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TEPCO has accomplished stable and reliable power system to achieve high quality power supply. To realize the well-balance performance, TEPCO improves protection performance, develops various protection systems and uses appropriate controller etc.

Transmission Network
Electric Energy Storage
Planning

Planning

System Planning (Bulk Power System) System Planning (Regional Power System)
  • Producing of Regional Power System Master Plan (More than 66kV System)
Producing of Regional Power System Master Plan (More than 66kV System)
Consultancy on Regional Power System Master Plan for Required Reliability of the Area/Customers and the Appropriate Capital Investment.

1. The Required Reliability Level
The required reliability level of regional supply network should be suitable to the
characteristics of the area.
For instance, additional countermeasure should be taken in order to keep higher
reliability of important area or customers at the point of social security.

2. Proposal of the Master Plan for Required Reliability
Step1:
Preparation of the appropriate Regional Power System Master Plan
Step2:
Evaluation of the Master Plan in comparison with a conventional style of the client company's existing power system
3. Evaluation of the Appropriate Master Plan
As for reliability analysis, the expected outage MW by using N-1 planning standard is estimated in some cases of power system plan. Besides the N-1 planning standard method, the probability of outage by using Expected Outage Simulating System is computed.

Our Experience:
Title: “High Dense Power-Transmission Planning in Taipower Northern Area System”
Client: Taiwan Power Company (Taipower)
Term: April – August, 1998
Outline: Taipower has planned the“High Dense Power-Transmission Planning in Taipower Northern Area System” for the purpose of planning the future network system to meet the load demand and related power development program. The system impact study was performed in advance to prevent negative influence and overall study includes the analysis of power flow, bus duty, and stability in Taipower system so as to meet Taipower system planning criteria.


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