Hello, this is Mito from Rera Tech Inc.. At Rera Tech Inc., I am mainly in charge of wind observation.
In the previous article, we introduced the three main models of vertical lidar used in Japan as the first part of our discussion of types of vertical lidar for wind observation. In this second part, we will introduce two derivative models used for offshore wind observation.
Derived model with specifications to withstand heavy salt damage
The Windcube V2.1 and ZX300 are available in a number of derivative models designed for installation on offshore floating lidar systems (FLS) and for use in coastal areas such as breakwaters and beaches.
The specific product names are "Windcube V2.1 Offshore" and "ZX300M," which are designed to withstand heavy salt damage.
Table 1. VL Overview
The internal OS and remote monitoring system of both models are the same as their respective conventional models, but the appearance, weight, cable connector, etc. are different because the sealing and airtightness of the casing has been improved.
Derived model for winter snow damage prevention
In addition, a winter kit is also sold separately for the Windcube V2.1 and ZX300 to protect against snow damage in winter.
Table 2 Winter Kit
The Vaisala Winter kit for Windcube V2.1 is a box-shaped kit that covers the VL directly and has a built-in heater powered by AC power to melt snow that has accumulated on the VL.
It depends on the amount of snow, but even if there is no AC power, the top surface is designed with a slanted shape to allow snow to slide off, so it will still be more effective than when it is not installed.
On the other hand, the ZX Lindars Thermal jacket winter kit for the ZX300 is designed to reduce the drop in internal temperature caused by the outside air by wrapping the thermal jacket around the VL like a straw mat.
This lens does not have a built-in heater, but the lens surface of the VL itself is designed at an angle, allowing snow to slide off, so there is no need to melt snow on the lens surface.
Each VL has its own advantages and disadvantages, so it is necessary to consider the characteristics of each model. At Relatec, we use our observation track record and experience to propose VLs that suit your site environment.
In my next column, I will introduce the results of accuracy verification for each model and the decrease in accuracy when observing in complex terrain.
(Written by Toshinari Mito)
As wind condition consultants, Rera Tech Inc. will carry out optimal wind condition surveys that combine "observation" and "estimation" for wind power generation.
If you have a desired VL, we can create an observation plan based on that, so please feel free to contact us.