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    • 6. 发明申请
    • GRID OSCILLATION ANALYSIS METHOD AND APPARATUS THEREFOR
    • 网格振荡分析方法及其设备
    • US20120232820A1
    • 2012-09-13
    • US13505118
    • 2010-11-18
    • Douglas Wilson
    • Douglas Wilson
    • G06F19/00G01R25/00H02J3/24
    • H02J3/24Y02E60/728Y04S10/265
    • A method for determining the contribution of a grid subsystem (12) to oscillations in grid frequency experienced by an external electrical grid (14) in an electrical power network (10). A measurement of grid frequency is taken in the grid sub-system (12) and/or the external electrical grid (14). The measurement(s) of grid frequency can be used to extract oscillations in grid frequency in the grid subsystem (12) and/or the external electrical grid (14). A measurement of active power is recorded on a transmission line (16c) between the grid subsystem (12) and the external electrical grid (14). The phase relationship between the oscillations in grid frequency and the oscillations in active power allows the contribution of the grid subsystem (2) to oscillations in grid frequency in the external electrical grid (14) to be determined.
    • 一种用于确定电网子系统(12)对电力网络(10)中的外部电网(14)经历的电网频率振荡的贡献的方法。 电网频率的测量在电网子系统(12)和/或外部电网(14)中进行。 电网频率的测量可用于提取电网子系统(12)和/或外部电网(14)中电网频率的振荡。 在电网子系统(12)和外部电网(14)之间的传输线(16c)上记录有功功率的测量。 电网频率振荡与有功功率振荡之间的相位关系允许确定电网子系统(2)对外部电网(14)中电网频率振荡的贡献。
    • 10. 发明授权
    • Epoxy resin compositions
    • 环氧树脂组合物
    • US4528342A
    • 1985-07-09
    • US649285
    • 1984-09-11
    • Douglas Wilson
    • Douglas Wilson
    • C08G59/00C08G59/18C08G59/20C08G59/40C08J5/24C08L63/00C08G63/00C08G69/00
    • C08J5/24C08L63/00C08J2363/00
    • A hardenable epoxy resin comprising a curable epoxy resin, a hardener for the epoxy resin and a polymer of epihalohydrin which composition is characterized in that the amount of the polymer of epihalohydrin in the composition is from 1 to 6 parts per one hundred parts by weight of the epoxy resin and in that the composition also comprises from 2 to 25 parts by weight per hundred parts by weight of the epoxy resin, of a polycarbonate having the general formula: ##STR1## where R.sub.1 and R.sub.2 are the same or different and are phenyl or cyclohexyl groups, R.sub.3 and R.sub.4 are the same or different and are hydrogen, methyl or cyclohexyl groups and n is from 60 to 400 and represents the average number of monomer units in the polymer chain.
    • 包含可固化环氧树脂,环氧树脂用固化剂和表卤代醇聚合物的可硬化环氧树脂,其组合物的特征在于组合物中表卤代醇的聚合物的量为每100份重量的 环氧树脂,并且组合物还包含每100重量份环氧树脂2至25重量份的具有以下通式的聚碳酸酯:其中R 1和R 2相同或不同,为苯基 或环己基,R 3和R 4相同或不同,为氢,甲基或环己基,n为60至400,表示聚合物链中单体单元的平均数。