Sensitivity Analysis of Real-Time Locational Marginal Price to SCADA Sensor Data Corruption
- Authors
- Choi, Dae-Hyun; Xie, Le
- Issue Date
- May-2014
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Economic dispatch; locational marginal price (LMP); power market; supervisory control and data acquisition (SCADA); sensitivity analysis; state estimation
- Citation
- IEEE TRANSACTIONS ON POWER SYSTEMS, v.29, no.3, pp 1110 - 1120
- Pages
- 11
- Journal Title
- IEEE TRANSACTIONS ON POWER SYSTEMS
- Volume
- 29
- Number
- 3
- Start Page
- 1110
- End Page
- 1120
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/67755
- DOI
- 10.1109/TPWRS.2013.2293634
- ISSN
- 0885-8950
1558-0679
- Abstract
- This paper examines the impact of supervisory control and data acquisition (SCADA) data corruption on real-time locational marginal price (LMP) in electricity markets. We present an analytical framework to quantify LMP sensitivity with respect to changes in sensor data. This framework consists of a unified LMP sensitivity matrix subject to sensor data corruption. This sensitivity matrix reflects a coupling among the sensor data, an estimation of the power system states, and the real-time LMP. The proposed framework offers system operators an online tool to: 1) quantify the impact of corrupted data at any sensor on LMP variations at any bus; 2) identify buses with LMPs highly sensitive to data corruption; and 3) find sensors that impact LMP changes significantly and influentially. It also allows system operators to evaluate the impact of SCADA data accuracy on real-time LMP. The results of the proposed sensitivity based analysis are illustrated and verified with IEEE 14-bus and 118-bus systems with both Ex-ante and Ex-post real-time pricing models.
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