Intelligent series-parallel reactive power compensation component-based power grid distributed-control system and implementation method for same

[0012] figure 1 It is a schematic diagram of respectively setting series and parallel reactive power device compensation intelligent components: it at least includes a three-phase current sampling circuit, a three-phase complementary voltage sampling circuit, a controller, nine switches, and six compensation capacitors; the current sampling is It consists of three transformers La, Lb, and Lc used to detect three-phase current loads. One end of them is respectively connected to the input ends of AI11, AI12, and AI13 of the power controller, and the other ends are connected together, and then connected to the power controller. on the 0 terminal of the device. The voltage sampling circuit is connected to the Ua1, Ub1, Uc1, Ua2, Ub2, Uc2 of the power supply through the primary side of the voltage transformer, and the secondary side is respectively connected to the AI1, AI2, AI3, AI21, The detection circuit connected to AI22 and AI23. The controller has the ability to detect fundam

[0014] figure 2 It is the schematic diagram of the compensation intelligent component of the series-parallel shared compensation device: it includes a shell and a main switch, three current sampling circuits, three voltage sampling circuits before compensation, and three voltage sampling circuits after compensation. , a power controller, twelve switches, and three compensation capacitors; the current sampling is composed of three transformers La, Lb, and Lc for detecting three-phase current loads, and one end of them is respectively connected to the controller The AI11, AI12, and AI13 input ends of the power controller are connected together, and then connected to the 0 terminal of the power controller. The voltage sampling circuit is connected with the power supply Ua1, Ub1, Uc1, Ua2, Ub2, Uc2 and the secondary side with the AI1, AI2, AI3, AI21, AI22 of the rate controller respectively through the primary side of the voltage transformer , AI23 connected detection circuit. Swi

[0017] image 3It is a block diagram of a distributed compensation system based on series-parallel compensation intelligent components: it includes intelligent components for series-parallel reactive power compensation that perform reactive power compensation for power grids of different voltage levels. In this example, the intelligent components for series-parallel reactive power compensation are 11 The intelligent component 1n to series-parallel reactive power compensation is an intelligent component to series-parallel reactive power compensation for 110KV power grid; the intelligent component 21 to series-parallel reactive power compensation is to 10KV Intelligent components for series-parallel reactive power compensation for power grids; intelligent components for series-parallel reactive power compensation 31 to intelligent components for series-parallel reactive power compensation 3n are series-parallel reactive power compensation for 0.4KV power grids Smart components. Th