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

JP2004282887A Stabilizer for electric power system 有权
标题翻译：电力系统稳定器
公开(公告)号：JP2004282887A
公开(公告)日：2004-10-07
申请号：JP2003070045
申请日：2003-03-14
申请人： Chubu Electric Power Co Inc , Tm T & D Kk , ティーエム・ティーアンドディー株式会社 , 中部電力株式会社
发明人： KOTANI HIDEKI , ONOE YUKIHIRO , MIWA YASUSHI , TATE RYUJI , KOMATA KAZUYA , SATO SHIGERU , ISHIBASHI SATORU
IPC分类号： H02J3/24
摘要： PROBLEM TO BE SOLVED: To stabilize the system without excessively blocking generators, even if a stabilizer is applied to a local system which has short reclosing time. SOLUTION: The stabilizer for electric power systems operates as follows: based on the number of generators in operation and their outputs, before and after the occurrence of an accident in a transmission line in proximity with a generator group, where step-out of the electric power system is predicted and the measured values of bus voltage in proximity to the generators and generator currents, the phase angle fluctuation of the generator group, after the accident is removed is computed; the phase angle fluctuations of the generator group a short time ahead is computed with estimate; and if step-out of the generator group is forecasted based on the result of the computation, a part of the generators are blocked. The stabilizer is provided with a reclosing stabilization evaluating means 9, which is fed with an estimated value of the phase angle fluctuations of the generator group in the estimated reclosing time of the faulty transmission line, the total output of the generator group before the occurrence of the accident, the driving point reactance value after reclosing when the electric power system is viewed from the bus in proximity to the generators, and parameters including preset generator constants, and decides as being after reclosing if the electric power system is judged as unstable, the generators are blocked. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使将稳定器应用于具有短的重合闸时间的本地系统，也不会过度地阻塞发电机来稳定系统。解决方案：电力系统稳定器的运行方式如下：根据运行中的发电机数量及其输出，在发电机组附近的传输线路中发生事故之前和之后，并计算出发生器和发电机电流接近的总线电压的测量值，发生器组的相位角波动在事故消除后; 通过估计计算发电机组在短时间内的相位角波动; 并且如果基于计算结果来预测发电机组的步出，则部分发电机被阻断。稳定器配备有重合闸稳定评估装置9，该装置在故障传输线的估计重合闸时间内馈送发电机组的相位角波动的估计值，发电机组发生前的总输出发生事故时，在从发电机附近的总线观看电力系统后重新闭合后的驱动点电抗值，以及包括预设发电机常数的参数，并且如果电力系统被判断为不稳定则判定为重合闸之后发电机被阻塞。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2003274560A Load characteristic estimator, and system frequency stabilizer using it 有权
标题翻译：负载特性估计器和使用它的系统频率稳定器
公开(公告)号：JP2003274560A
公开(公告)日：2003-09-26
申请号：JP2002072582
申请日：2002-03-15
申请人： Chubu Electric Power Co Inc , Mitsubishi Electric Corp , 三菱電機株式会社 , 中部電力株式会社
发明人： HASHIMOTO HIROYUKI , KOWADA YASUYUKI , KIBI KAZUHITO , SAITO NORITOSHI , ONOE YUKIHIRO , TABATA YASUTO , YOKOI KOICHI , ITO HISATOKU
IPC分类号： H02J3/24
摘要： PROBLEM TO BE SOLVED: To realize a load characteristic estimator which obtains coefficient parameters in a load characteristic model at a high speed, in conformity with the load condition after removal of faults, and a system frequency stabilizer, using this load characteristic estimator. SOLUTION: This load characteristic estimator is equipped with a system state measuring means, which measures the various quantities of electricity of a monitoring load bus for monitoring a power system and detects the fault- measured data at fault of the power system, a data-accumulating means which accumulates the actual results data of fault detected in the past, a data analysis means which builds a characteristic model formula for estimating the dynamic characteristic parameters by analysing the fault actual result data, an auxiliary operation means which applies the fault-measured data to the characteristic model formula so as to decide the dynamic characteristic parameters and removes the dynamic parameters from a load model formula, and an estimating operation part which estimates the parameters after the removal of fault, based on the load model formula from which it is removed. The system stabilizing controller is materialized, using this load characteristic estimator. COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了实现一种负载特性估计器，其使用这种负载特性估计器来实现在高负载特性模型中高效率地满足除去故障之后的负载条件和系统频率稳定器的系数参数。
解决方案：该负载特性估计器配备有系统状态测量装置，其测量用于监视电力系统的监视负载总线的各种电量，并检测电力系统故障时的故障测量数据，数据累积装置，累积过去检测到的故障的实际结果数据;数据分析装置，通过分析故障实际结果数据构建用于估计动态特性参数的特征模型公式;辅助操作装置，测量数据到特征模型公式，以便根据负载模型公式决定动态特性参数并从负载模型公式中去除动态参数，以及估计操作部分，其根据负载模型公式来估计故障消除后的参数被删除。使用该负载特性估计器实现系统稳定控制器。版权所有（C）2003，JPO

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