This document specifies 
– intelligent wireless sensor network (iWSN) from the perspectives of iWSN's system infrastructure and communications internal and external to the infrastructure, and 
– technical requirements for iWSN to realize smart electrical power substations. 
 dition 1.0 2020-10 INTERNATIONAL STANDARD colour inside Internet of things (IOT) – Wireless sensor network system supporting electrical power substation ISO/IEC 30144:2020-10(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright ？ 2020 ISO/IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, elec