About substation comprehensive protection system
Thread Content
I would like to ask everyone, what are the requirements for the comprehensive protection system of substations of chemical companies? Which one is better, imported or domestic?
I think foreign equipment is better in terms of safety, reliability and economical operation of power grid. If we consider the price issue, there are also several domestic ones that are more affordable.
Which domestic ones are more useful?
What is the performance of the products of Luneng Intelligent, Nanjing Nari, and Zhuhai Wanlida?
Guodian Nurui Guodian Nan from Beijing Sifang Xu Ji are all very good
The specific requirements for Ethernet must be designed according to the design institute.
Generally speaking, when choosing comprehensive insurance for power systems, the top four domestic companies are the first choice.: Guodian Nanzi, Guodian Nari, Beijing Sifang, Xu Ji Electric. For general chemical companies, they can choose according to their own circumstances. At present, the technologies of domestic comprehensive insurance manufacturers are relatively mature and can be adopted. Of course, there are exceptions to special requirements, such as rectifier transformer protection in the chlor-alkali chemical industry, which not every comprehensive insurance manufacturer can meet.
Nowadays, relay protection manufacturers have relatively complete technology and can program and configure according to the protection logic provided by users, which is very convenient. Personally, I think the domestic NARI and XJ protection products are good and have relatively complete functions. Foreign ones include ABB, GE, ALSTOM, Siemens, etc., which are slightly higher in price. It mainly depends on the owner's requirements and financial affordability. Of course, benevolent people have different opinions! For reference only!
The foreign ones from Siemens and ABB are better, while the domestic ones from NARI and XJ Electric are pretty good.
Requirements for comprehensive protection systems: 1. Stable and reliable