380 kV line Geertruidenberg – Eindhoven
The 380 kV Geertruidenberg – Eindhoven line is a three-circuit overhead line for three-phase high-voltage transmission between the Geertruidenberg and Eindhoven substations in the Dutch province of Noord-Brabant . The 63.6 km long extra-high voltage connection is operated at 380 kV and was the first 380 kV line in the Netherlands when it was built in the 1960s. A nationwide high-voltage ring with connections to the neighboring countries of Germany and Belgium developed from this .
business
course
The direction of the line is northwest-southeast. It begins at the Geertruidenberg 380/150 kV substation, which serves as the switchgear for the nearby Amercentrale coal-fired power station , and heads away to the east, at the second mast the direction changes with an additional tension field to the south, past the Geertruidenberg 150 kV switchgear Zuid. Then the 150 kV Geertruidenberg-Zuid-Tilburg-West line runs parallel to it and runs north and east around Tilburg . After Tilburg, the A58 is crossed twice and the A 2 north of Best . In the northern city area of Eindhoven the direction changes from east / southeast to south, crossing the A50 . In the east of Eindhoven the line ends in the 380/150 kV substation Eindhoven-Oost.
Masts
The line is laid on masts with a very unusual design. While most of the 380 kV connections in the Netherlands are two-circuit, the masts of this line carry three 380 kV circuits (3 × 1.645 MVA). The masts are designed as a double lattice construction with three trusses in a barrel mast arrangement. The three circuits are located on the outside at the ends of the traverse and in the middle between the two masts. To avoid the risk of strong winds turning the insulators towards the mast, which would result in a short circuit across the steel structure, the insulators in the middle circuit are arranged in a V shape.
The total of 181 masts (mast numbering 1–180, mast 2 is counted twice as 2A and 2B) are on average around 60 meters high, which makes them eye-catching landmarks. Because of their height and their wide base, they are also known as Kleerkast ( wardrobe ).
history
Management from 1933
The first line between Geertruidenberg and Eindhoven was built in 1933 by Provinciale Noord-Brabantse Electriciteits Maatschappij (PNEM) and was operated with a voltage of 150 kV. It served as a supplement to a two-circuit ring network in the province of Noord-Brabant, which was originally operated with 50 kV. The construction of this line was decided as early as 1929 in order to distribute capacities from the Dongecentrale power plant near Geertruidenberg, which was built in 1919 and expanded in 1930 . The transformer station in Eindhoven at that time was located in the northern part of Woensel and connected the 150 kV with the 50 kV network.
This line was laid on barrel masts which were on average 30 m ( guy masts ) or 31.5 m ( support masts ) high and were 250 m apart. Two 51.5 m high guy masts were used to cross the Wilhelminakanal . As with many lines in Germany from this period, guy masts were used on both sides of the railway lines in the Netherlands. The conductor cables for 150 kV consisted of copper wire with a cross-sectional area of 150 mm², and an earth cable was laid on the top of the mast . The route of this line essentially corresponded to that of the later 380 kV line, however, due to the lower population at the time, it was much straighter.
In 1960 the conductor cables were replaced by the design that is common today, a steel core on the inside for strength and sheathed on the outside with aluminum wire and as a bundle conductor , and an additional cross member for two earth cables was added. In the course of the construction of the 380 kV Geertruidenberg station, the course of the line at the north-western end was changed. In 1985 the section from there to Tilburg was replaced by a line with different masts, the section between Tilburg and Best is still in operation today.
Head of 1967
A 380 kV network, which served as the highest voltage level in the initially Western European network, was set up after the Second World War from the 1950s. The first lines of this voltage went into operation in 1952 in Sweden ( Harsprånget - Hallsberg ) and in 1957 in Germany ( Rommerskirchen - Hoheneck ). Plans for a Dutch 380 kV network had existed since the early 1960s.
Starting in 1965, the PNEM planned three line connections from Geertruidenberg and the Amercentrale coal-fired power station built there in 1952 to connect the south-west of the country and the province of Noord-Brabant to the extra-high voltage network. The lines were planned:
- Geertruidenberg – Eindhoven (three circles)
- Geertruidenberg – Krimpen (double circle)
- Geertruidenberg – Maasbracht (two-circle)
A coupling line to the German high-voltage network of RWE via the Oberzier substation was also planned via the Maasbracht substation .
The Geertruidenberg – Eindhoven line was intended as a three-circuit line from the start in order to have capacities available for a possible expansion of the Amercentrale. Two circuits are part of the otherwise continuous two-circuit transmission network in the Netherlands, the additional third for the distribution of energy in the region.
The first mast for this line was erected near Tilburg in October 1966. After a year of construction, it was completed in November 1967 and was initially provisionally put into operation with a voltage of 150 kV. Only when the 380 kV substations in Geertruidenberg and Eindhoven were completed in 1969 was it switched to this voltage.
In the 1970s, the remaining connections were also built from Geertruidenberg and connected to the German and Belgian power grid. A nationwide 380 kV ring and an additional one around Rotterdam were then built in sections by 1996 .
Web links
Individual evidence
- ↑ a b c A.J. Börger: Hoogspanningslijnen in Noord-Brabant - Masten van de PNEM. (PDF) Retrieved August 19, 2018 .