交流三相表電表在越南光伏的應(yīng)用

安科瑞 陳聰

Application of Acrel AC Three Phase Energy Meter in Vietnam Solar System

摘要:本文介紹了PZ96L和AMC96L在越南光伏逆變器上的應(yīng)用。目前，電網(wǎng)公司通常要求光伏并網(wǎng)系統(tǒng)為不可逆流發(fā)電系統(tǒng)，即光伏并網(wǎng)系統(tǒng)所發(fā)的電由本地負(fù)荷消耗，即自發(fā)自用。在并網(wǎng)發(fā)電和儲(chǔ)能系統(tǒng)中，由于外部環(huán)境是不斷變化的，為了防止光伏并網(wǎng)系統(tǒng)逆向發(fā)電，系統(tǒng)需要進(jìn)行逆流檢測(cè)，通過(guò)實(shí)時(shí)監(jiān)測(cè)配電變壓器低壓出口側(cè)的功率信號(hào)來(lái)調(diào)節(jié)系統(tǒng)的發(fā)電功率，從而達(dá)到光伏并網(wǎng)系統(tǒng)的防逆流功能。

Abstract:This article introduces the application of PZ96L and AMC96L in Vietnam photovoltaic inverters. Right now, grid companies usually require photovoltaic grid-connected systems to be irreversible , that is, the electricity generated by photovoltaic grid-connected systems is consumed by local loads, and excess electricity is not allowed to supply to the grid. The system can regulate power generation in order to prevent the photovoltaic grid-connected system from generating reverse power.

1.項(xiàng)目概述 Project overview:

一家做光伏發(fā)電的公司，在確認(rèn)了我司PZ96L和AMC96L的協(xié)議可以跟他們目前使用的太陽(yáng)能逆變器對(duì)接后，選擇購(gòu)買(mǎi)這兩款表來(lái)作為光伏交流部分的電量統(tǒng)計(jì)，來(lái)確保不會(huì)把光伏產(chǎn)生的電流輸送向國(guó)網(wǎng)。  

The photovoltaic power generation company in Vietnam, after confirming that our company’s PZ96L and AMC96L protocols can be connected to their current solar inverters, they chose to purchase these two models as the electricity statistics of the photovoltaic AC part to ensure that the electricity generated by photovoltaic will not be sent to the state grid.

系統(tǒng)拓?fù)洌篠tructure

光伏防逆流解決方案：Solution for PV anti-backflow

光伏直流耦合儲(chǔ)能解決方案 Solution for PV DC coupled energy storage

光伏交流耦合儲(chǔ)能解決方案 Solution for photovoltaic AC coupled energy storage

2.相關(guān)產(chǎn)品：Product Selection

防逆流 Anti-reflux

產(chǎn)品特點(diǎn)：Functions

雙向計(jì)量光伏系統(tǒng)的發(fā)電量，計(jì)量上網(wǎng)電量和用電量

250ms數(shù)據(jù)刷新率

開(kāi)口式互感器，支持300A電流。

通過(guò)RS485和并網(wǎng)逆變器或儲(chǔ)能逆變器通訊，實(shí)現(xiàn)防逆流功能及充放電的邏輯控制。

Measure power generation and the use of electricity,

Data refresh rate: 250ms,

Split core CT, 300A current,

Communication: RS485 and grid-connected inverter or energy storage inverter

證書(shū)：Certificate

AGF-AE-D：

ACR10R：

AMC96L

產(chǎn)品特點(diǎn)：

PZ系列電能表，采用交流采樣技術(shù)，可同時(shí)測(cè)量三相電網(wǎng)電氣參數(shù)，如電流、電壓、功率、電能等直接或間接的。可用于就地顯示，與控制設(shè)備連接構(gòu)成測(cè)控系統(tǒng)。配備RS-485通訊口，采用兼容的Modbus-RTU協(xié)議，儀表可將電參量信號(hào)轉(zhuǎn)換為標(biāo)準(zhǔn)模擬量輸出，具有四路（兩路）切換輸入/兩路切換輸出。

PZ Series electric energy meters, adopting AC sampling technology, can measure many three phase grid electrical parameters such as current, voltage, power, electric energy etc. directly or indirectly. It may be used for local display, and connected with the control equipment to form measuring and controlling system. Fitted with RS-485 communication port, adopting compatible Modbus-RTU protocol, meters can switch electric parameter signal into standard  analog output, with four-channel (two-channel) switching input / two-channel switching output.

根據(jù)不同的需求，通過(guò)面板上的按鍵，可以對(duì)變比、報(bào)警、通訊等電氣參數(shù)進(jìn)行設(shè)置和控制。 PZ系列儀表具有較高的性價(jià)比，可以簡(jiǎn)單地替代傳統(tǒng)的電換能器和測(cè)量?jī)x表。該電表作為一種的智能化、數(shù)字化前端采集元件，廣泛應(yīng)用于各種控制系統(tǒng)、SCADA系統(tǒng)和能源管理系統(tǒng) 

Based on different requirements, by keys on the faceplate, electric parameters for transformation ratio, alarm, communication etc. can be set up and controlled. PZ series meters have extra high price performance ratio, can simply replace traditional electric transducer and measuring meters .As an advanced intelligent, digital front end acquisition component, this electric meters have widely used in various control system, SCADA system and energy source management system.

DJSF1352-RN直流計(jì)量 DJSF1352-RN DC Energy Meter

DJSF1352/RN

產(chǎn)品特點(diǎn)：Functions

精度1級(jí)，帶±12V 電壓輸出用于霍爾傳感器供電

紅外通訊接口和RS485通訊接口，Modbus-RTU和645規(guī)約

導(dǎo)軌結(jié)構(gòu)，4模體積小巧方便安裝

支持分流器或霍爾傳感器輸入方式

Accuracy: 1, voltage output: ±12V

Communication: infrared and RS485 communication, Modbus-RTU and 645 protocol

DIN rail installation

Support hall sensor or shunt input

3.集中式光伏解決方案Centralized PV solutions

應(yīng)用說(shuō)明：Application

在太陽(yáng)能光伏發(fā)電系統(tǒng)中，智能光伏匯流箱減少了太陽(yáng)能光伏電池陣列與逆變器之間的連線。智能光伏匯流箱可以監(jiān)測(cè)光電池陣列中電池板運(yùn)行狀態(tài)，組串電流，防雷器狀態(tài)、直流斷路器狀態(tài)。裝置帶有RS485接口可以把測(cè)量和采集到的數(shù)據(jù)和設(shè)備狀態(tài)上傳。

In the solar PV power generation system, the smart PV combiner box reduces the connection between the solar PV cell array and the inverter. The box can monitor the operating status of the solar panels, lightning protector and DC circuit breaker. With RS485 interface, the device can upload the measured and collected data and equipment status.

系統(tǒng)拓?fù)洌篠tructure

4.相關(guān)產(chǎn)品：Product Selection

1.AGF系列匯流采集裝置 AGF Series Confluence Acquisition Device

產(chǎn)品特點(diǎn)：Functions

一次電流采用穿孔方式接入，可達(dá)20A，穿孔方式接入，安裝方便，安全性高

帶3 路開(kāi)關(guān)量狀態(tài)監(jiān)測(cè)，可以對(duì)匯流箱內(nèi)的防雷器、斷路器狀態(tài)進(jìn)行監(jiān)控

具有內(nèi)部測(cè)溫功能，可實(shí)時(shí)監(jiān)測(cè)箱內(nèi)溫度，保證電氣安全

具有DC 1500V母線電壓測(cè)量功能

可就地顯示/液晶顯示頭，方便調(diào)試維護(hù)

Current specification: 20A, perforation connection

3 DI

Temperature measurement

Busbar voltage measurement： DC 1500V

LCD display

證書(shū)：Certificate

2．APQM電能質(zhì)量分析裝置：APQM Power Quality Monitoring Device

APQM電能質(zhì)量分析裝置可用于光伏并網(wǎng)電能質(zhì)量監(jiān)測(cè)

產(chǎn)品特點(diǎn)：Functions

穩(wěn)態(tài)數(shù)據(jù)測(cè)量（電參量、諧波、間諧波、電壓波動(dòng)、閃變）

暫態(tài)數(shù)據(jù)監(jiān)測(cè)（電壓暫升、暫降、中斷）

統(tǒng)計(jì)功能（電能質(zhì)量越限次數(shù)，電壓合格率，自動(dòng)生成報(bào)表）

Measurement of electrical parameters, harmonics, inter-harmonics, voltage fluctuation, flicker,

Monitoring of voltage swell, voltage sag, voltage interruption,

Statistics of power quality limit times, voltage qualification rate, and form the report.

參考文獻(xiàn)Bibliography 
1.Photovoltaic system solutions 2021.4

2.PZ Series programmable intelligent meters