Control of multiterminal dc systems

Technical Report · Sat May 01 04:00:00 EDT 1976

OSTI ID:5595883

Nozari, F

A new control scheme for parallel multiterminal dc systems is proposed. The scheme is divided into two separate functions: (1) a supervisory control called the System Monitor-State Predictor (SMSP), which determines the steady state operating point of the system from ac voltage measurements, power requirements at the converters, and the dc network configuration; and (2) the feedback controllers which drive the system to the desired operating point supplied by the SMSP. Systematic methods are presented for computing the optimal and suboptimal feedback controllers. Specific suboptimal controllers are considered in detail and compared with the optimal control, and it is shown that use of local feedback measurements is possible with negligible loss of dynamic performance. A detailed hybrid computer simulation of the proposed EPRI-Consolidated Edison 100 MW dc line, a simplified simulation of the Pacific Northwest-Pacific Southwest dc Intertie, and finally a detailed hybrid simulation of a four terminal dc system is used to evaluate the behavior of the proposed control scheme. Results from the simulations verify the excellent performance of the control during large disturbance to the system and during steady state operation.

• Research Organization: Purdue Univ., Lafayette, IN (USA). School of Electrical Engineering
• OSTI ID: 5595883
• Report Number(s): PB-297844
• Country of Publication: United States
• Language: English

Related Subjects

200302* -- Power Transmission & Distribution-- DC Systems-- (1989-)
24 POWER TRANSMISSION AND DISTRIBUTION
COMPUTERIZED SIMULATION
CONTROL SYSTEMS
CURRENTS
DC SYSTEMS
DIRECT CURRENT
ELECTRIC CURRENTS
FEEDBACK
LOAD MANAGEMENT
MANAGEMENT
POWER SYSTEMS
POWER TRANSMISSION
SIMULATION