Requirements for grid supporting inverter in relation with frequency and voltage support

Carina Lehmal; Ziqian Zhang; Herwig Renner; Robert Schürhuber

Requirements for grid supporting inverter in relation with frequency and voltage support

Carina Lehmal, Ziqian Zhang, Herwig Renner, Robert Schürhuber

Institute of Electrical Power Systems (4320)

Research output: Contribution to conference › Paper › peer-review

Abstract

This paper investigates the behavior of a medium-voltage
grid with a grid supporting inverter and ZIP load during
frequency as well as grid voltage fluctuations. During the
test cases the droop parameters, short circuit capacity of
the grid, parameters of the load and length of the cable
between the supplying grid and inverter-load system are
varied. The stable zones and limits are determined
respectively for the droop parameters. This allows the
selection of a stable point while enabling the inverter to
support the grid by compensating for grid frequency and
grid voltage changes. Dependencies between the droop
parameters and decreasing stability zones with increasing
length of the cable or decreasing short circuit ratio from
the grid were established. Modification of load
characteristics caused no significant effects.

Original language	English
Publication status	Published - 15 Jun 2023
Event	CIRED 2023: 27th International Conference & Exhibition on Electricity Distribution - Rom, Italy Duration: 12 Jun 2023 → 15 Jun 2023 https://www.cired2023.org/

Conference

Conference	CIRED 2023
Abbreviated title	CIRED 2023
Country/Territory	Italy
City	Rom
Period	12/06/23 → 15/06/23
Internet address	https://www.cired2023.org/

Keywords

Grid-supporting inverter
stability analysis
medium voltage grid
freqeuncy support

Cite this

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title = "Requirements for grid supporting inverter in relation with frequency and voltage support",

abstract = "This paper investigates the behavior of a medium-voltagegrid with a grid supporting inverter and ZIP load duringfrequency as well as grid voltage fluctuations. During thetest cases the droop parameters, short circuit capacity ofthe grid, parameters of the load and length of the cablebetween the supplying grid and inverter-load system arevaried. The stable zones and limits are determinedrespectively for the droop parameters. This allows theselection of a stable point while enabling the inverter tosupport the grid by compensating for grid frequency andgrid voltage changes. Dependencies between the droopparameters and decreasing stability zones with increasinglength of the cable or decreasing short circuit ratio fromthe grid were established. Modification of loadcharacteristics caused no significant effects.",

keywords = "Grid-supporting inverter, stability analysis, medium voltage grid, freqeuncy support",

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TY - CONF

T1 - Requirements for grid supporting inverter in relation with frequency and voltage support

AU - Lehmal, Carina

AU - Zhang, Ziqian

AU - Renner, Herwig

AU - Schürhuber, Robert

PY - 2023/6/15

Y1 - 2023/6/15

N2 - This paper investigates the behavior of a medium-voltagegrid with a grid supporting inverter and ZIP load duringfrequency as well as grid voltage fluctuations. During thetest cases the droop parameters, short circuit capacity ofthe grid, parameters of the load and length of the cablebetween the supplying grid and inverter-load system arevaried. The stable zones and limits are determinedrespectively for the droop parameters. This allows theselection of a stable point while enabling the inverter tosupport the grid by compensating for grid frequency andgrid voltage changes. Dependencies between the droopparameters and decreasing stability zones with increasinglength of the cable or decreasing short circuit ratio fromthe grid were established. Modification of loadcharacteristics caused no significant effects.

AB - This paper investigates the behavior of a medium-voltagegrid with a grid supporting inverter and ZIP load duringfrequency as well as grid voltage fluctuations. During thetest cases the droop parameters, short circuit capacity ofthe grid, parameters of the load and length of the cablebetween the supplying grid and inverter-load system arevaried. The stable zones and limits are determinedrespectively for the droop parameters. This allows theselection of a stable point while enabling the inverter tosupport the grid by compensating for grid frequency andgrid voltage changes. Dependencies between the droopparameters and decreasing stability zones with increasinglength of the cable or decreasing short circuit ratio fromthe grid were established. Modification of loadcharacteristics caused no significant effects.

KW - Grid-supporting inverter

KW - stability analysis

KW - medium voltage grid

KW - freqeuncy support

UR - https://www.cired2023.org/

M3 - Paper

T2 - CIRED 2023

Y2 - 12 June 2023 through 15 June 2023

ER -

Requirements for grid supporting inverter in relation with frequency and voltage support

Abstract

Conference

Keywords

Other files and links

Activities

CIRED 2023

Cite this