ACREL AC energy meter’s Application in PV system in Bulgaria
發布時間：2021-10-14瀏覽次數：1128返回列表
Abstract: This paper introduces the application of ackry APM series AC meter in the AC side of Bulgarian photovoltaic system. It is mainly used to measure the current in the photovoltaic system, and cooperate with the transformers to measure, communicate and co
1.Project Overview
The company is located in Bulgaria. The company is mainly engaged in the design / installation, co
2.APM Series Energy Meters
APM series power meters of ACREL are power meters that are designed according to IEC standards and synchro
APM series meters have full power measurement, energy statistics, analysis of power quality and network communications and other functions, are mainly used for comprehensive mo
This series of meters use a modular design, with a rich function of the external DI / DO module, AI / AO module, event recording (SOE) module with T-Flash (TF) card, network communication module, Temperature and humidity measurement module, can achieve full power measurement of electrical circuit and mo
3.Type and Function Des
4.Technical parameters
5.Requirements from Customer
terms of reference from grid supplier:
（1）mo
（2）switching relay output at overvoltage: 2 steps:
Step 1: 110% of Unominal or 253V - delay 60 seco
Step 2: 115% of Unominal or 264V - delay 0.1s;
（3）switching relay output at undervoltage:
1-step; 80% of Unominal or 184V - delay 0.2s; Range of settings: U: 10- of Unominal, step not listed, maybe 1V ot 1%; Delay: 0.05 s to 3s, step - not listed, maybe 1s;
（4）switching relay output at overfrequency
1-step; 50.5Hz - delay 0.1s; Range of settings: F: 50-52.5Hz, step 0.1Hz; Delay: 0.1-0.5s, step - maybe 0.1s;
（5）switching relay output at overfrequency
1- step; 47.5Hz - delay 0.1s; Range of settings: F: 47.5-50Hz, step 0.1Hz; Delay: 0.1-0.5s, step - maybe 0.1s;
（6）Delay for recovering. When DO is on by some of previous reasons, there should be time delay after grid parameter(s) are back in nominal range(s). Time range 1-60s, step 1s
（7）Additio
7.1 When Unominal is lower than 60-70%, under and overfrequency mo
7.2 When overfrequency/underfrequency is happened - the DO should not be recovered automatically, it should wait for some kind of manual/remote restore.
The above 7 items are the special needs of customers for the purchased products. Except that some requirements in point 7 cannot meet the needs of customers, other needs can be met. Basically solved the needs of customers.
6.Installation Picture
Bibliography
1.Solutions For Enterprise Micro-grid System 2021.04
