3.2.2 Organizational
requirements
3.2.2.1 Operations
reengineering
These involves an impact study for the re-engineering
(rethinking and redesign) of all the business/operations processes as a result
of the new functionalities introduced by this new SCADA/EMS system and the new
electricity market system structure.
The main objective of the TSO is to operate the Cameroonian
electricity transmission network in its most secured and reliable state (normal
state) using the functionalities of the SCADA/EMS subsystem of the new PMS
system to
Ø Anticipate potential problems
Ø Apply preventive measures
Ø Quickly respond to actual problems
Operations reengineering requires the following main issues
I) Establishment of a grid code containing
· Roles, Responsibilities and linkages of market
participants (generators, transmitters and distributors), defining the
rights and obligations of the participants regarding the operation of the
Transmission system
· Terms and conditions for connection to the
Transmission System , defining connection conditions (for generators,
distributors and end-use customers), technical design and construction
requirements applicable to the service providers as well as the Transmission
System development process and methodology
· Terms and conditions for providing transmission
network and system operation services
· Operation and quality standards for
transmission and transmission system operation, focusing on quality
standards with respect to product (electricity) quality, Quality of supply and
system reliability requirements
· Scheduling and Dispatch arrangements for
generation and transmission network
· Commercial Rules related to Dispatch, energy
balancing and Settlement calculations in the Bilateral Contract
Model
· Pricing principles and tariffs for the
provision of transmission and transmission system operation services,
specifying the objectives, structure and the methodologies employed in
transmission tariffs.
· Information (exchange) requirements for
transmission system operation, specifying the information requirements
and obligations of all the parties associated with system operation.
· Grid Code Governance, detailing all
aspects of Grid Code governance and in particular the procedures for
rules change.
II) Operating policies as well as newly established operating
rules and procedures for all of the processes involved in the following
operations
· Monitoring operations: real time supervision and
control
· Transmission and dispatching operations: transmission
operations, scheduling operations and dispatching operations
· Back-up operations
.Established operating procedures for real time supervision
and control (monitoring operations) for example should include
1. Monitored system conditions
o Transmission facility flow
o Stuck breaker
o Actual voltage
o Post-contingency voltage
o Reserve conditions
o Stability limits
o Area control error
o System frequency
o Communication, computer, control and indication
facilities
o Neighboring systems
o System separation
o Over-generation
o Severe weather conditions
2. State definition for the different operating states for the
different system monitored conditions
o Normal state
o warning state
o Alert state
o Major emergency
o Restoration
3. State criteria for power system existing in underlined
operating state
o Pre-contingency flow criteria
o Post-contingency flow criteria
4. Actions of the TSO, transmission system owner and other
actors to power system state when
o State is declared by TSO
o State is declared by transmission system owner
o State is declared by generators and customers
III) New communication procedures based result of the new
communication systems and should include the following details
(non-exhaustive)
· When a communication system to be used and by who
· How should a communication system be used
· Aspects of the communication system to be used
· When communications should stop
For examples, when an Alert State or Major Emergency State
occurs: the TSO Shift Supervisor shall communicate with the affected
transmission owners to determine the nature of the problem and to make a
preliminary estimate of the assistance required. The Shift Supervisor shall
then notify all transmission owners via the Emergency Hot Line System that an
Alert State or Major Emergency State exists. After this notification, all
normal or routine calls on the direct dial telephones between the Shift
Supervisor and the transmission owners shall cease. These lines shall be used
only for communications between the Shift Supervisor and the affected
transmission owners. And then, when the Restoration State occurs: the Shift
Supervisor shall notify all transmission owners via the Emergency Hot Line
System that a Restoration State exists. After that notification, all normal or
routine calls on the Direct Dial telephones between the Shift Supervisor and
the transmission owners shall cease. These lines shall be used only by the
Shift Supervisor and the affected transmission owners to communicate
information about the restoration process. The transmission owners shall use
the Emergency Hot Line System to communicate completion of restoration steps to
the Shift Supervisor.
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