Segmented controllable series reactor device and distribution line voltage control method thereof
A voltage control method and technology of series reactors, applied in circuit devices, AC network circuits, harmonic reduction devices, etc., can solve the problem of single inductive reactance value of power grid security compensation, improve safety and economy, and enhance no Power and voltage regulation capability, the effect of optimal power flow distribution
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Embodiment 1
[0030] Such as figure 1 The shown embodiment is a segmented controllable series reactor device, including a reactor and 3 switches; the total inductance value of the reactor is j7X L3 , there are two points N and P on the reactor, and the reactor is divided into three parts; the ratio of the inductance value of the three parts is 4:2:1; jX respectively L3 , j2X L3 , j4X L3 ; One switch is connected in parallel with one part of the reactor, and K switches are connected in series.
[0031] Such as figure 1 As shown, the left end point of the reactor is point S, and the right end point is point R. Electric energy is transmitted from the sending end SB of the power plant to the receiving end RB of the user side, and the reactor is connected in series to the line, that is, the left end S of the reactor and the sending end SB Connected, the right end R of the reactor is connected to the receiving end RB; then the SN section is expressed as L 1 , its inductance value is j4X L3 ...
Embodiment 2
[0034] Embodiment 2 includes all structures of Embodiment 1, such as figure 2 As shown, Embodiment 2 also includes a distribution line voltage control method based on a segmented controllable series reactor device, including the following steps:
[0035] Step 100, connecting segmented controllable series reactor devices in series at the line node m of the distributed photovoltaic system;
[0036] In a line with a high penetration rate of distributed photovoltaics, the circuit is equivalent to figure 2 The distribution shown, the equivalent load power at node i is P i +jQ i , there is a photovoltaic system connected to the grid at node n, and the power is P n +jQ n ; When the photovoltaic output is too large, it may cause the system voltage to exceed the limit, and the inherent reactive power compensation capability of the photovoltaic inverter is not enough to stabilize the voltage; Controllable series reactor device;
[0037] Step 200, by controlling each switch, find...
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