A Linearization Calculation Method of Data-Driven Power Grid Power Flow Equation Robust to Measurement Noise
A noise-measuring, data-driven technology that is applied to AC networks, circuit devices, and AC network circuits with the same frequency from different sources, and can solve problems such as reduced accuracy and noise in grid measurement data
Active Publication Date: 2019-11-22
TSINGHUA UNIV
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, the power grid measurement data contains noise. The method in the literature Liu Y, Zhang N, Wang Y, et al.Data-DrivenPower Flow Linearization: A Regression Approach[J].IEEE Transactions on SmartGrid, 2018, when the measurement data contains noise The accuracy is greatly reduced
At present, no research has proposed a linearization calculation method for data-driven power grid power flow equations that is robust to measurement noise
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0061] The data-driven power grid power flow equation linearization calculation method robust to measurement noise proposed by the present invention includes the following steps:
[0062] (1) Preprocess the measurement data in the historical operation data of the power grid. The measurement data includes node active power injection, node reactive power injection, node voltage phase angle and node voltage amplitude; the specific steps are as follows:
[0063] (1-1) Divide all N nodes of the power system into PQ, PV, and Vθ nodes, where PQ nodes represent nodes with known active power injection and reactive power injection, and PV nodes represent node active power injection and The node whose voltage amplitude is a known quantity, the Vθ node represents the node whose voltage amplitude and voltage phase angle are known quantities, according to the node type, the active power injection, reactive power injection, voltage amplitude and voltage The phase angle data are arranged in t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a linearization calculation method of a data driven power grid power flow equation for measuring noise robustness and belongs to the technical field of power grid power flow calculation and data driving. The linearization calculation method comprises the following steps: firstly, sorting out power grid historical data; then solving a linearization power flow equation parameter, solving a parameter initial value of the power flow equation, roughly adjusting the parameter and finely adjusting the parameter; finally, carrying out power grid real-time power flow calculation by utilizing the solved linearization power flow equation. According to the linearization calculation method provided by the invention, linearization is carried out on the power flow calculation byutilizing the power grid historical data, and the noise robustness in the data is measured; the precision of the power grid power flow calculation can be reduced and the calculation amount in a powergrid operation process is reduced; the operation cost of a power grid is easy to reduce; the method has a wide application prospect in the fields including power grid risk evaluation and calculation on more uncertainty analysis and the like; the method sufficiently considers noises in the measured data and meets conditions in the actual power grid better.
Description
technical field [0001] The invention relates to a data-driven power grid power flow equation linearization calculation method robust to measurement noise, belonging to the power grid power flow calculation field and the data-driven technical field. Background technique [0002] Power grid power flow analysis and optimization is the basis of power system planning, operation, and control. However, the nonlinearity of power grid power flow equations brings high computational burden and poor convergence challenges to power grid analysis and optimization algorithms. Especially for power grid risk assessment calculations involving more uncertainty analysis, and power market node electricity price calculations involving high real-time calculations, there are high requirements for the calculation time and calculation convergence of the algorithm. In the past, the linearization calculation method of power grid power flow equation based on model was difficult to guarantee the calculat...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/20
Inventor 刘羽霄张宁王毅康重庆卢丹
Owner TSINGHUA UNIV