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Iranian Journal of Electrical and Electronic Engineering، جلد ۷، شماره ۲، صفحات ۱۳۱-۱۴۰
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی A Novel Index for Online Voltage Stability Assessment Based on Correlation Characteristic of Voltage Profiles
چکیده انگلیسی مقاله Abstract: Voltage instability is a major threat for security of power systems. Preserving voltage security margin at a certain limit is a vital requirement for today’s power systems. Assessment of voltage security margin is a challenging task demanding sophisticated indices. In this paper, for the purpose of on line voltage security assessment a new index based on the correlation characteristic of network voltage profile is proposed. Voltage profile comprising all bus voltages contains the effect of network structure, load-generation patterns and reactive power compensation on the system behaviour and voltage security margin. Therefore, the proposed index is capable to clearly reveal the effect of system characteristics and events on the voltage security margin. The most attractive feature for this index is its fast and easy calculation from synchronously measured voltage profile without any need to system modelling and simulation and without any dependency on network size. At any instant of system operation by merely measuring network voltage profile and no further simulation calculation this index could be evaluated with respect to a specific reference profile. The results show that the behaviour of this index with respect to the change in system security is independent of the selected reference profile. The simplicity and easy calculation make this index very suitable for on line application. The proposed approach has been demonstrated on IEEE 39 bus test system with promising results showing its effectiveness and applicability.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله محمدرضا آقامحمدی | m r aghamohammadi
bld. vafadar, tehranpars, tehran, iran


s هاشمی | s. hashemi
bld. vafadar, tehranpars, tehran, iran


محمدصادق قاضی زاده | m s ghazizadeh
bld. vafadar, tehranpars, tehran, iran
نشانی اینترنتی http://ijeee.iust.ac.ir/browse.php?a_code=A-10-196-2&slc_lang=en&sid=en
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده 1-Power Systems Stability
نوع مقاله منتشر شده Research Paper
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