BS EN 50549-1:2019 Requirements for generating plants to be connected in parallel with distribution networks Part 1: Connection to a LV distribution network – Generating plants up to and including Type B

BS EN 50549-1:2019 Requirements for generating plants to be connected in parallel with distribution networks Part 1: Connection to a LV distribution network – Generating plants up to and including Type B.
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. Fo dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 50549-2, Requirements for generating plants to be connected in parallel with distribution networks
– Part 2: Connection to a MV distribution network – Generating plants up to and including Type B
EN 60255-127, Measuring relays and protection equipment — Part 127: Functional requirements for over/under voltage protection (IEC 60255-127)
EN 61000-4-30, Electromagnetic compatibility (EMC) — Part 4-30: Testing and measurement techniques — Power quality measurement methods (IEC 61000-4-30)
HD 60364-1, Low-voltage electrical installations — Part 1: Fundamental principles, assessment of general charactenstics, definitions (IEC 60364-1)
HO 60364-5-551, Low-voltage electrical installations — Part 5-55: Selection and erection of electrical equipment — Other equipment — Clause 551: Low-voltage generating sets (IEC 60364-5-55 1)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use M standardization at the following addresses:
• IEC Electropedia: available at http://wwwelectropedia.org/
• ISO Online browsing platform: available at httpilwww.iso.org/obp
Note Terms and definitions are selected to achieve consistency with 1EV (d. wwwelectrooediaora) and
CENELEC terminology, recognizing that terms in COMMISSION REGULATION (EU) 20161631 may deviate
3.1 General
3.1.1 distribution network
AC electrical network, including closed distribution networks, for the distribution of electrical power from and to third parties connected to it, to and from a transmission or another distribution network, for which a DSO is responsible
Note 1 to entry: A distribution network does not include the ptoducers network.
3.1.2 closed distribution network
system which distributes electricity within an industrial, commercial or shared services site, that is geographically confined, and does not supply households customers (without excluding the option of a small number of households served by the system that have an employment or similar associations with the owner of the system)
Note I to entry: A closed distribution network will either be used to integrate the production processes of the network users for specific or technical reasons or distribute electricity pnrnanly to the operator of the closed distribution network or his related undertakings.
[SOURCe: Directive 20091721EC, article 28. modified)
3.1.3 distribution system operator DsO
natural or legal person responsible for the distribution of electrical power to final customers and for operating, ensuring the maintenance of and, if necessary, developing the distribution network in a given area
Note 1 to entry: As this document is applicable to distribution grids. DSO is used for relevant system operator according to article 2(13) of COMMISSION REGULATION 20161631.
Note 2 to entry: In some countries, the distribution network operator (DNO) fulfils the role of the DSO.
3.1.4 transmission system operator
natural or legal person responsible for operating, ensuring the maintenance of and, if necessary, developing the transmission system in a given area and, where applicable, its interconnections with other power systems. and for ensuring the long.term ability of the power system to meet reasonable demands for the transmission of electricity
3.1.5 responsib’e party
party, that according to the legal framework is responsible to define requirements or parameters according to COMMISSION REGLUALTION 2016/631 e.g. TSO, member state, regulatory authority
3.1.6 low voltage (LV) distribution network
electric distnbution network with a voltage whose nominal r.m.s. value is U S I kV
3.1.7 medium voltage (MV) distribution network
electric distribution network with a voltage whose nominal r.m.s. value is 1 kV < U s 36 kV
Note 1 to entry: Because of existing network structures, the upper boundary of MV cwi be different in some countries.
3.1.8 power system stability
capability of a power system to regain a steady state, characterized by the synchronous operation of the generating plants after a disturbance [SOURCE: IEV 603-03-01]
3.1.9 producer
natural or legal person who already has connected or is planning to connect an electricity generating plant to a distribution network.
3.1.10 producer’s network
AC electrical installations downstream from the pornt of connection operated by the poducer for internal distribution of electricity
Note 1 to entry: When the internal distnbution network is identical to an electrical network of a customer having his own generating plant, where one or more generating units are connected to this internal distribution network behind a point of connection, then this network may be also referred as prosumers network.
3.1.11 downstream
direction in which the active power would flow if no generating units, connected to the distribution network, were running
3.1.12 point of connection POC
reference point on the electric power system where the user’s electrical facility is connected
Note 1 to entry: For the purpose of this standard, the electric power system is the distribution network. [SOURCE: 1EV 617-04-01 modified]
3.1.13 operating in parallel with the distribution network
situation where the generating plant is connected to a distribution network and operating
3.1.14 temporary operation in parallel with the distribution network
conditions in which the generating plant is connected during defined short periods to a distribution network to maintain the continuity of the supply and to facilitate testing
3.1.15 nominal value
value of a quantity used to designate and identify a component, device, equipment, or system
Note to entry: The nominal value is generally a rounded value.
(SOURCE: 1EV 151-16-091
3.2 Plant, module and unit
3.2.1 generating module
either a generating unit of synchronous generating technology 01 the sum of all generating units of non-synchronous generating technology connected to a common point of connection induding all elements needed to feed electric power to the distribution grid
Note 1 to entry: In some documents this can mean a powel-generating module.
Note 2 to entry: Generating modules in the context of this document can be of type A or type B according to the definition of COMMISSION REGULATION 2016/631. articleS.
3.2.2 generating plant
sum of generating modules connected at one point of connection, including auxiliaries and all connection equipment
Note 1 to entry: In some documents this can mean a power-generating plant.
Note 2 to entry: This definition is intended to be used for verification of compliance to the technical requirements of this standard. It may be different to the legal definition of a plant.
3.2.3 generating unit
smallest set of installations which can generate electrical energy running independently and which can feed this energy into a distribution network
Note 1 to entry: In some documents this can mean a power-generating unit.
Note 2 to entry: For example, a combined cyde gas turbine (CCGT) consisting of a gas turbine and a steam turbine or an installation of an internal combustion engine (ICE) followed by an organic rankine cycle (ORC) machine are considered both as a single generating unit.
Note 3 to entry: II a generating unit is a combination of technologies leading to different requirements, this has to be resolved case by case.
Note 4 to entry: A electrical energy storage EES operating in electricity generatn mode and AC connected to the distnbubon network is considered to be a generating unit.
3.2.4 micro-generating plant
generating plant with generating units having nominal currents in sum not exceeding 16 A per phase
3.2.5 micro-generating unit
generating unit with nominal currents up to and including 16 A per phase
3.2.6 synchronous generating technology
technology where a generating unit is based on a synchronous machine which is directly coupled to an electiic power system.BS EN 50549-1 pdf free download.BS EN 50549-1:2019 Requirements for generating plants to be connected in parallel with distribution networks Part 1: Connection to a LV distribution network – Generating plants up to and including Type B