National Institute of Technology and Evaluation
Significant reduction in legal inspections of receiving and
substations through constant remote monitoring
~ On-site patrol inspection from once a week to once a month, annual power outage inspection from once a year to once every six years ~
The “Smart Security Promotion Committee”, whose secretariat is the National Institute of Technology and Evaluation [NITE, Chairman: Fumihiko Hasegawa, Head office: Nishihara, Shibuya-ku, Tokyo], is a corporation that uses IoT equipment. We have approved Meidensha’s “remote continuous monitoring system for extra-high voltage receiving and substations” as a smart safety technology that can replace conventional electrical safety technology. This technology is listed in the “Smart Safety Technology Catalog (Electrical Safety) 3rd Edition” and will be available on the NITE website from September 30, 2022.
Smart Security Technology Catalog
(This technology is published in Hogi 10002-P1 (Document 1.1) to Hogi 10002-P17 (Document 5).)
The committee has evaluated the validity of this system and confirmed that it ensures safety equal to or higher than the current security level and that it is highly economical. As a result, business operators will be able to reduce the frequency of on-site patrol inspections, which was normally required once a week, to once a month, and reduce annual inspections that accompany power outages once a year to once every six years. can be reduced.
Figure 1 Conceptual diagram of the monitoring system
In addition, usually, when changing inspection methods and inspection cycles for patrol inspections and annual power outage inspections, it is necessary to submit the safety regulations to the government (Ministry of Economy, Trade and Industry, Industrial Safety and Inspection Department) for acceptance. By utilizing the evaluation results in the government’s technical review, we were able to shorten the time required for administrative procedures.
NITE will continue to promote smart safety technology
awareness-raising activities for related industries, and will actively make proposals that will lead to more efficient administrative work and review of regulations.
About the Smart Security Promotion Committee
In the field of electrical safety, there are various issues such as aging deterioration of demand equipment, aging and shortage of human resources for electrical safety, typhoons and natural disasters. In order to solve these problems, NITE established the Smart Safety Promotion Committee at the request of the Ministry of Economy, Trade and Industry.
At the Smart Safety Promotion Committee, members consisting of academic experts and others will evaluate the substitutability, effectiveness, economic efficiency, etc. of the security management technology project that has been applied for. In addition, if there are factors that hinder the introduction and spread of highly evaluated smart security technologies, we consider countermeasures and make recommendations to the government and industry groups.
Figure 2 Positioning of the Smart Security Promotion Committee *Source: “Electrical Safety Field Smart Safety Action Plan” (Ministry of Economy, Trade and Industry)
https://www.meti.go.jp/shingikai/safety_security/smart_hoan/denryoku_anzen/20210430_action_plan.html Smart Security Promotion Committee
About Smart Security Technology Catalog
As a result of the evaluation by the Smart Safety Promotion Committee, those that are judged to be appropriate as smart safety technology are listed in the smart safety technology catalog and published on the NITE website. This catalog is intended to be used as a reference material when installers of electrical equipment consider introducing and promoting safety technology. This is the third project following the two projects below that were announced in July. Press release dated July 8, 2022 (first project)
“Published Japan’s first technology catalog for smart safety (electrical safety field)”
Press release dated July 29, 2022 (No. 2 project)
“Technology for detecting signs of high-voltage electrical accidents using IoT ‘Smart Safety Technology Catalog’ 2nd project released”
Smart Security Technology Catalog
About Meidensha’s “constant remote monitoring system for extra-high voltage substations”
Extra-high voltage receiving and transforming equipment has a large impact on companies and society due to power outages due to accidents and equipment troubles, so maintenance of daily or weekly inspections and annual inspections (including measurement and maintenance) Management ensures the soundness of the equipment. However,
inspections require a complete power outage, making schedule adjustments and preparation work difficult and labor intensive. In addition, the aging of electrical safety personnel and the shortage of human resources have become issues at electrical safety sites. It is expected to introduce and operate an effective and economical equipment monitoring system while ensuring
[ System overview ]
This system installs many cameras and various sensors in the power receiving and transforming equipment and automates constant
monitoring, allowing people and machines to share inspection work, reducing the amount of work required for on-site patrol inspections and annual power outage inspections. This is to ensure and improve the quality of electricity and safety while reducing the frequency of these inspections.
Figure 3 Examples of using surveillance cameras and mobile terminals Remote monitoring using surveillance cameras (including image recognition) and measuring devices, as well as the collection of collected data, reduces the frequency of on-site patrol inspections from once a week to once a month. ), a partial discharge detector (TEV sensor), etc., it is possible to reduce the power failure annual inspection from once a year to once every six years.
Fig. 4 Comparison of old and new inspection methods and frequency of daily patrol inspections
In addition, trend management of monitoring data from various measuring instruments and sensors makes it possible to detect signs of equipment failure and capture signs of insulation deterioration, which can prevent equipment troubles such as power outages.
Efforts to solve electrical safety issues at NITE
At NITE, in response to a request from the Ministry of Economy, Trade and Industry, in May 2020, in order to provide technical support for electrical safety administration (administrative activities to ensure safety in the design, maintenance, operation, etc. of electrical facilities). Established a new center. Utilizing the knowledge and experience that NITE has cultivated so far, in collaboration with the Ministry of Economy, Trade and Industry and related organizations, we will promote awareness-raising activities for new smart safety technologies and make proposals for reviewing regulations, etc., to maintain and improve electrical safety. We are working on various projects that contribute to
Business introduction of the NITE Power Safety Center
Efforts to introduce new technologies such as IoT and AI to improve safety and efficiency in industrial safety.
Explanation of smart security — https://nite-gov.note.jp/n/n91734ca4bbb3 【insulation】:
Insulation in electrical installations is the state in which current cannot flow. For example, in the case of a cable wire, the current flowing through the copper wire inside is insulated via a film, so even if the wire is touched, the current will not leak to the human body.
A partial discharge is a weak discharge. If there is a minute defect in the insulation of electrical equipment, the electric field will be concentrated in that part and partial discharge will occur.
Details about this release: