SPECIFICATIONS OF STATIC VAR COMPENSATORS TUTORIALS



Before specifying the compensators, compensator and system details, and operation and maintenance requirements must be specified. Some of the important items are listed in the following text even though this list is not comprehensive.

a. System details
1. System frequency variation under normal operating conditions, fault conditions, and generator outage conditions

2. Voltage regulation that is required and its precision

3. Maximum harmonic distortion with the compensator in service

4. Coordination of system protection with compensator protection and reactive power limits

5. Compensator energization details, including any necessary precautions

b. Compensator details
1. Maximum continuous reactive power requirements: capacitive and inductive

2. Overload rating and duration

3. Normal-rated voltage and limits of voltage between which the reactive power ratings must not be exceeded

4. Response times of the compensator for different system disturbances

5. Control requirements

6. Reliability and redundancy of components

c. Operation, maintenance, and installation requirements
1. Spare parts, provision for future expansion

2. Performance with unbalanced voltages or with unbalanced load

3. Cabling details, access, enclosure, and grounding

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