丹麦气候、能源和供应部已批准Energinet公司的申请，即更换一条穿过连接丹麦和瑞典的天然气管道的海底电缆。
获批后，Energinet现在可以开始该项目，以取代在通过Öresund的400 kV电缆连接上的2号系统，因为目前的电缆已有37年的历史，并且“状况不佳”。
该电缆是名为“Öresund连接”项目的一部分，该项目包括连接丹麦新西兰和瑞典南部的两个132千伏和两个400千伏连接。
400 kV系统1由Svenska Kraftnät所有，并于2020年更新，而400 kV系统2由Energinet所有。这种电缆的预期寿命为40年。
据悉，该项目对丹麦东部电力系统的功能和运营至关重要，并确保新西兰能够与北欧地区的其他地区同步运行。
System 2海缆最近一次损坏是在2019年，正如Energinet报告的那样，故障降低了连接的容量，并意味着社会经济损失。
整个更换项目的总预算为4.86亿丹麦克朗(6520万欧元)。
Energinet项目经理Per Obbekær表示：“我们正在将系统1的更换经验转化为系统2的更换，因为还有许多相同的挑战。”。
“这些挑战尤其与海床的组成以及这一地区的海峡交通繁忙有关。我们很高兴第4条现在已经到位，这样我们就可以开始这一极其重要的电缆连接了。”
在丹麦，三条新电缆将首先埋在陆地上，长度约为1公里，位于Skibsrupgård的变电站和海岸之间。瑞典方面也将进行同样的工作，陆地上的电缆将连接到Kristinlund的变电站。
然后，三条新的海底电缆将铺设在圣雷海峡上，与目前的路线大致相同，之后将连接陆地和海底电缆。一旦新的连接开始工作，旧的电缆就会被拆除。
Energinet于2022年夏天开始进行可行性研究。瑞典预计将于2025年1月获得批准，随后Svenska Kraftnät于2025年4月做出投资决定，以便在2025年7月开始施工。
如果一切按计划进行，新的连接可以在2026年11月投入使用，该项目预计将在2027年6月完成。
The Danish Ministry of Climate, Energy and Supply has approved Energinet’s application for the replacement of a submarine cable that passes across Øresund connecting Denmark and Sweden.
With the approval in place, Energinet can now begin the project to replace System 2 on the 400 kV cable connection across Øresund as the current cable is 37 years old and “in poor condition”.
The cable is part of the project named the Øresund connection which includes a total of two 132 kV and two 400 kV connections that link Denmark’s Zealand to southern Sweden.
System 1 of 400 kV is owned by Svenska Kraftnät and was renewed in 2020, while System 2 of 400 kV is owned by Energinet. The expected lifetime of this type of cable is 40 years.
The project is said to be absolutely central to the function and operation of the Eastern Danish electricity system in particular and ensures that Zealand can be run synchronously with the rest of the Nordic region.
The System 2 connection was most recently damaged in 2019, and, as Energinet reports, a breakdown reduces the capacity of the connection and implies socio-economic loss.
The entire replacement project has a total budget of DKK 486 million (€65.2 million).
“We are taking our experience with the replacement of System 1 to the replacement of System 2, because there are many of the same challenges,” said Per Obbekær , Project Manager at Energinet.
“The challenges are particularly linked to the composition of the seabed and the fact that the strait on this part of Øresund is heavily trafficked. We are pleased that clause 4 is now in place, so that we can get started on this extremely important cable connection.”
In Denmark, three new cables will first be buried onshore over a stretch of approximately 1 kilometer between the transformer station in Skibstrupgård and the coast. The same will be done on the Swedish side, where the cables on land will be connected to the transformer station in Kristinelund.
Three new submarine cables will then be laid across the Øresund, roughly the same as the current route, after which the land and submarine cables will be connected. Once the new connection goes into operation, the old cables will be removed.
Energinet started the feasibility studies in the summer of 2022. A Swedish approval is expected in January 2025, followed by an investment decision by Svenska Kraftnät in April 2025, so that construction work can start in July 2025.
If everything goes according to schedule, the new connection can be commissioned in November 2026 and the project is expected to be completed in June 2027.
