Improving the dynamic performance of a complex AC/DC system by HVDC control modifications

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · IEEE Power Engineering Review (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.103690· OSTI ID:5975363

Hammad, A E ^[1]; Gagnon, J ^[2]; McCallum, D ^[3]

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1. ABB Power Systems, Baden (CH)
2. Hydro Quebec, Montreal (CA)
3. IREQ, Montreal (CA)

The power system of Hydro-Quebec has a peak load of approximately 27 GW. The great distance between the production sites and the load centers introduces stability limitations, which is the reason why the Quebec grid cannot be economically synchronized (through ac transmission with limited capacity) with the U.S. northeastern network. Power exports are therefore dependent on the use of HVDC links of which Hydro-Quebec now possesses five, for a capacity of over 2600 MW. Such a capacity will again soon increase. At the moment, the Chateauguay scheme has the largest HVDC capacity. It transfers 1000 MW by means of two Back-to-Back converter blocks. Various automatic control systems are installed on the Chateauguay scheme owing to the fact that a single circuit of a 765 kV ac line transmits the output of both the HVDC converter stations as well as the output from Beauharnois hydro generating station. Such controls have performed satisfactorily since 1984. However, a remarkable improvement of the overall ac/dc system dynamic performance can be gained by making certain modifications in some of these HVDC system controls. This paper presents the salient features of such control modifications, currently under consideration, using the results of an investigation by digital and analogue simulations that demonstrate the achieved improvements.

• OSTI ID: 5975363
• Journal Information: IEEE Power Engineering Review (Institute of Electrical and Electronics Engineers); (United States), Vol. 10:10; ISSN 0272-1724
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
HVDC SYSTEMS
PERFORMANCE
QUEBEC
CAPACITY
CONTROL SYSTEMS
DIGITAL SYSTEMS
DIGITAL-TO-ANALOG CONVERTERS
MODIFICATIONS
PLANNING
CANADA
DC SYSTEMS
DEVELOPED COUNTRIES
ELECTRONIC EQUIPMENT
EQUIPMENT
NORTH AMERICA
POWER SYSTEMS
240202* - Power System Networks
Transmission & Distribution- DC Systems- (1990-)
240100 - Power Systems- (1990-)