Sweden (EIFS 2018:2) ride-through requirements

Low-voltage ride-through, Frequency ride-through for Sweden. Every breakpoint below is read from the code itself, and carries the clause it came from — so you can check it, not just cite it.

2Envelopes
LVRT · FRTEvents
Transmission Connection level
LVRT

What is the low-voltage ride-through envelope for Sweden (EIFS 2018:2)?

The plant must ride through for any voltage that stays on or above this envelope. The envelope holds 0 pu from t = 0 to 200 ms; then ramps linearly from 0 pu at 200 ms to 0.85 pu at 2 s; then 0.85 pu from 2 s to 10 s; then 0.9 pu from 10 s onward — the last band the envelope defines, with no stated end time.

The clause states this boundary as a line; intermediate points are interpolated between its stated vertices.

Applies to Type D power park modules under EIFS 2018:2

Sweden (EIFS 2018:2) — low-voltage ride-through envelopeSweden (EIFS 2018:2) low-voltage ride-through envelope. The plant must ride through for any voltage that stays on or above the line; below it, the envelope no longer applies. Logarithmic time axis from 0.01 s to 50 s; linear voltage axis in per-unit. The first band applies from the instant of the event (t = 0). The envelope holds 0 pu from t = 0 to 200 ms; then ramps linearly from 0 pu at 200 ms to 0.85 pu at 2 s; then 0.85 pu from 2 s to 10 s; then 0.9 pu from 10 s onward — the last band the envelope defines, with no stated end time (drawn as an open dashed tail).Sweden (EIFS 2018:2) — low-voltage ride-through envelopenominal 1.00 pu0.010.11100.000.200.400.600.801.001.20Time from event start (s, log scale) · first band applies from t = 0Voltage (pu)0.9 puMUST RIDE THROUGHmust ride through on or above the lineopen — no stated end time
Low-voltage ride-through envelope for Sweden (EIFS 2018:2). Time runs on a logarithmic axis, so the ramp — a straight line in real time — only looks curved here. Scroll the chart sideways for the rest of the time axis →
Low-voltage ride-through breakpoints for Sweden (EIFS 2018:2)
From To Voltage Between the points
0 200 ms 0 pu Held flat
200 ms 2 s 0 → 0.85 pu Ramps linearly
2 s 10 s 0.85 pu Held flat
10 s no stated end 0.9 pu Held flat
The clause this came from

Energimarknadsinspektionens foreskrifter EIFS 2018:2 om faststallande av generellt tillampliga krav for natanslutning av generatorer - 3 kap. 36 § (kraftparksmodul av typ D), with 3 kap. 34 § (symmetrical/asymmetrical), 37 § (pre-fault operating point) and 40 § (200 ms three-phase fault case). The code defines a linear recovery ramp; the vertices are read from the clause and the chart draws the segment between them.

FRT

What is the frequency ride-through envelope for Sweden (EIFS 2018:2)?

The plant must ride through between the upper and lower bands. The upper (over-frequency) band holds 51.5 Hz from t = 0 to 30 min; then 51 Hz from 30 min onward — the last band the envelope defines, with no stated end time. The lower (under-frequency) band holds 47.5 Hz from t = 0 to 30 min; then 49 Hz from 30 min onward — the last band the envelope defines, with no stated end time.

Every breakpoint is stated in the clause cited below.

Applies to Type D power park modules under EIFS 2018:2

Sweden (EIFS 2018:2) — frequency ride-through envelopeSweden (EIFS 2018:2) frequency ride-through envelope. The plant must ride through for any frequency that stays between the lower and upper bands. Logarithmic time axis from 100 s to 10000 s; linear frequency axis in hertz. The first band applies from the instant of the event (t = 0). upper (over-frequency) band: holds 51.5 Hz from t = 0 to 30 min; then 51 Hz from 30 min onward — the last band the envelope defines, with no stated end time (drawn as an open dashed tail). lower (under-frequency) band: holds 47.5 Hz from t = 0 to 30 min; then 49 Hz from 30 min onward — the last band the envelope defines, with no stated end time (drawn as an open dashed tail).Sweden (EIFS 2018:2) — frequency ride-through envelopenominal 50 Hz10010001000020050020005000474849505152Time from event start (s, log scale) · first band applies from t = 0Frequency (Hz)51 Hz49 HzMUST RIDE THROUGHUpper band (over-frequency)Lower band (under-frequency)must ride through between the bandsopen — no stated end time
Frequency ride-through envelope for Sweden (EIFS 2018:2). Time runs on a logarithmic axis. Scroll the chart sideways for the rest of the time axis →

Upper limit

Frequency ride-through breakpoints for Sweden (EIFS 2018:2) — Upper limit
From To Frequency Between the points
0 30 min 51.5 Hz Held flat
30 min no stated end 51 Hz Held flat

Lower limit

Frequency ride-through breakpoints for Sweden (EIFS 2018:2) — Lower limit
From To Frequency Between the points
0 30 min 47.5 Hz Held flat
30 min no stated end 49 Hz Held flat
The clause this came from

Energimarknadsinspektionens föreskrifter EIFS 2018:2, 3 kap. 1 § (allmänna krav för kraftproduktionsmodul av typ A, B, C och D): '30 minuter inom frekvensområde 47,5–48,5 Hz; 30 minuter inom frekvensområde 48,5–49,0 Hz; obegränsad inom frekvensområde 49,0–51,0 Hz; 30 minuter inom frekvensområde 51,0–51,5 Hz'.

Beyond ride-through

Operating requirements beyond the envelopes.

The envelopes above are what Sweden (EIFS 2018:2) demands during a disturbance. The rows below are the same regime’s operating and fault-response requirements — reactive capability, frequency response, continuous operating range, ramp rate, RoCoF withstand and fault-current injection — each researched from the document its own row cites, separately from the plotted corpus. Every row carries its clause and a verbatim quote, so you can check it the same way.

Supplementary operating requirements for Sweden (EIFS 2018:2)
Requirement What the code states Clause
PPM reactive capability at connection point Reactive capability Q supply ≥ 1/3 of instantaneous active power at 90-102 % voltage; Q consumption ≥ 1/3 of instantaneous active power at 95-105 % voltage (minimum capability at the connection point, power park modules type C-D; default unless the network owner notifies other requirements) Binds power park modules (kraftparksmoduler) of types C and D at the connection point (anslutningspunkten); expressly a default that the owner of the network the installation is connected to may replace ('om inte innehavaren ... meddelar annan kravbild'). Basis is the instantaneous active power (den momentana aktiva effekten), not Pmax. Symmetric 1/3-1/3 for PPMs but with different voltage windows for supply (90-102 %) vs consumption (95-105 %); compare synchronous modules at 4 kap. 8-9 §§ EIFS 2018:2 (1/3 generation at 90-102 % U, 1/6 consumption at 95-105 % U) and offshore PPMs at 6 kap. 2-3 §§ (1/3 both). No U-Q envelope shape and no charge/discharge distinction is given. Storage applicability: not explicit — EIFS 2018:2 complements Regulation (EU) 2016/631 (RfG) and binds 'kraftproduktionsmoduler' (power-generating modules) types A-D; battery storage is never named, so any application to BESS runs only through the generation-scoped definitional chain (unclear for pure storage). 5 kap. 2 § EIFS 2018:2 (Krav för kraftparksmoduler av typ C och D) + 5 kap. 3 § EIFS 2018:2 (Krav för kraftparksmoduler av typ C och D)
The clauses this row cites

5 kap. 2 § EIFS 2018:2 (Krav för kraftparksmoduler av typ C och D) — “ Kraftparksmoduler av typ C och D ska i anslutningspunkten minst ha förmåga till generering av reaktiv effekt motsvarande en tredjedel av den momentana aktiva effekten inom spänningsintervallet 90–102 procent spänning i anslutningspunkten, om inte innehavaren av det nät till vilket anläggningen är ansluten meddelar annan kravbild. ” Translation: “ Power park modules of type C and D shall, at the connection point, have at least a capability to generate reactive power corresponding to one third of the instantaneous active power within the voltage interval 90–102 per cent voltage at the connection point, unless the owner of the network to which the installation is connected notifies a different set of requirements. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

5 kap. 3 § EIFS 2018:2 (Krav för kraftparksmoduler av typ C och D) — “ Kraftparksmoduler av typ C och D ska i anslutningspunkten minst ha förmåga till en konsumtion av reaktiv effekt motsvarande en tredjedel av den momentana aktiva effekten inom spänningsintervallet 95–105 procent spänning i anslutningspunkten, om inte innehavaren av det nät till vilket anläggningen är ansluten meddelar annan kravbild. ” Translation: “ Power park modules of type C and D shall, at the connection point, have at least a capability for a consumption of reactive power corresponding to one third of the instantaneous active power within the voltage interval 95–105 per cent voltage at the connection point, unless the owner of the network to which the installation is connected notifies a different set of requirements. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

LFSM-O: threshold and droop Frequency response LFSM-O frequency threshold 50.5 Hz; droop (statikfaktor) primary setting value 8 % (types A-D); automatic disconnection may not substitute for over-frequency power reduction Binds all power-generating modules types A, B, C and D. Per 3 kap. 6 § EIFS 2018:2 the LFSM-O active-power frequency-response reference for kraftparksmoduler (power park modules) is the maximum continuous power (den maximala kontinuerliga effekten); per 3 kap. 5 § the module shall continue operating at its minimum regulating level when that level is reached in LFSM-O. Threshold and droop are Sweden's national determinations within RfG Art 13(2) ranges. Storage applicability: not explicit — the clause binds 'kraftproduktionsmodul' (power-generating module) under Regulation (EU) 2016/631; BESS is never named, so applicability runs only via the generation-scoped definitional chain (unclear for pure storage). 3 kap. 3 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ A, B, C och D) + 3 kap. 4 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ A, B, C och D)
The clauses this row cites

3 kap. 3 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ A, B, C och D) — “ Kraftproduktionsmodul av typ A, B, C och D ska tillhandahålla reduktion av aktiv effekt som frekvenssvar vid begränsat frekvenskänslighetsläge – överfrekvens (LFSM-O), vid en frekvenströskel på 50,5 Hz. Automatisk bortkoppling av kraftproduktionsmodulen får inte användas som alternativ till en reduktion av aktiv effekt vid överfrekvens. ” Translation: “ A power-generating module of type A, B, C and D shall provide reduction of active power as frequency response in limited frequency sensitive mode – overfrequency (LFSM-O), at a frequency threshold of 50.5 Hz. Automatic disconnection of the power-generating module may not be used as an alternative to a reduction of active power at overfrequency. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

3 kap. 4 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ A, B, C och D) — “ Statikfaktorn för kraftproduktionsmoduler av typ A, B, C och D ska ha det primära inställningsvärdet 8 procent. ” Translation: “ The droop for power-generating modules of type A, B, C and D shall have the primary setting value 8 per cent. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

LFSM-U: threshold and droop Frequency response LFSM-U frequency threshold 49.5 Hz; droop (statikfaktor) 8 % (types C-D) Binds power-generating modules of types C and D (LFSM-U is not required of types A-B in EIFS 2018:2). Per 3 kap. 22 § EIFS 2018:2 the LFSM-U active-power frequency-response reference for kraftparksmoduler of types C and D is the maximum continuous power. Sweden chose 49.5 Hz, the outer edge of the RfG Art 15(2)(c) 49.8-49.5 Hz national-choice range. Storage applicability: not explicit — binds 'kraftproduktionsmodul' under Regulation (EU) 2016/631; BESS never named; applicability to storage only via the generation-scoped definitional chain (unclear for pure storage). 3 kap. 20 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ C och D) + 3 kap. 21 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ C och D)
The clauses this row cites

3 kap. 20 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ C och D) — “ Kraftproduktionsmodul av typ C och D ska tillhandahålla ökning av aktiv effekt som frekvenssvar vid begränsat frekvenskänslighetsläge – underfrekvens (LFSM-U), vid en frekvenströskel på 49,5 Hz. ” Translation: “ A power-generating module of type C and D shall provide increase of active power as frequency response in limited frequency sensitive mode – underfrequency (LFSM-U), at a frequency threshold of 49.5 Hz. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

3 kap. 21 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ C och D) — “ Kraftproduktionsmodul av typ C och D ska tillhandahålla ökning av aktiv effekt som frekvenssvar vid begränsat frekvenskänslighetsläge – underfrekvens (LFSM-U), med en statikfaktor av 8 procent. ” Translation: “ A power-generating module of type C and D shall provide increase of active power as frequency response in limited frequency sensitive mode – underfrequency (LFSM-U), with a droop of 8 per cent. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

FSM: droop range and deadband Frequency response FSM droop settable within 2-12 %; frequency-response deadband default setting ±100 mHz (types C-D) Binds power-generating modules of types C and D; per 3 kap. 23 § EIFS 2018:2, FSM capability is mandatory but FSM shall be activated only when ordered by the system responsible authority (den systemansvariga myndigheten, i.e. Svenska kraftnät). Companion FSM determinations in the same chapter: frequency-response insensitivity max 10 mHz (3 kap. 25 §); FSM active-power range 5-10 % of maximum continuous power (3 kap. 27 §); full active frequency response sustained for at least 15 minutes (3 kap. 28 §); initial activation delay less than 2 seconds for modules without inertia (3 kap. 29 §); FSM activation formalised in Figur 1 and Ekvationer 1-3 with the ±100 mHz deadband placing the response knees at 49.9/50.1 Hz. Storage applicability: not explicit — binds 'kraftproduktionsmoduler' under Regulation (EU) 2016/631; BESS never named; applicability to storage only via the generation-scoped definitional chain (unclear for pure storage). 3 kap. 24 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ C och D) + 3 kap. 26 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ C och D)
The clauses this row cites

3 kap. 24 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ C och D) — “ Kraftproduktionsmoduler av typ C och D ska för drift i frekvenskänslighetsläge (FSM) arbeta med en statikfaktor inom intervallet 2–12 procent. ” Translation: “ Power-generating modules of type C and D shall, for operation in frequency sensitive mode (FSM), operate with a droop within the interval 2–12 per cent. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

3 kap. 26 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ C och D) — “ Frekvenskänslighetsläge (FSM) ska ha ett dödband som grundinställning. Grundinställningen för dödbandet ska vara ±100 mHz. Se figur 1 samt ekvationer 1–3. ” Translation: “ Frequency sensitive mode (FSM) shall have a deadband as default setting. The default setting for the deadband shall be ±100 mHz. See Figure 1 and Equations 1–3. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

Frequency and voltage operating bands Continuous operating range Frequency (types A-D): 47.5-48.5 Hz for ≥ 30 minutes; 48.5-49.0 Hz for ≥ 30 minutes; 49.0-51.0 Hz unlimited; 51.0-51.5 Hz for ≥ 30 minutes. Voltage (types B-D): maintain active-power output within 90-105 % voltage at the connection point 3 kap. 1 § binds all power-generating modules types A-D and sets the shortest time periods the module must operate at off-nominal frequency without disconnecting (minimum-withstand times, not permissions to disconnect at exactly 30 min). 3 kap. 18 § binds types B, C and D for the voltage band at the connection point. Supplementary voltage-band determinations not quoted here: type D above 300 kV must additionally operate 105-110 % voltage for at least 60 seconds (3 kap. 33 §); offshore PPMs types A-D connected at 300-400 kV must operate 105-110 % voltage for at least 60 minutes (6 kap. 1 §); per 3 kap. 17 § the maximum capacity thresholds of RfG Art 5(2) Table 1 for the Nordic synchronous area apply to Sweden. Deliberately not extracted: the voltage fault-ride-through profiles (3 kap. 11-12 §§, 35-36 §§) — already on the site. Storage applicability: not explicit — binds 'kraftproduktionsmodul' under Regulation (EU) 2016/631; BESS never named; applicability to storage only via the generation-scoped definitional chain (unclear for pure storage). 3 kap. 1 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ A, B, C och D) + 3 kap. 18 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ B, C och D)
The clauses this row cites

3 kap. 1 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ A, B, C och D) — “ Den kortaste tidsperiod som en kraftproduktionsmodul av typ A, B, C och D ska kunna fungera inom frekvenser som avviker från nominellt värde utan att kopplas bort från nätet är: • 30 minuter inom frekvensområde 47,5–48,5 Hz • 30 minuter inom frekvensområde 48,5–49,0 Hz • obegränsad inom frekvensområde 49,0–51,0 Hz • 30 minuter inom frekvensområde 51,0–51,5 Hz ” Translation: “ The shortest period of time for which a power-generating module of type A, B, C and D shall be capable of operating within frequencies that deviate from the nominal value without being disconnected from the network is: • 30 minutes within the frequency range 47.5–48.5 Hz • 30 minutes within the frequency range 48.5–49.0 Hz • unlimited within the frequency range 49.0–51.0 Hz • 30 minutes within the frequency range 51.0–51.5 Hz ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

3 kap. 18 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ B, C och D) — “ Kraftproduktionsmodul av typ B, C och D ska kunna upprätthålla utmatning av aktiv effekt inom spänningsintervallet 90–105 procent spänning i anslutningspunkten. ” Translation: “ A power-generating module of type B, C and D shall be capable of maintaining output of active power within the voltage interval 90–105 per cent voltage at the connection point. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

PPM ramp and step-change capability Ramp rate Power park module must manage a power-control ramp rate of 100 %/minute (the p.6 column header reads only "Ändringshastighet [% / minut]"; the "% av nominell effekt" basis belongs to the adjacent Reglerområde column) (regulating range 85 % of nominal power, within the 15-100 % power range) and a production step change of 30 % within 15 s (within 49-51 Hz, in the 50-100 % power range) — capability minima, types C-D Binds power-generating modules of types C and D by technology class; the 'Kraftparksmodul' (power park module) table rows are the ones an inverter-based BESS would fall under if treated as a PPM. These are capability requirements the module must withstand/deliver in power control ('ska ... klara'), not caps on permitted ramping. Table columns for 3 kap. 31 §: Ändringshastighet [%/minut] = 100; Reglerområde [% av nominell effekt] = 85; Effektområde [% effekt] = 15-100 ('Med reglerområde avses ett effektintervall inom specificerat effektområde' — the regulating range is a power interval within the specified power range). Table columns for 3 kap. 32 §: Effektsteg [%] = 30; Inom tid [sekund] = 15; Effektområde [% effekt] = 50-100. No separate charge/discharge ramp values anywhere in the instrument. Separately, 3 kap. 9 § caps the active-power increase after automatic connection at max 10 % of nominal active output per minute when the connection-point frequency is 49.9-50.1 Hz (no increase permitted above 50.1 Hz, unrestricted below 49.9 Hz). Storage applicability: not explicit — binds 'kraftproduktionsmoduler'/'kraftparksmodul' under Regulation (EU) 2016/631; BESS never named; applicability to storage only via the generation-scoped definitional chain (unclear for pure storage). Scope: 3 kap. 9 § binds typ A, B och C (not D). 3 kap. 31 § EIFS 2018:2, tabell, rad 'Kraftparksmodul' (Allmänna krav för kraftproduktionsmodul av typ C och D) + 3 kap. 32 § EIFS 2018:2, tabell, rad 'Kraftparksmodul' (Allmänna krav för kraftproduktionsmodul av typ C och D)
The clauses this row cites

3 kap. 31 § EIFS 2018:2, tabell, rad 'Kraftparksmodul' (Allmänna krav för kraftproduktionsmodul av typ C och D) — “ Kraftproduktionsmoduler av typ C och D, och av följande teknik, ska vid effektreglering klara följande ändringshastigheter. […] Kraftparksmodul 100 85 15–100 ” Translation: “ Power-generating modules of type C and D, and of the following technology, shall in power control manage the following rates of change. […] Power park module 100 85 15–100 ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

3 kap. 32 § EIFS 2018:2, tabell, rad 'Kraftparksmodul' (Allmänna krav för kraftproduktionsmodul av typ C och D) — “ Kraftproduktionsmoduler av typ C och D, och av följande teknik, inom frekvensområde 49–51 Hz, ska klara följande stegändring av produktionen. […] Kraftparksmodul 30 15 50–100 ” Translation: “ Power-generating modules of type C and D, and of the following technology, within the frequency range 49–51 Hz, shall manage the following step change of production. […] Power park module 30 15 50–100 ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

RoCoF withstand RoCoF withstand RoCoF withstand up to 2.0 Hz/s, measured at the connection point and calculated over a 500 ms time period (types A-D) Binds all power-generating modules types A, B, C and D: the module shall remain connected and operate at rates of change of frequency up to 2.0 Hz/s. Measurement point (anslutningspunkten = connection point) and 500 ms calculation window are stated in the clause itself. Storage applicability: not explicit — binds 'kraftproduktionsmodul' under Regulation (EU) 2016/631; BESS never named; applicability to storage only via the generation-scoped definitional chain (unclear for pure storage). 3 kap. 2 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ A, B, C och D)
The clause this row cites

3 kap. 2 § EIFS 2018:2 (Allmänna krav för kraftproduktionsmodul av typ A, B, C och D) — “ En kraftproduktionsmodul av typ A, B, C och D ska förbli ansluten till nätet och fungera vid frekvensändringshastigheter upp till 2,0 Hz/s. Värdet på frekvensändringshastigheten ska vara uppmätt i anslutningspunkten och beräknas över en tidsperiod på 500 ms. ” Translation: “ A power-generating module of type A, B, C and D shall remain connected to the network and operate at rates of change of frequency up to 2.0 Hz/s. The value of the rate of change of frequency shall be measured at the connection point and calculated over a time period of 500 ms. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

Dynamic voltage support and post-fault recovery Fault-current injection No fast fault-current gain (k-factor), response time or negative-sequence value is determined in EIFS 2018:2; determined instead: PPM type C/D shall switch automatically to automatic voltage regulation and support with reactive power when voltage at the control point falls below 95 %, and PPM type B-D shall complete post-fault active-power recovery within 2 seconds, to within 5 % of pre-fault power, once connection-point voltage exceeds 90 % 5 kap. 5 § binds power park modules of types C and D: on a voltage dip below 95 % at the control point (reglerpunkten — note: not the connection point) the module must autonomously revert to automatic voltage regulation and inject reactive power; the second sentence makes the rule applicable when the network owner has assigned a reactive-power control mode other than automatic voltage regulation, and per 5 kap. 6 § the assigned mode may be resumed at the earliest 5 minutes after connection-point voltage recovers above 95 %. 5 kap. 1 § binds power park modules of types B, C and D for post-fault active-power recovery (2 s, 5 % tolerance, trigger U > 90 %). EIFS 2018:2 contains no k-gain, injection response time, negative-sequence treatment or reactive-vs-active priority rule for fast fault current anywhere (all six chapters searched); the RfG Art 20(2)(b)-(c) fast-fault-current specification is thus left to the relevant system operator in Sweden, not generally determined. Storage applicability: not explicit — binds 'kraftparksmoduler' under Regulation (EU) 2016/631; BESS never named; applicability to storage only via the generation-scoped definitional chain (unclear for pure storage). Note: 'reglerpunkt' occurs exactly once in the instrument against 39 occurrences of 'anslutningspunkt', and the release condition in 5 kap. 6 § reverts to the connection point. 5 kap. 5 § EIFS 2018:2 (Krav för kraftparksmoduler av typ C och D) + 5 kap. 1 § EIFS 2018:2 (Krav för kraftparksmoduler av typ B, C och D)
The clauses this row cites

5 kap. 5 § EIFS 2018:2 (Krav för kraftparksmoduler av typ C och D) — “ Vid spänningsfall i reglerpunkten som medför att spänningen understiger 95 procent ska en kraftparksmodul av typ C eller D automatiskt övergå till automatisk spänningsreglering och stödja spänningsfallet med reaktiv effekt. Detta gäller om innehavaren av det nät till vilket anläggningen är ansluten har anvisat ett annat reglerläge för reaktiv effekt än automatisk spänningsreglering. ” Translation: “ In the event of a voltage drop at the control point which causes the voltage to fall below 95 per cent, a power park module of type C or D shall automatically switch to automatic voltage regulation and support the voltage drop with reactive power. This applies if the owner of the network to which the installation is connected has assigned a reactive-power control mode other than automatic voltage regulation. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

5 kap. 1 § EIFS 2018:2 (Krav för kraftparksmoduler av typ B, C och D) — “ En återhämtning av aktiv effekt efter fel ska vara utförd inom 2 sekunder efter det att spänningen i anslutningspunkten överstiger 90 procent och till en effektnivå som avviker mindre än 5 procent från effektnivån omedelbart innan fel för kraftparksmoduler av typ B, C och D. ” Translation: “ A recovery of active power after a fault shall be completed within 2 seconds after the voltage at the connection point exceeds 90 per cent, and to a power level that deviates by less than 5 per cent from the power level immediately before the fault, for power park modules of type B, C and D. ” (Energimarknadsinspektionens föreskrifter om fastställande av generellt tillämpliga krav för nätanslutning av generatorer (EIFS 2018:2), accessed 2026-08-09)

Scope

Who does Sweden (EIFS 2018:2) bind, and since when?

Type D power park modules under EIFS 2018:2. No date of effect is published here — grid codes are reissued, so check the current issue before relying on it.

These figures are a reading aid, not legal advice. Grid codes are reissued: verify against the current edition before you design to them.

Curve data last checked against the code on — 66 standards, 130 envelopes, published by bess.engineer under CC BY 4.0.

Questions

Questions this page answers about Sweden (EIFS 2018:2)

Does Sweden (EIFS 2018:2) require ride-through, or only that the plant does not trip?
Ride-through. Every envelope on this page is a performance duty the plant must meet, not a protection-setting no-trip boundary — they are different obligations. That is what these curves are; they are not everything Sweden (EIFS 2018:2) contains. The requirement sentence under each chart says which side of the curve is the compliant one.
Are the numbers on this page taken from Sweden (EIFS 2018:2) itself?
Yes. Every breakpoint is read from the code, and each envelope carries the clause it came from, quoted in full under its chart — so you can check the figure against the standard rather than cite it from this page.
Which events are charted for Sweden (EIFS 2018:2)?
Sweden (EIFS 2018:2) is charted here with 2 envelopes — low-voltage ride-through, frequency ride-through (LVRT, FRT). No high-voltage envelope is charted here — check Sweden (EIFS 2018:2) itself before concluding it sets none.
Related

Ride-through, in context.

An envelope is a compliance boundary; understanding why it exists is a different question. The ride-through and grid-forming entries cover the engineering, and the Engineering Foundations course builds it from the physics up.

Elsewhere in Europe: Greece (ADMIE/IPTO RfG), Ireland (EirGrid), Italy (TERNA), Netherlands (TenneT), Norway (Statnett NVF 2025), Poland (PSE Wymogi 2025), and 13 more