Reliability of power systems define the utility’s capability to minimize outage frequency and duration. For regulatory purposes, power system reliability indices are evaluated for performance based regulation (PBR). In the Philippines three performance indicators on system reliability are among the indices evaluated to assess transmission and distribution electric systems for regulatory years involved. System Average [...]
Archive for the ‘Power Systems’ Category
4 Oct
Demand-Side Management Practices
The electric power system as driven by economic market forces experiences intensive utilization. To keep electric power systems continue to operate in a reliable and secured manner, resources aside from power generation are needed. Demand-side management has been taking its place in supporting power system operations and planning in the deregulated era. Significant reliability [...]
29 Sep
Solving Non-Technical Losses Problem by Technical Methods
Non-technical losses in distribution systems comprised about 2-3%, my estimate, of the total system losses. Total distribution system losses equals technical losses plus non-technical losses.
In my experience and some readings, I believe that non-technical losses can be minimized or mitigated by utilizing non-technical strategies.
1. Modeling and benchmarking technical losses thru computer simulations – if a [...]
27 Sep
Power Quality Problems Always Exist
The Philippine Distribution Code (PDC) has Power Quality (PQ) performance regulation for Distribution Utilities. In Section 3.2 of the PDC, it provides generalities and specific limitations for quality regulation. I have copied section 3.2.1.2 from the PDC for the purpose of this article, see below.
In this section, the PDC points to the identification of a [...]
18 Sep
Power Factor Planning for Wind Power Interconnection
When interconnecting wind power generation in a power system, planners interconnect a “negative” load. Wind power generation normally utilize induction generators which are capable of producing real power (watts) but not reactive power (vars) in contrast with synchronous generators.
In this case, reactive power support is needed for wind power generation to supply power to the [...]
9 Sep
Less Transmission Capacity equals High Electricity Market Prices
Recent postings of Wholesale Electricity Spot Market (WESM) electricity spot prices showed remarkable increases due to the damage of one 600MVA 500kV/230kV transformer at San Jose substation in Bulacan. The damage 600MVA transformer is one of four 600MVA 500kV/230kV power transformers in the power substation. The San Jose 500kV substation delivers power generation from [...]
8 Sep
Regulating Continuing Education
The Institute of Integrated Electrical Engineers (IIEE) and the Borad of Electrical Engineering (BEE) of the Professional Regulation Commission (PRC) announced the return of Continuing Professional Education (CPE) effective January 2009. CPE units are requirements for renewing electrical engieering practice license.
CPE has been an issue among licensed electrical engineers and electricians in the Philippines for [...]
1 Sep
Wind Power Low Voltage Ride Through
Wind power generation has taken its place in its share of electric power generation around the globe. Wind power generation normally utilizes induction generators for power production. In this case, these type of generators do not need synchronization when connecting or reconnecting to the electric grid or to any point of interconnection (POI).
When planning wind [...]
31 Aug
Conflict in Quality Regulation of Distribution Utilities
The Philippine Distribution Code (PDC) requires all User connection points that all Power Quality (PQ) requirements under PDC Section 3.2 be complied with. The PDC section 3.2.3.4 stresses this policy for voltage variations, see below. There are other similar statements for other PQ indices to be complied along section 3.2 of the PDC.
For new distribution [...]
28 Aug
Bring Down Power Rates by UP
As a Filipino living outside the Philippines, I have missed some research development like the study presentation by University of the Philippines (UP) professors on Reducing Power Rates in Generation. I have so much respect for the researchers since some of them have been my professors in my unfinished PhD degree in power systems.
Their study [...]
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