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1. 发明专利

JP2003009542A Battery power storage system and initial charging method therefor 审中-公开
标题翻译：电池储能系统及其初始充电方法
公开(公告)号：JP2003009542A
公开(公告)日：2003-01-10
申请号：JP2001193278
申请日：2001-06-26
申请人： Kansai Electric Power Co Inc:The , Nissin Electric Co Ltd , 日新電機株式会社 , 関西電力株式会社
发明人： TOKUDA NOBUYUKI , KIKUOKA YASUHEI , KAWAKATSU TAKESHI , KAWAKAMI NORIKAZU
IPC分类号： H01M10/44 , H02M7/48
CPC分类号： Y02E60/12
摘要： PROBLEM TO BE SOLVED: To provide a battery power storage system wherein power conversion efficiency is enhanced and the cost is reduced without separately installing a dedicated initial charger.
SOLUTION: In the battery power storage system, a power converter 4 can be connected to a system power supply 1 through a transformer 3 for linkage, and an electrolyte circulating secondary battery 6 which requires initial charging from 0 V of battery voltage can be connected to the direct current side of the power converter 4 through an electrolytic capacitor 15. The direct-current voltage of the electrolytic capacitor 15 is established at rectified voltage by the rectifying operation of the power converter 4, and further the electrolyte circulating secondary battery 6 is connected to the direct current side of the power converter 4. The battery power storage system is provided with a control circuit 16 which initially charges the electrolyte circulating secondary battery 6 under such control that the modulation factor of the power converter 4 is fixed at a value not more than 1, and the phase difference between the output voltage of the power converter 4 and the system voltage is fixed at a value not more than the rated power of the power converter 4.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种其中电力转换效率提高并且成本降低而不单独安装专用初始充电器的蓄电池蓄电系统。解决方案：在蓄电池蓄电系统中，电力转换器4可以通过变压器3连接到系统电源1进行连接，并且可以将需要从0V电池电压初始充电的电解液循环二次电池6连接到电力转换器4的直流侧通过电解电容器15通过电力转换器4的整流运行而建立在整流电压下的电解电容器15的直流电压，并且进一步连接电解液循环二次电池6 到电力转换器4的直流侧。电池蓄电系统设置有控制电路16，该控制电路16在电力转换器4的调制系数固定为不是值的情况下，首先对电解液循环二次电池6进行充电大于1，并且功率转换器4的输出电压与系统电压之间的相位差是固定的 d不大于功率转换器4的额定功率。

2. 发明专利

JP2001298871A BATTERY POWER STORAGE SYSTEM 失效
公开(公告)号：JP2001298871A
公开(公告)日：2001-10-26
申请号：JP2000111116
申请日：2000-04-12
申请人： KANSAI ELECTRIC POWER CO , NISSIN ELECTRIC CO LTD
发明人： TOKUDA NOBUYUKI , KIKUOKA YASUHEI , TADA TOMOSHI , KAWAKATSU TAKESHI
IPC分类号： H02J7/34 , H01M10/44 , H02J3/32
摘要： PROBLEM TO BE SOLVED: To achieve the rise of accuracy and the reduction of cost by the improvement of frequency property of a battery power storage system which charges and discharges a secondary battery with a hybrid system of power converter. SOLUTION: This is a battery power storage system which charges and discharges an electrolyte circulation type of secondary battery 1 with a hybrid system of power converter 2, where a small-capacity high frequency PWM inverter 5 and a large-capacity rectangular wave inverter 7 are connected multiply to a power system. The total DC voltage Vb of a minority of optional single cells 1a' out of a plurality of single cells 1a constituting a secondary battery 1 such as a redox flow battery or the like is applied to the DC side of the small-capacity high frequency PWM inverter 5, and the DC voltage Va of all single cells 1a,... is applied as rated secondary battery voltage to the DC side of a large-capacity rectangular wave inverter 7. The rated voltages of the switching elements of several inverters 5 and 7 are varied, corresponding to Va>Vb.

3. 发明专利

JPH07167907A SPOTTING METHOD FOR ACCIDENT SUCH AS LIGHTNING STRIKE ON RAILWAY, ETC. 失效
公开(公告)号：JPH07167907A
公开(公告)日：1995-07-04
申请号：JP31680093
申请日：1993-12-16
申请人： KANSAI ELECTRIC POWER CO , NISSIN ELECTRIC CO LTD
发明人： KOIZUMI HIROSHI , KUROIWA YOSHIO , HIGUCHI KAZUHIRO , KUMEGAWA HIROSHI , YOSHIDA OSAMU , KAWAKATSU TAKESHI
IPC分类号： G01R31/08
摘要： PURPOSE:To provide a spotting method for accident such as lightning strike on railway, etc., capable of detecting an arrival time difference between a line waveform and a ground waveform by only a waveform outputted from an adder. CONSTITUTION:Surges of respective railways 1 to 3 are detected by surge sensors 5, a gain of induced phase to lightning stoke phase among output signals from these surge sensors 5 is varied by a gain converter 10, and an output signal from the surge sensors 5 of which gain is varied is added to an output signal from the other surge sensor 5 by an adder 6 to obtain a time different between the rise of line waveform and rise of ground waveform in the waveform outputted from the adder 6.

4. 发明专利

JP2001197666A SELF-EXCITING POWER CONVERTER 失效
公开(公告)号：JP2001197666A
公开(公告)日：2001-07-19
申请号：JP2000006622
申请日：2000-01-14
申请人： KANSAI ELECTRIC POWER CO , NISSIN ELECTRIC CO LTD
发明人： TOKUDA NOBUYUKI , KIKUOKA YASUHEI , TADA TOMOSHI , KAWAKATSU TAKESHI
IPC分类号： H02J3/01 , H02M1/12 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a hybrid self-exciting power converter where the capacity of a LC filter placed between a series circuit of a large-capacity rectangular wave converter and a small-capacity PWM converter and a system is reduced. SOLUTION: A hybrid self-exciting power converter, where a large-capacity rectangular wave converter 4 and a small-capacity PWM converter 6 are series- connected with each other, is provided with a control circuit 12 that detects a harmonic current flowing from a power system 1 to a LC filter 11, decomposes the detected harmonic current into harmonic components of a plurality of orders, and causes the small-capacity PWM converter 6 to produce a voltage in the direction, in which it operates against the decomposed harmonic components. Thus, in the self-exciting power converter, the flow of various harmonic components from the system side to the converter side is suppressed through the operation of the small-capacity PWM converter 6. As a result, a small- capacity filter that absorbs only the harmonic components flowing from the large-capacity rectangular wave converter 4 to the system side can be used for the LC filter 11 placed between the system side and the converter side.

5. 发明专利

JPH10170588A METHOD FOR LOCATING ACCIDENT POINT OF TRANSMISSION LINE 失效
公开(公告)号：JPH10170588A
公开(公告)日：1998-06-26
申请号：JP33179096
申请日：1996-12-12
申请人： KANSAI ELECTRIC POWER CO , NISSIN ELECTRIC CO LTD
发明人： KOIZUMI HIROSHI , HIGUCHI KAZUHIRO , KAWAKATSU TAKESHI
IPC分类号： G01R31/08
摘要： PROBLEM TO BE SOLVED: To provide a method for locating accident point of a transmission cable that is capable of easily and accurately detecting the reaching time difference of a line wave and a ground wave. SOLUTION: At one end of transmission lines 1 of a plurality of phases, surge currents and surge voltages are detected with surge current detectors 2a and surge voltage detectors 2b placed on each phase and those surge currents of each phase are added and the surge voltages of each phase are also added. The added surge voltage is divided by the added surge current and the time difference between the rise time of waveform of this impedance and the time of reversal of polarization. Based on this time difference, the accident point is standardized.

6. 发明专利

JPH10300808A FAULT LOCATION METHOD FOR TRANSMISSION LINE 失效
公开(公告)号：JPH10300808A
公开(公告)日：1998-11-13
申请号：JP10549397
申请日：1997-04-23
申请人： KANSAI ELECTRIC POWER CO , NISSIN ELECTRIC CO LTD
发明人： KIKUCHI TATSUO , KAWAKATSU TAKESHI
IPC分类号： G01R31/08
摘要： PROBLEM TO BE SOLVED: To simplify a structure for the fault location and automatically measure an arrival time difference between a direct wave and the first reflected wave. SOLUTION: A surge sensor 4 installed at one end of a transmission line 2 is used to take a surge waveform for low pass filter operation. Times for an intersection between the surge waveform to which the low pass filter operation is given and a positive/negative preset surge wave detecting comparison level are detected in sequence and a time difference between a time for the intersection at the first peak and a time for the intersection at the second peak is detected as a time difference T1 between an arrival time for the direct wave of a surge and an arrival time for the first reflected wave of the surge. A time T2 required for the surge to be reciprocally moved between one end and the other end of the transmission line 2 and a surge propagation speed (v) are used to calculate a distance Lx between one end of the transmission line 2 and a failure point where the surge is entered in accordance with Lx= v×(T2-T1)/2.

7. 发明专利

JPH0815363A FAULT LOCATION METHOD FOR TRANSMISSION LINE 失效
公开(公告)号：JPH0815363A
公开(公告)日：1996-01-19
申请号：JP15190494
申请日：1994-07-04
申请人： KANSAI ELECTRIC POWER CO , NISSIN ELECTRIC CO LTD
发明人： KOIZUMI HIROSHI , HIGUCHI KAZUHIRO , KAWAKATSU TAKESHI
IPC分类号： G01R31/08
摘要： PURPOSE:To obtain a simplified fault location system requiring only a fault locater disposed at one end of a transmission line. CONSTITUTION:The surge propagation speed (v) is previously determined for an objective transmission line 2 and a time T1, being elapsed before arrival of 2N-th surge wave intruded into a transmission line 2 after arrival of (2N-1)th surge wave (N=1, 2, 3), is measured using a surge sensor 4 disposed at one end of the transmission line 2. A time T2 being elapsed before arrival of (M+2)th wave (M=1, 2, 3,...) after arrival of M-th wave is also measured for two waves. The distance LX from one end of the transmission line 2 to a fault point is determined according to a formula; LX=vx(T1-T2)/2.

8. 发明专利

JPH063401A LOCATION OF ACCIDENT POINT ON TRANSMISSION LINE 失效
公开(公告)号：JPH063401A
公开(公告)日：1994-01-11
申请号：JP16078792
申请日：1992-06-19
申请人： KANSAI ELECTRIC POWER CO , NISSIN ELECTRIC CO LTD
发明人： KOIZUMI HIROSHI , KUROIWA YOSHIO , HIGUCHI KAZUHIRO , KUMEGAWA HIROSHI , YOSHIDA OSAMU , KAWAKATSU TAKESHI
IPC分类号： G01R31/08
摘要： PURPOSE:To accurately decate a ground discharge paint and also to simplify the configuration far obtaining the waveform for decision. CONSTITUTION:Firstly artificial lightning of a 3-phase transmission line 1 is applied, then surge signals obtained from surge sensors of respective phases 2A-2C are added together by an adder 3 for obtaining 3-phase addition waveform. Further, duration of wave front is obtained from the 3-phase addition waveform caused by the artificial lightning, and based upon the propagated distance of surge signal from the point the surge sensor is placed to the paint artificial lightning is applied and the duration of wave front of 3-phase addition waveform of surge signal, the proportional constant between the duration of wave front of 3-phase addition waveform and the propagated distance from the point the surge sensor to a paint of ground discharge is obtained. Then, the adder 3 adds together the surge signals obtained farm surge sensors of respective phases 2A-2C at ground discharge to obtain 3-phase addition waveform, and the duration of wave front is obtained from the 3-phase addition waveform of surge signal caused by ground discharge. Arithmetic operation is made for the duration of wave front with the proportional constant, so that the propagated distance of surge signal from the point the surge sensor to the point of ground discharge on the 3-phase transmission line 1 is obtained.

9. 发明专利

JP2000004126A POWER AMPLIFIER 失效
公开(公告)号：JP2000004126A
公开(公告)日：2000-01-07
申请号：JP17018998
申请日：1998-06-17
申请人： NISSIN ELECTRIC CO LTD
发明人： KAWAKATSU TAKESHI
IPC分类号： H03F3/217
摘要： PROBLEM TO BE SOLVED: To actualize higher-precision amplification easily by suppressing the distortion of the output voltage waveform of a PWM inverter and obtaining stable operation of the PWM inverter. SOLUTION: The power amplifier is equipped with the voltage type PWM inverter 1 and further equipped with an amplitude control circuit 6 and a phase control circuit 7 which extract the amplitude error and phase error between input and output signals and generate amplitude and phase correction signals Vc and Vd corresponding to the amplitude and phase errors and an inverter driving circuit 8 which perform turn-on control over the switching element of the PWM inverter 1 according to the amplitude and phase correction signals Vc and Vd; and a feedback circuit 9 which feeds an inverter output voltage instantaneous value back negatively is added between the input and output of the PWM inverter 1 and its feedback signal Vf and amplitude and phase correction signals Vc and Vd are supplied to the inverter driving circuit 8 after error amplification.

10. 发明专利

JPH10112615A POWER AMPLIFIER 失效
公开(公告)号：JPH10112615A
公开(公告)日：1998-04-28
申请号：JP26461096
申请日：1996-10-04
申请人： NISSIN ELECTRIC CO LTD
发明人： KAWAKATSU TAKESHI
IPC分类号： H02M7/48 , H03F3/217
摘要： PROBLEM TO BE SOLVED: To compensate an amplitude error and a phase error with high precision by using an amplitude error amplifier circuit and a phase error extract circuit so as to extract the amplitude error and the phase error between input/output signals respectively thereby generating corresponding amplitude control and phase control signals and controlling a switch element with a duty corresponding to the sum. SOLUTION: An amplitude of an output voltage from a transformer 27 is extracted as a feedback signal VO via a transformer 28. An input signal VI and a feedback signal VO are given to BPFs 31, 32, from which a 50 or 60Hz component is extracted and given to DC converters 33, 34. Then the DC component is subtracted from the feedback signal at a subtractor 35 and its error component is amplified by an error amplifier 36, the error amplified output is added to a reference DC voltage at an adder 37 and it is multiplied with the input signal VI at a multiplier 39 and then an amplitude correction signal is outputted to an adder 40. As to a phase error, a signal resulting from shifting the input signal VI by 90 deg. at a phase shifter 41 and the feedback signal VO with a phase difference θ with respect to the input signal VI are multiplied by a multiplier 44. In this case, a correction value is obtained by selecting a multiplication coefficient of the multiplier 39 to be the unity. According to the results above, a duty corresponding to the adder is used to correct the input signal VI with high accuracy.

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