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1. 发明专利

JP2000092705A POWER SYSTEM POWER FLOW MONITORING DEVICE 失效
公开(公告)号：JP2000092705A
公开(公告)日：2000-03-31
申请号：JP25795098
申请日：1998-09-11
申请人： CHUBU ELECTRIC POWER , FUJI ELECTRIC CO LTD
发明人： IMAIZUMI NAOHITO , IKEDA NOBUTAKA , FURUI MAKOTO , CHO TOKUHYO , KAMETANI KATSUHISA , TAKENAKA MICHIO , KOIKE TOMOHIRO , WATANABE SHIGERU
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide a power system power flow monitoring device which can monitor the power system of a load system quantitatively with high precision without using a human power and, further, can understand a future total system power flow status with high precision, quantitatively and objectively. SOLUTION: A load presumption unit 11 presumes a present end load value (instantaneous value) in accordance with various types of data stored in a system state value storage unit 31, a reference power flow data storage unit 34, an equipment data storage unit 35 and a past record data storage unit 36, and by utilizing the characteristics of a radial system. A load prediction unit 13 predicts an end load value in future (on that day, tommorow, etc.), in accordance with the presumption result of the load presumption unit 11 and data stored in the past record data storage unit 36. A power flow calculation unit 15 calculates a present and future power flow statuses in accordance with data stored in the system state value storage unit 31 and a presumed data storage unit 14, and the present end load value (instantaneous value) presumed by the load presumption unit 11. A system reliability judgement unit 16 can monitor and judge the reliability of a whole object system not only at present but also in future in accordance with the presumption result of the load presumption unit 11 and, further, with the prediction result of the load prediction unit 13.

2. 发明专利

JPS63194756A PIPING SYSTEM FOR ELECTROSTATIC PRECIPITATOR 失效
公开(公告)号：JPS63194756A
公开(公告)日：1988-08-11
申请号：JP2505787
申请日：1987-02-05
申请人： FUJI ELECTRIC CO LTD
发明人： GOTOU AKIRA , MORIKUBO TSUGIO , KASUGAI TAKAYUKI , TAKAHASHI TAKEO , WATANABE SHIGERU
IPC分类号： B03C3/66 , B03C3/82
摘要： PURPOSE:To eliminate the need of special space for construction and to easily carry out the maintenance, by providing control pipings and a wiring duct to the outlet side (backside) of a cabinet and providing the bundled lead-in openings of pipings and wirings respectively to the side part to simplify the wiring and piping. CONSTITUTION:Plural dust collecting part A are received in a cabinet 1 mounted on a base 2. And, the control piping 5a, 5b are provided to the upper inner side of the back surface of the outlet side of the cabinet 1, and electric wirings 7 are received in the wiring duct 6 provided to the outlet side of the base 2. Moreover, the bundled lead-in openings 8a, 8b, 9 for the control pipings 5a, 5b and for the wiring duct 6 respectively are provided to the side surface of the cabinet 1. As a result, the maintenance is easily carried out because the space for maintenance is large enough without bent pipes for construction.

3. 发明专利

JPH07275735A OPERATION OF ELECTROSTATIC PRECIPITATOR FOR TUNNEL 失效
公开(公告)号：JPH07275735A
公开(公告)日：1995-10-24
申请号：JP6983094
申请日：1994-04-08
申请人： FUJI ELECTRIC CO LTD
发明人： NAKAYAMA TSUTOMU , WATANABE SHIGERU , SEKINO SHUJI
IPC分类号： B03C3/68 , B03C3/02 , B03C3/78
摘要： PURPOSE:To operate a two-stage electrostatic precipitator consisting of a charging part and a dust collecting part while minimizing the generation of ozone in the normal running and maintaining high dust collecting efficiency under a stabilized operating voltage. CONSTITUTION:A voltage to be impressed on the discharge wire 2a of a charging part 2 from a high-voltage DC power source 7 is kept at the plus polarity generating ozone at a low rate, a voltage to be impressed on the ungrounded electrode plate 3a of a dust collecting part 3 is fixed to a minus polarity by which the discharge voltage is stabilized, and the precipitator is operated. Alternatively, the voltage to be impressed on the charging part is kept at a plus polarity in the normal running, and the polarity is transiently converted to minus when the operation is resumed after the electrode plate of the dust collecting part is cleaned. The generation of ozone is minimized in total, a sparkover is suppressed when the operation is resumed after the electrode plate is cleaned, and the operating voltage is stabilized, and high dust collecting efficiency is secured.

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