Load Estimation of Complex Power Networks from Transformer Measurements and Forecasted Loads
This paper presents a load estimation method applicable to complex power networks (namely, heavily meshed secondary networks) based on available network transformer measurements. The method consists of three steps: network reduction, load forecasting, and state estimation. The network is first mathe...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Complexity |
| Online Access: | http://dx.doi.org/10.1155/2020/2941809 |
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| author | Haina Rong Francisco de León |
| author_facet | Haina Rong Francisco de León |
| author_sort | Haina Rong |
| collection | DOAJ |
| description | This paper presents a load estimation method applicable to complex power networks (namely, heavily meshed secondary networks) based on available network transformer measurements. The method consists of three steps: network reduction, load forecasting, and state estimation. The network is first mathematically reduced to the terminals of loads and measurement points. A load forecasting approach based on temperature is proposed to solve the network unobservability. The relationship between outdoor temperature and power consumption is studied. A power-temperature curve, a nonlinear function, is obtained to forecast loads as the temperature varies. An “effective temperature” reflecting complex weather conditions (sun irradiation, humidity, rain, etc.) is introduced to properly consider the effect on the power consumption of cooling and heating devices. State estimation is adopted to compute loads using network transformer measurements and forecasted loads. Experiments conducted on a real secondary network in New York City with 1040 buses verify the effectiveness of the proposed method. |
| format | Article |
| id | doaj-art-e692e6bd9b9c4d1da18e2771d9caf491 |
| institution | Kabale University |
| issn | 1076-2787 1099-0526 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Complexity |
| spelling | doaj-art-e692e6bd9b9c4d1da18e2771d9caf4912025-02-03T01:04:40ZengWileyComplexity1076-27871099-05262020-01-01202010.1155/2020/29418092941809Load Estimation of Complex Power Networks from Transformer Measurements and Forecasted LoadsHaina Rong0Francisco de León1School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaDepartment of Electrical and Computer Engineering, New York University, Five Metrotech Center, Brooklyn, NY 11201, USAThis paper presents a load estimation method applicable to complex power networks (namely, heavily meshed secondary networks) based on available network transformer measurements. The method consists of three steps: network reduction, load forecasting, and state estimation. The network is first mathematically reduced to the terminals of loads and measurement points. A load forecasting approach based on temperature is proposed to solve the network unobservability. The relationship between outdoor temperature and power consumption is studied. A power-temperature curve, a nonlinear function, is obtained to forecast loads as the temperature varies. An “effective temperature” reflecting complex weather conditions (sun irradiation, humidity, rain, etc.) is introduced to properly consider the effect on the power consumption of cooling and heating devices. State estimation is adopted to compute loads using network transformer measurements and forecasted loads. Experiments conducted on a real secondary network in New York City with 1040 buses verify the effectiveness of the proposed method.http://dx.doi.org/10.1155/2020/2941809 |
| spellingShingle | Haina Rong Francisco de León Load Estimation of Complex Power Networks from Transformer Measurements and Forecasted Loads Complexity |
| title | Load Estimation of Complex Power Networks from Transformer Measurements and Forecasted Loads |
| title_full | Load Estimation of Complex Power Networks from Transformer Measurements and Forecasted Loads |
| title_fullStr | Load Estimation of Complex Power Networks from Transformer Measurements and Forecasted Loads |
| title_full_unstemmed | Load Estimation of Complex Power Networks from Transformer Measurements and Forecasted Loads |
| title_short | Load Estimation of Complex Power Networks from Transformer Measurements and Forecasted Loads |
| title_sort | load estimation of complex power networks from transformer measurements and forecasted loads |
| url | http://dx.doi.org/10.1155/2020/2941809 |
| work_keys_str_mv | AT hainarong loadestimationofcomplexpowernetworksfromtransformermeasurementsandforecastedloads AT franciscodeleon loadestimationofcomplexpowernetworksfromtransformermeasurementsandforecastedloads |