Bad Data Identification Method for Electric-Heat Interconnection System Based on Lagrangian State Estimation
A state estimation and interconnection system technology, applied in the direction of electrical digital data processing, data processing application, digital data information retrieval, etc., can solve the problem of inability to effectively identify bad data in the integrated energy system of electric heating interconnection
Active Publication Date: 2020-09-18
HOHAI UNIV
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[0004] Purpose of the invention: The purpose of the present invention is to provide a method for identifying bad data in an electric heating interconnection system based on Lagrangian state estimation, which is used to solve the problem in the prior art that it is impossible to effectively identify bad data in an electric heating interconnection integrated energy system
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[0094] The present invention will be further described below in conjunction with accompanying drawing and embodiment:
[0095] The present application discloses a method for identifying bad data in an electric heating interconnection system based on Lagrangian state estimation, which includes the following steps:
[0096] (1) Obtain the power grid information and heating network information of the electric-heat interconnection integrated energy system respectively. Among them, the obtained grid information includes: grid topology, branch parameter information, generator parameter information and grid measurement information; heating network information includes: the length, diameter, roughness, impedance coefficient of each pipe, the thermoelectric ratio of the coupling element and the thermal Network measurement information.
[0097] (2) Establish and solve the Lagrangian state estimation model of the electricity-heat interconnection integrated energy system considering the ...
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The invention discloses a method for identifying bad data of an electric heating interconnected comprehensive energy system based on a Lagrange state estimator. The method comprises the following steps: (1) acquiring power grid information and heat supply network information of the electric heating interconnected comprehensive energy system; (2) establishing and solving an electric-thermal interconnected comprehensive energy system Lagrange state estimation model considering equality constraints; (3) calculating a residual sensitivity matrix and regularization residual of each measurement; (4)setting a maximum regularization residual error threshold value, judging whether the maximum value of the regularization residual error is out of limit or not, if the maximum value of the regularization residual error is out of limit, judging that the measurement position is bad in data, and removing the bad data; and (5) returning to the step (2), the step (3) and the step (4) until the maximumvalue of the regularization residual error is smaller than a set threshold value. According to the method, the number of key measurements in the system can be reduced, and various bad data in the electric heating interconnected comprehensive energy system can be effectively identified.
Description
technical field [0001] The invention relates to detection, analysis and control of a power system, in particular to a method for identifying bad data in an electric-heat interconnection system based on Lagrangian state estimation. Background technique [0002] While meeting the most common energy needs of users, the electric-heat interconnection integrated energy system improves the economic and environmental benefits of the energy system, is also conducive to smoothing the output fluctuations of intermittent new energy sources, and promotes the development of renewable energy. The online scheduling, control and optimization strategies of the system rely on complete and reliable real-time data support. Due to economic, technical and measurement environment reasons, there are inevitably bad data in the existing measurement data set. It is more common in heating networks with harsh environments, which hinders the management system from obtaining real-time and accurate system s...
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IPC IPC(8): G06F16/2458G06F17/12G06F17/16G06Q50/06H02J3/00
CPCG06F16/2462G06F17/12G06F17/16G06Q50/06H02J3/00
Inventor 臧海祥耿明昊卫志农孙国强黄蔓云陈胜
Owner HOHAI UNIV