Message-ID: <4C9C61F6.6080903@o2.ie>
Date: Fri, 24 Sep 2010 09:31:50 +0100
From: Tony <ei8jk@o2.ie>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.9) Gecko/20100915 Thunderbird/3.1.4
MIME-Version: 1.0
To: rsgb_lf_group@blacksheep.org
References: <AANLkTi=-nEen23+ruaDeOnBG1M0uP-hrex+5vqegKJFS@mail.gmail.com> <2D8E4A32-1613-4D1F-97CC-336ED265738A@numeo.fr> <E87EE332567A41F195240ECA4CAE487D@Hugh>
In-Reply-To: <E87EE332567A41F195240ECA4CAE487D@Hugh>
Subject: Re: LF: Photovoltaic Installation
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


  Hello Hugh.

I have a wind turbine and an inverter which is an ordinary computer UPS, 
and it does give blanket noise all across LF, MF & HF. It's only when 
you get to VHF that it can't be heard.
I have no idea how far it radiates but I will test it out for you later 
and see how far away I can get before I lose the noise.

I have the advantage of course that I can switch it all off when I play 
radio.

Tony, EI8JK.


On 24/09/2010 08:53, Hugh_m0wye wrote:
> Greetings to the LF group,
> My neighbour informs me that she is intending to have photovoltaic 
> panels installed on her roof, in a scheme where she gets free 
> electricity (all subsidised by the government of course!)
>
> My concern is the possibility of high levels of interference generated 
> by the kW inverters needed to pump electricity back into the National 
> Grid. I would guess that such invertors probably operate kHz and might 
> be expected to interfere with LF and VLF reception. The wiring to all 
> the panels on the roof might act as a very good aerial!
>
> It also occurs to me that any lack of RF immunity to my transmissions, 
> in the new installation, might have dramatic consequences - I know 
> from studying electrical engineering at college that connecting a 
> generator to the grid with incorrect phase leads to a big bang!
>
> Has anyone any experience of such installations?
> Perhaps someone has one nearby and could comment on any EMC effects.
> 73
> Hugh
>
>
>