Browse Conferences
Performance enhancement of modular multi-level converters using a direct phase current control technique
This paper introduces a new method of controlling the arm currents in a VSC called direct current control. This method is a viable alternative to the commonly used decoupled control technique. The main advantages of this method are the simp...
Wide-area control of multi-infeed HVDC links for targeted swing mode damping using special feedback signals
This paper investigates a Wide Area Measurement based robust damping control for multi-infeed VSC HVDC links embedded in the ac system. The feedback signal for the controller design is synthesized from the local and remote signals which res...
Fast frequency response in UK grid — Challenges and solution
The stability of power systems, especially regarding frequency and voltage, is gaining attention due to increasing shares of renewable sources. This development is particularly critical for island grids with ambitious renewable integration ...
Low frequency active power oscillation damping using a MMC-VSC HVDC link
This paper investigates the use of MMC HVDC for low frequency active Power Oscillations Damping (POD). The advantage of the MMC topology is that it the converter has an inherent energy storage capability and some of this capability can be u...
Protection of HVDC grids using unidirectional DC circuit breakers and fast local protection algorithm
This paper investigates the application of unidirectional DC circuit breakers namely current releasing DC circuit breaker in protection of multi-terminal HVDC grids. The design procedure is extended for multi-terminal HVDC grid. Furthermore...
Studies of dynamic interactions in hybrid ac-dc grid under different fault conditions using real time digital simulation
High Voltage Direct Current (HVDC) grid concept has recently been introduced as the next step to the point-to-point HVDC links to maximise the benefits of more power flow share, and reduce the impact of renewables intermittency. However, th...
Low speed protection methodology for a symmetrical monopolar HVDC network
Protecting a future HVDC network from short circuit DC faults is presently expected to require extensive implementation of fast HVDC circuit breakers, allowing for rapid fault isolation. The requirement for circuit breakers may, however, be...
A multi-vendor protection strategy for HVDC grids based on low-speed DC circuit breakers
A protection strategy for Multi-terminal HVDC (MTDC) grids based on AC/DC converters without fault handling capability such as half-bridge MMC converters is presented in this paper. The key components of the proposed strategy consist of DC ...
Enhancement of power system small-signal stability by coordinated damping control of multiple FACTS devices
In this paper, a Sequential Approach is described to design the supplementary damping controller of a ThyristorControlled Series Compensator (TCSC) and a Static Synchronous Compensator (STATCOM) with a multi-model system to enhance power sy...
A control strategy for TCSC to mitigate SSR with local measurements
In this paper, a new control strategy for Thyristor Controlled Series Compensator (TCSC) to mitigate Sub-Synchronous Resonance (SSR) problems is introduced. Different from conventional sub-synchronous damping controller, this scheme involve...