乌勒瓦尔医院

通过 DEIF 的解决方案从分散的无法控制负载状况的电力系统升级成全新可控并能远程监控的系统。

乌勒瓦尔医院对院区应用全新的应急电源系统

乌勒瓦尔医院通过 DEIF 的解决方案从分散的无法控制负载状况的电力系统升级成全新可控并能远程监控的系统。

急诊:电源系统

奥斯陆乌勒瓦尔医院的应急电源系统急需升级。作为奥斯陆大学医院(挪威最大的医院)的四个主要院区之一,乌勒瓦尔的百年历史建筑和分散的电力基础设施效率低下。许多建筑物内或附近都有中型发电机。对负载状况几乎没有控制。

“很难说明该系统以前有多大缺陷和多么糟糕。”乌勒瓦尔医院运营经理 Michal Kjerstad 说道。“以前断电时,我们必须抬头看看建筑物,查看窗户是否被点亮,如果点亮,就表示该建筑物有电,然后我们会以同样的方式检查下一栋建筑物。”

COWI的电子咨询工程师 Dag Olsbakk 解释说,主配电盘的结构基于继电器逻辑,没有配电盘是相同的。Dag 参与了乌勒瓦尔新应急电源系统的设计和执行。

COWIs-Dag-Olsbakk-inspects the-control-room
图:COWI 的 Dag Olsbakk(中间)与 DEIF 的 René Kristensen(左)和 Rikard Aker Svendsen 检查乌勒瓦尔应急电源系统的控制室。

搭桥手术

乌勒瓦尔已对部分建筑物进行了升级,并在 2000 年左右对使用 DEIF 控制器的应急发电机进行了临时升级。Dag Olsbakk 表示,他与 DEIF 的 René Kristensen 进行了沟通,后者就如何改造基础设施以涵盖乌勒瓦尔的南部(涵盖医院最关键的部分)提出了一些想法。自 2014 年起,COWI 和 DEIF 与乌勒瓦尔合作,在保持医院正常运行的同时建设了新的系统 – 就像为患者进行搭桥手术一样。 

四个 690 V 发电机和一个 2.2 MW 发电机提供应急电源。为获得最佳电源安全性,COWI 选择将 DEIF 的功率管理与 AGC-4 控制器搭配使用。“我们选择了一种可靠的电源,该电源可以在不受其他系统影响的 CAN 总线上进行通信。”Dag 说道。“它是分频段的,因此我们选择 AGC-4 控制器 。借此,我们可基于每个建筑物运行测试并拥有完全控制权,并可基于电网运行测试和同步。”

此外,DEIF 数字电压控制器 DVC310 可以调节电压,从而改善发电机组的性能。
 

“What you have now is a lot more control of each building. You can control the system much better. We have higher redundancy and safety in the backup power.”

Dag Olsbakk |

“It’s a significant upgrade,” he adds. “What you have now is a lot more control of each building. You can control the system much better. And we have higher redundancy and safety in the backup power.”

He says that for quick start-up, “We utilise close before excitation, starting up all four generators – synchronising and phasing in simultaneously – so we manage start-up power very safely.” If an error occurs and communication is lost, the installation splits itself up into sections so that the operator can isolate the point of failure and secure the supply to other sections.

An AGC-4 controller is installed in each building with an HMI screen, giving a full overview of the system, he says. “You can monitor the whole emergency backup power station from all buildings, so it gives you full control.” 

The-emergency-gensets-and control-room-at-Ullevl-Hospital
Image: The emergency gensets and control room at Ullevål Hospital.

 “What was probably the biggest step for us was not the emergency power park itself, but rather the power management control that we now have.”

Michal Kjerstad |

 

A healthy system

The project was complete at the end of 2017, but it’s still a work-in-progress, Dag Olsbakk says.

“Ullevål now has much greater control of its system, but we’re still working on lifting that control even higher. It’s been fun to be part of developing it with DEIF – sparring with someone as you challenge each other a little bit.”

Ullevål’s Michal Kjerstad says that while the new system is so much better physically, it’s not exactly the best part.

“What was probably the biggest step for us was not the emergency power park itself, but rather the power management control that we now have,” Michal says. “It’s very good, and the fact that we can be in any of the buildings and still have full control of the system is just amazing.”

Michal’s team no longer needs to go from building to building and look up at the windows for light during a power outage. “Today we just look at a PC monitor and check up on those that have lost power and go straight to them.”

He says it also simplified Ullevål’s generator testing. “We no longer have to drive around with connecting cables. Now we stand in a heated room and touch a PC screen, testing the generators the exact way we need to. Whether it’s phasing onto the grid in each building or testing to a load point. We have every option available, so that is very, very good.”

Facts

DEIF supplied AGC-4 Automatic Genset Controllers and DVC310 Digital Voltage Controllers to the emergency power system at Ullevål Hospital. Read more about DEIF’s land power solutions.

 

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Can I help you?

René Kristensen, Critical Power System Specialist - Accredited Tier Designer

+45 9614 5706 |