Dictionary

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Search word
Czech power system (PS)
A complex of all the facilities and equipment necessary for electricity generation, transmission, transformation and distribution, including connecting and direct power lines, as well as metering, control, protection, information and telecommunications systems.
Czech transmission system (TS)
A mutually interconnected complex of 400kV and 220kV power lines and facilities and certain selected 110kV lines (specified in Annexes to Part VII of the Grid Code – TS facilities) used for electricity transfer throughout the Czech Republic and for interconnection with the power systems of neighbouring countries.
ČEPS dispatch control system
Technical support for dispatcher decision-making. The system provides on-line information delivered from the transmission system and power stations, allows the remote control of substations, voltage control and balancing electricity generation and consumption whilst complying with the schedule of exports from and imports to the Czech Republic and a number of other functions for dispatcher support.
Electricity quality
Key parameters for electricity quality assessment consist of voltage and frequency. Whilst the frequency value is identical at all points of the power system (approximately 50Hz), the voltage value may differ at different points. Frequency and voltage control at selected nodes is necessary to maintain the required electricity quality.
Electricity trader
A natural or legal person who holds a trading licence and purchases electricity for re-sale.
N-1 criterion
The basic security criterion of power system reliability. This criterion expresses the ability of the power system to maintain normal operation after the outage of any single network element (a line, transformer, generating unit etc.) with possible short-term local consumption constraints.
N-2 criterion
A higher level of system security, wherein the power system can withstand the outage of two network elements (a line, transformer, generating unit etc.). Following the connection of the Temelín and Dukovany NPPs to the network, the standard N-1 criterion was changed to the stricter N-2 criterion.
Ancillary services (AnS)
Services procured by ČEPS to provide system services. AnS consist of the reservation of regulation power at specified generating units in compliance with contracts with individual providers/suppliers (i.e. electricity generators). ČEPS purchases such services since the Company, under current legislation, is barred from owning electricity sources.
Auction
A non-discriminatory method for the allocation of available transfer capacity on a specific interconnector in the required direction and in compliance with published auction rules. A coordinated auction is conducted jointly by the transmission system operators of neighbouring transmission systems.
Automated dispatch control system
A system comprising technical and software tools for the real-time control of power system operation.

Number of records: 10