A Multi-objective Coordinated Control Method for Distributed Power Flow Controller
A power flow controller and coordinated control technology, which is applied in the direction of AC network voltage adjustment, AC network circuit, single-network parallel feeding arrangement, etc., can solve problems such as complex interaction coupling effects, and achieve effective performance and optimization of distributed power flow control device, performance-enhancing effects
Active Publication Date: 2022-04-01
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0003] There are three-phase and single-phase converters on the parallel side of the distributed power flow controller, and there are hundreds of single-phase converters on the series side. The interactive coupling between them will be very complicated
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Embodiment 1
[0059] This embodiment takes the single-unit infinite system equipped with two sets of series-side distributed power flow controllers as the object, which includes generators G1 and G2 at both ends, bus bars B1 and B2, double-circuit transmission lines L1 and L2, and transformers on both sides For Δ-Y and Y-Δ connections, the parameters of each component on the line are: the power supply voltage of the generating end is 0.38kV, the voltage phase angle is 8.7°, the internal resistance is 1Ω, and the inductance is 0.1H; the power supply voltage of the receiving end is 0.38kV, the voltage phase angle is 0°; the impedance of the two lines is 0.279+j3.99Ω, the transformer ratio is 1:1; the end of the line is connected with a resistor with a resistance of 0.5Ω; the voltage value of the series-parallel DC capacitor is taken as 200V; the parallel side of the distributed power flow controller is installed on the neutral line of the generator and transformer T1, and two sets of series co...
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A multi-objective coordinated control method for a distributed power flow controller. This method first establishes the active power flow of the line, the reactive power flow of the line, the bus voltage at the head end of the line, the DC capacitor voltage on the series side, and the voltage between two converters on the parallel side. The DC capacitor voltage is the control variable, and the multi-objective coordinated control model of the distributed power flow controller is formed by taking the integral of the above-mentioned control variable and the variance of the corresponding controller setting reference value as the performance index as the performance index, and then the parameters of each component on the line Input the distributed power flow controller multi-objective coordinated control model to obtain the control parameters of the distributed power flow controller, and then coordinate and control the distributed power flow controller according to the control parameters. This design significantly improves the performance of the distributed power flow controller.
Description
technical field [0001] The invention belongs to the technical field of smart grid operation and stability control, and in particular relates to a multi-objective coordinated control method of a distributed power flow controller, so as to improve the working efficiency of the distributed power flow controller. Background technique [0002] Distributed Power Flow Controller (DPFC) not only has the functions of power regulation, voltage regulation, suppression of power system power oscillation, and enhancement of power system stability, but also has the characteristics of unbalance compensation and power quality management. The three-phase converter on the parallel side of the DPFC exchanges fundamental power with the system through the transformer. The active power is used to maintain the voltage of the DC capacitor at the target value, and the reactive power is used to control the bus voltage on the parallel side. The single-phase converter transmits the third harmonic power ...
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IPC IPC(8): H02J3/48H02J3/50H02J3/12
CPCH02J3/12H02J3/48H02J3/50H02J2203/20
Inventor 徐秋实黄涌郑旭唐爱红杜治赵红生乔立王巧鸽张述元
Owner STATE GRID CORP OF CHINA