura Ltd , 中部電力株式会社 , 株式会社フジクラ
发明人： KON HIROYUKI , YOSHIDA MANABU , WATANABE KAZUO , TODA TSUNEO , NARUSE MITSUTO
IPC分类号： G01R31/12
摘要： PROBLEM TO BE SOLVED: To make the charging facility scale reducible, make apparatuses of the facility simplifiable and particularly enhance the effectiveness as an insulation diagnosis method on a spot by impressing a damped oscillation voltage after impressing a d.c. or an impulse and measuring a residual electric charge.
SOLUTION: In measuring a residual electric charge when diagnosing water tree deterioration of a CV power cable or the like, for example, a test cable 1 is grounded after a d.c. is impressed thereto, and then a damped oscillation wave voltage is impressed from a damped oscillation wave voltage-generating apparatus 3 in a state with a residual electric charge-measuring apparatus 7 connected to the cable. Since the residual electric charge is not detected even when measured by impressing a predetermined a.c. after the damped oscillation wave voltage is impressed, it is confirmed that the residual electric charge is emitted by the damped oscillation wave voltage. The damped oscillation wave voltage can be generated, e.g. by charging a capacitor 4 and discharging via an inductance 5. An apparatus for generating the damped oscillation wave voltage can be small in facility scale and can be carried on a small truck or the like and therefore, the apparatus is appropriate for use on a spot.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：为了使充电设施可缩小，通过在施加直流电压之后施加阻尼的振荡电压，使设备的设备简化并且特别地提高作为绝缘诊断方法的有效性。或脉冲并测量剩余电荷。解决方案：在诊断CV电力电缆等的水树恶化时测量残留电荷，例如，测试电缆1在直流电源后接地。并且在与电缆连接的残留电荷测量装置7的状态下，从阻尼振荡波电压产生装置3施加阻尼振荡波电压。由于即使通过施加预定的交流电来测量剩余电荷，也没有检测到。在施加阻尼振荡波电压之后，确认通过阻尼振荡波电压发出残留电荷。可以产生阻尼的振荡波电压，例如通过对电容器4进行充电并通过电感5进行放电。用于产生阻尼振荡波电压的装置可以在设备规模上小，并且可以在小型卡车等上运载，因此该装置适合在现场使用。

2. 发明专利

JP2000074980A Method for diagnosing insulation deterioration of power cable 失效
标题翻译：用于诊断电力电缆绝缘测量的方法
公开(公告)号：JP2000074980A
公开(公告)日：2000-03-14
申请号：JP24749898
申请日：1998-09-01
申请人： Chubu Electric Power Co Inc , Fujikura Ltd , 中部電力株式会社 , 株式会社フジクラ
发明人： KON HIROYUKI , YOSHIDA MANABU , WATANABE KAZUO , TODA TSUNEO , NARUSE MITSUTO
IPC分类号： G01R31/12
摘要： PROBLEM TO BE SOLVED: To evaluate the water tree deterioration of a long cable by impressing an a.c. voltage of a predetermined pattern from a lower voltage to a higher voltage for a plurality of number of times, and using as an index as the ratio of a residual electric charge at a first time of the impression and a value after the impression of a predetermined number of times.
SOLUTION: In diagnosing the water tree deterioration of a CV power cable or the like, for example, a test cable is grounded after a d.c. is impressed thereto, and then a predetermined a.c. voltage Va is impressed as a first a.c. charging while a step-up time is set to, for instance, 60 sec.. A second charging is similarly carried out with a predetermined voltage Vb higher than the Va after charging in a predetermined pattern. A ratio Q2/Q1 of a quantity Q1 of residual electric charges measured at the first charging of the low voltage and a quantity Q2 of residual electric charges at the second charging of the high voltage increases in correspondence with a degree of water tree deterioration. A method of continuously impressing an a.c. of two levels as the a.c. current-charging and comparing measured values of residual electric charges of the levels is also carried out to obtain information on the deterioration in the longitudinal direction or the like.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：通过施加a.c.来评估长电缆的水树变质。将预定图案的电压从较低电压提高到较高电压多次，并且使用作为在印象的第一次的剩余电荷与预定的印象之后的值的比率作为指标次数。解决方案：在诊断CV电力电缆等的水树恶化时，例如，测试电缆在直流电源后接地。印象深刻，然后是预定的交流电压Va作为第一个交流电压。在升压时间设定为例如60秒的同时进行充电。以预定模式充电之后，以比Va高的预定电压Vb类似地执行第二充电。在低电压的第一次充电期间测量的剩余电荷的量Q1和高电压的第二次充电时的剩余电荷的量Q2的比率Q2 / Q1与水树劣化的程度相对应地增加。一种连续打印a.c.的方法。的两个层次作为a.c. 还进行电流充电和比较电平的残留电荷的测量值以获得关于纵向等的劣化的信息。

3. 发明专利

JP2000081459A DIAGNOSTIC METHOD FOR INSULATION DETERIORATION OF POWER CABLE 失效
公开(公告)号：JP2000081459A
公开(公告)日：2000-03-21
申请号：JP25273798
申请日：1998-09-07
申请人： FUJIKURA LTD , CHUBU ELECTRIC POWER
发明人： KON HIROYUKI , YOSHIDA MANABU , WATANABE KAZUO , TODA TSUNEO , NARUSE MITSUTO
IPC分类号： G01R31/12
摘要： PROBLEM TO BE SOLVED: To provide a method for use in the diagnosis of the insulation deterioration of a CV cable through the measurement of residual charge, capable of evaluating the degree of deterioration by detecting the area of deterioration caused by water trees in the longitudinal direction of the cable. SOLUTION: In this diagnostic method, when the insulation deterioration of a CV cable 1 is diagnosed by grounding the CV cable 1 after application of a dc voltage thereto, and measuring residual charge while applying an ac voltage thereto, heating is effected in the longitudinal direction of the cable and the residual charge measurement is taken to specify the area of the insulation deterioration.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式