Calculation method of optimal Thevenin equivalent parameters based on volt-ampere characteristics of node ports
A Thevenin equivalent and volt-ampere characteristic technology, applied in the field of value parameter calculation, can solve problems such as deviation, achieve the effect of improving calculation speed and avoiding limitations
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Embodiment 1
[0053] This embodiment discloses the calculation method of the optimal Thevenin equivalent parameter based on the volt-ampere characteristics of the node port, by quickly obtaining the sample points on the real volt-ampere characteristic curve of the node port, and then using the fitting method to obtain the closest to the actual node port under the current section The linear characteristics of the volt-ampere characteristics can be used to obtain the optimal Thevenin equivalent parameters. Accordingly, the present disclosure proposes a method of finding the optimal Thevenin equivalent parameter according to the minimum deviation of the voltage-ampere characteristic expression of the node port.
[0054] In order to understand the technical concept of this application, the current Thevenin Theorem is explained:
[0055] Thevenin's theorem shows that a one-port linear network with an independent power supply and a linear resistor has a linear volt-ampere characteristic of the ex...
Embodiment 2
[0152] The optimal Thevenin equivalent parameter calculation system based on the volt-ampere characteristics of node ports, including:
[0153] The sample point acquisition module quickly obtains the node voltage vector and current vector estimated value of the node port volt-ampere characteristic sample point under the current state section based on the method of sensitivity;
[0154] Optimize the target module, the optimization target is: the voltage vector calculated by the current vector of the sample point through the Thevenin equivalent parameter and the voltage vector of the sample point have the smallest deviation;
[0155] Based on the objective function optimization solution, the real part and imaginary part of the optimal Thevenin equivalent impedance are calculated, so as to obtain the real part and imaginary part of the optimal Thevenin equivalent potential.
Embodiment 3
[0157] The purpose of this embodiment is to provide a computing device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the program, the following steps are implemented, including:
[0158] The sensitivity-based method quickly obtains the node voltage vector and current vector estimation values of the node port volt-ampere characteristic sample points under the current state section;
[0159] The optimization goal is: the voltage vector calculated by the current vector of the sample point through the Thevenin equivalent parameter has the smallest deviation from the voltage vector of the sample point;
[0160] Based on the objective function optimization solution, the real part and imaginary part of the optimal Thevenin equivalent impedance are calculated, so as to obtain the real part and imaginary part of the optimal Thevenin equivalent potential.
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