KVAH BILLING IN MSEDCL ON POWER FACTOR IS CREATING MORE MARKET FOR
HYBRID POWER FACTOR CONTROLLER
                                   Benefits
of maintaining near to unity power factor at load end were well proven and hence
DISCOM’s were using mechanisms like providing incentives for maintaining near
to unity power factor and penalising for the other (kvah billing). This action have triggered
perfectly and resulted in to a massive success. Most of the consumers in the
country are aware of the same and enjoyed the incentives through installation
of automatic power factor controllers. Market for APFC’s took a leap jump due
to this activity. Now DISCOM’s were observing that the whole purpose of
incentivising for improved power factor has already achieved and started
migrating towards KVAH billing directly.
But MSEDCL could not go for a
direct KVAH billing due to many requests coming from major consumers. Instead
they have straight away reduced the incentives from 7% to 3.5% in their latest tariff order released in Sep 2018. Also as per MSEDCL’s study, though PF Incentive
mechanism encourages the consumer to improve its lagging power factor and
maintain it to unity, there are cases of over compensation causing leading
power factor. There is no clarity about leading power factor in old Tariff
Order (2016). As is the case with lagging power factor, higher magnitude of
leading power factor is also not desirable. Therefore, the Commission
introduced penalty for leading power factor also.
Computation of PF was formulated where even leading power factor effect will also be accounted. Previously penalties were imposed when a consumer maintains power factor less than 0.9 LAGGING. But with the introduction of new clause penalties will gets imposed when a consumer maintains power factor less than 0.9 LEADING/LAGGING.
Computation of PF was formulated where even leading power factor effect will also be accounted. Previously penalties were imposed when a consumer maintains power factor less than 0.9 LAGGING. But with the introduction of new clause penalties will gets imposed when a consumer maintains power factor less than 0.9 LEADING/LAGGING.
Importance of Hybrid Power Factor Correction:
APFC (Automatic Power factor
controller) was the technology where in an automatic switching of capacitors were used to take place with the help of contactors, controlled by a relay. Since the
control is stepwise. The drawback of this type of technology can be explained
as below
As per new tariff order power
factor incentive is placed at 0.5 % for those maintaining 0.955 to 0.964 whereas
the incentive is placed at 1% for those maintaining at 0.965 to 0.974. If the
control level of power factor is stepwise and relatively slow due to contactor
logic then the consumer will knowingly or unknowingly loses 0.5% of rebate. Also
consumer will be penalised for leading power factor too as the stepwise control
of APFC cannot maintain exact power factor up to 3 digits accuracy.
Whereas an IGBT based intelligent
Hybrid PFC is a direct replacement of the traditional APFC with the advantages
of active technology. Like an APFC, the primary function of the Hybrid PFC is
reactive compensation. However, the correction is completely step-less,
instantaneous, and precise. Moreover, it can help with its unique priority
setting feature which allows consumers to get the maximum out of the installed
filter capacity by using any spare capacity for harmonic compensation, load
balancing, and neutral compensation too.
Features of Hybrid PFC’s:
- ·        Ultra-fast compensation
- ·        Superior performance on welding applications
- ·        Selective Harmonic compensation
- ·        Step-less Reactive Power Compensation
- ·        Negative Sequence Compensation (load balancing)
- ·        Zero Sequence Compensation (neutral compensation)
- ·        Possible Priority Selection settings for maximum flexibility
- ·        Closed Loop & Open Loop operation
- ·        Activity LogÂ
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