MULTI-CONTACT SWITCHING SYSTEM WITH FOUR POWER CONTACTS AND DC LINK Russian patent published in 2022 - IPC H02J9/06 H02J13/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, in particular, to devices for sectioning and redundant power lines and is intended for switching, protecting the electrical network from emergency operation and switching and atmospheric surges, electricity metering, power quality control, control of the amount and time of voltage disconnection in distribution electrical networks, sectioning and redundancy of distribution electrical networks, power lines, including those containing power sources that are not synchronized with each other. The proposed device allows switching and protecting power lines and equipment of a multi-contact switching system from emergency operation and switching and atmospheric surges, electricity metering, power quality control, voltage control simultaneously in four power networks. In the event of a voltage failure in one of the power networks and its appearance in another device, it allows you to perform the functions of automatic switching on of the reserve by turning on the corresponding TDDU. Also, the device allows you to section off the electrical network, including those containing sources of electricity that are not synchronized with each other, by dividing it into sections by disconnecting the corresponding power contact groups in case of damage in the power networks connected to the multi-contact switching system.

EFFECT: increasing the reliability of the multi-contact switching system, reducing the undersupply of electricity to consumers, reducing losses of energy supply organizations and, thus, increasing the reliability and efficiency of consumer power supply systems, including those to which various sources of electricity are connected, including those that are not synchronized with each other.

1 cl, 2 dwg