STATIC REACTIVE POWER COMPENSATOR Russian patent published in 2020 - IPC H02J3/16 H02J3/18 G05F1/70 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and power electronics and can be used to control the power of controlled reactive power compensators in order to ensure the balance of reactive power at their connection point. In static reactive power compensator operating from sinusoidal alternating voltage source and comprising series connection of reactive element and variable sinusoidal voltage controller, unit for measuring voltage at source of sinusoidal alternating voltage, unit of control system, which sets control actions on regulator of variable sinusoidal voltage, providing formation of voltage on reactive element with its required operating value, regulator of variable sinusoidal voltage includes transformer, which primary winding is connected in series with reactive element, and its secondary winding is made in the form of isolated sections connected to switch, consisting of two parallel connected branches. Each branch consists of serial connection of controlled keys. Outputs of each section of the secondary winding of the transformer are connected between different symmetrical points of connection of controlled keys of parallel branches of the switch so that their unlike outputs are uniformly distributed along opposite branches of the switch, and one of common points of connection of parallel branches of switch is connected to common point of connection of reactive element and source of sinusoidal alternating voltage. Other common point of connection of the parallel branches of the switch is connected to one of the outputs of the primary winding of the transformer, and similar outputs of different sections of the secondary winding of the transformer, which are located on unlike branches of the switch, are connected by additional controlled keys.

EFFECT: elimination of higher harmonics in compensator current curve during its control, improvement of quality of electric energy in connection point of reactive power compensator to power transmission line, expansion of its functional capabilities due to use of technical solution applicable for construction of reactive power compensators of both inductive and capacitive nature, as well as increase of discrete levels of reactive power control.

2 cl, 6 dwg