Point-on-wave controller with at least three monitored inputs

Abstract

A point-on-wave controller (1) for network synchronous switching of circuit breaker devices (2a, 2b, 2c) in an AC power transmission network (3) is disclosed, said point-on-wave controller comprising at least three Monitor interfaces (5a, 5b, 5c). A plurality of operating parameters of the power transmission network (3) are used to select a reference signal for the point-on-wave controller (1) and during calculation of an improved operating strategy for the circuit breaker arrangement (2a, 2b, 2c) .

Description

technical field [0001] The present invention relates to a point-on-wave controller device and method for controlling the operation of circuit breaker devices, in particular circuit breaker devices in AC power transmission networks, and power transmission networks comprising circuit breaker devices and wave cables Point the controller's compartment. Background technique [0002] To minimize switching transients during operation of circuit breakers (CBs) in power transmission networks, controlled switching of CBs (point-on-wave (POW) control, also called "synchronous switching") is state of the art. In short, CB operation is delayed in such a way that contact touching / disengaging and / or starting / stopping current flow will occur at points of time well suited to the CB, the load of the switch and / or the network. This point in time is usually chosen as a specific phase angle of the primary voltage or current in the network. For example, for capacitive loads, a well-suited energ...

AI Technical Summary

Problems solved by technology

[0009] However, all described implementations have the disadvantage that an appropriate switching strategy is not possible in all cases, e.g. in the case of two loads in a 11 / 2CB layout when the properties of one load change or two loads It is not possible to implement an appropriate switching strategy when all properties of

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