安科瑞 陳聰

 ACREL AC energy meter’s Application in PV system in Bulgaria

摘要：本文介紹了安科瑞APM系列交流電表在保加利亞光伏系統(tǒng)交流側(cè)的應(yīng)用。主要用于光伏系統(tǒng)中的電流的計(jì)量，配合互感器對電路系統(tǒng)進(jìn)行計(jì)量、通訊和控制等。

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 control the circuit system.

1.項(xiàng)目概述Project Overview

該公司位于保加利亞，公司主要在保加利亞及周邊國家從事小型光伏發(fā)電中心項(xiàng)目的設(shè)計(jì)/安裝施工/維護(hù)等業(yè)務(wù)。客戶想要使用交流電表APM801、APM810等和互感器，用于光伏系統(tǒng)交流側(cè)電流電壓的監(jiān)測計(jì)量、通訊以及利用APM電表的開關(guān)量功能進(jìn)行控制。

The company is located in Bulgaria. The company is mainly engaged in the design / installation, construction / maintenance of small photovoltaic power generation center projects in Bulgaria and surrounding countries. The customer wants to use AC meters apm801, apm810 and mutual inductors for monitoring, metering and communication of current and voltage at the AC side of photovoltaic system, and control by using the switching value function of APM meter. 

2.APM系列儀表簡介APM Series Energy Meters

ACREL的APM系列功率表是根據(jù)IEC標(biāo)準(zhǔn)設(shè)計(jì)并與技術(shù)同步的功率表。

APM系列電能表具有全功率測量、電能統(tǒng)計(jì)、電能質(zhì)量分析和網(wǎng)絡(luò)通信等功能，主要用于供電網(wǎng)絡(luò)質(zhì)量的綜合監(jiān)測。

本系列儀表采用模塊化設(shè)計(jì)，具有豐富的外部DI/DO模塊、AI/AO模塊、帶T-Flash（TF）卡的事件記錄（SOE）模塊、網(wǎng)絡(luò)通信模塊、溫濕度測量模塊功能，可實(shí)現(xiàn)電路全功率測量和開關(guān)狀態(tài)監(jiān)測，具有以太網(wǎng)接口的雙RS485可實(shí)現(xiàn)RS485主站的數(shù)據(jù)拷貝，無需進(jìn)行數(shù)據(jù)交換。PROFIBUS-DP接口可實(shí)現(xiàn)高速數(shù)據(jù)傳輸和聯(lián)網(wǎng)功能。

APM series power meters of ACREL are power meters that are designed according to IEC standards and synchronized with international advanced technology.

APM series meters have full power measurement, energy statistics, analysis of power quality and network communications and other functions, are mainly used for comprehensive monitoring of the quality of power supply network.

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 monitoring of switch status, Dual RS485 with Ethernet interface can realize data copying of RS485 master station, eliminating the need for data switching exchange. PROFIBUS-DP interface can realize high-speed data transmission and networking function.

3.型號及功能介紹Type and Function Description

4. 技術(shù)參數(shù)Technical parameters

5.客戶特殊需求  Requirements from Customer

電網(wǎng)供應(yīng)商要求：

(1) 監(jiān)控電壓：L1-N、L2-N、L3-N。非標(biāo)稱 = 230V

(2) 過壓時切換繼電器輸出。分為兩步，

    第 1 步：110% 非標(biāo)稱或 253V - 延遲 60 秒（s）；

    第2步，115% 的非標(biāo)稱或 264V - 延遲 0.1s；設(shè)置范圍： U：非標(biāo)稱的 100-140%，未列出步驟，可能是 1V 或 1%；延遲0.05s 到 60s，未列出步驟，可能 1s；      

(3) 欠壓時切換繼電器輸出：

第①步；非標(biāo)稱電壓或 184V 的 80% - 延遲 0.2s；設(shè)置范圍： U：非標(biāo)稱電壓的 10-100%，未列出步驟，可能是 1V 或 1%；延遲0.05 s 到 3s，步驟未列出，可能為 1s；

(4) 過頻時切換繼電器輸出：

    第①步； 50.5Hz——延遲0.1s；設(shè)置范圍：F：50-52.5Hz，step 0.1Hz；延遲

(5) 超頻時切換繼電器輸出

(6) 恢復(fù)延遲。由于先前的一些原因，當(dāng)DO打開時，在網(wǎng)格參數(shù)回到標(biāo)稱范圍后應(yīng)該有時間延遲。時間范圍1-60秒，step 1秒

(7) 附加設(shè)置。(如果可能的話)。

   7.1.當(dāng)非標(biāo)稱值低于60-70% 時，可禁用低頻和超頻監(jiān)測;

   7.2. 當(dāng)發(fā)生超頻/低頻時 -- DO不應(yīng)該自動恢復(fù)，它應(yīng)該等待手動/遠(yuǎn)程等方式恢復(fù)。

terms of reference from grid supplier:

（1）monitoring voltages: L1-N, L2-N, L3-N. Unominal = 230V;

（2）switching relay output at overvoltage: 2 steps:

 Step 1: 110% of Unominal or 253V - delay 60 seconds (s) ;

 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: 10-100% 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）Additional settings. (If they are possible).   

7.1 When Unominal is lower than 60-70%, under and overfrequency monitoring can be disabled

7.2 When overfrequency/underfrequency is happened - the DO should not be recovered automatically, it should wait for some kind of manual/remote restore.

上述7點(diǎn)為客戶對所采購產(chǎn)品的特殊需求，除第七點(diǎn)中部分要求不能滿足客戶外，其余需求都能滿足。基本完好解決了客戶的需求。

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.安裝圖片Installation Picture

參考文獻(xiàn) Bibliography

1.Solutions For Enterprise Micro-grid System 2021.04