安科瑞 梅岑彬 18761500144

0 概述 Overview

 中國人民銀行金融信息中心數據中心配電室位于北京市西城區德外大街德勝國際中心，現有電力監控系統已運行7年時間，設備型號老舊，經常死機，故障頻繁，操作不方便，且備用主機已壞，需要進行改造。具體情況如下：

The power distribution room of the Data Center of the Financial Information Center of the People's Bank of China is located in Desheng International Center, Desheng Street, Xicheng District, Beijing. The existing power monitoring system has been in operation for 7 years. The equipment model is old, often crashes, frequently breaks down, and the operation is inconvenient.

The details are as follows:

配電室供電采用雙路供電方式，共有高壓柜18個，低壓開關柜59個，進線柜8個，電容控制柜 6個，變壓器8臺。本次改造在不影響機房供電的情況下更換配電室監控系統的軟硬件，增加9只環境溫濕度傳感器。在數據采集點及采集線路不改變的情況下改造，改造后可以降低系統的故障率，操作更便捷，功能更完善，同時提高了系統的安全性，穩定性。

There are 18 high voltage cabinets, 59 low-voltage switchgear cabinets, 8 incoming line cabinets, 6 capacitor control cabinets and 8 transformers in the distribution room.

In this renovation, the hardware and software of the monitoring system of the distribution room will be replaced without affecting the power supply of the machine room, and 9 environmental temperature and humidity sensors will be added.

In the case that the data collection point and the collection line are not changed, the reconstruction can reduce the failure rate of the system, operate more conveniently, function more perfect, and improve the security and stability of the system.

1 用戶需求 User needs

1.對實時數據進行統計、分析、計算，產生所需的電壓合格率、有功、無功、電流、總負荷、功率因數、電量日/月/年大值、小值及時間、日期、負荷率、數字輸入狀態量邏輯運算值等，設備正常/異常變位次數并加以區分等。

Conduct statistics, analysis and calculation on real-time data to generate required voltage qualification rate, active power, reactive power, current, total load, power factor, large value and small value of electric quantity daily/monthly/year, time, date, load rate, logical operation value of digital input state quantity, etc., and distinguish normal/abnormal device displacement times, etc.

2.為了防止工控機在運行中出現故障要求兩臺服務器同時工作并且接收數據一樣。

In order to prevent the failure of INDUSTRIAL computer in operation requires two servers to work at the same time and receive the same data.

3.為了采集的可靠性本項目采用工業網關做為采集設備，本網關具有數據存儲功能且具備兩個網口同時給兩臺服務器轉發數據。當其中一個網關有故障時只需要把采集端子更換到另外一臺備用網關即可。

In order to improve the reliability of collection, this project adopts the industrial gateway as the collection equipment. This gateway has data storage function and two network ports to forward data to two servers at the same time.

When one of the gateways is out of order, it is only necessary to replace the acquisition terminal to another standby gateway.

4.全數據備份，能夠將數據庫中所有信息備份；

Full data backup, able to backup all information in the database;

5.定時自動備份，能夠設定自動備份周期，對數據庫進行自動備份；

Timing automatic backup, automatic backup cycle can be set, automatic backup of the database;

6. 歷史數據恢復，能夠依據歷史數據備份文件進行歷史數據恢復；

Historical data recovery, historical data recovery can be carried out according to the historical data backup files;

2 系統方案 System solutions

本項目客戶關心的是系統的穩定性及安全性，要求系統和網絡做雙機冗余處理，保障數據的安全性。在雙網冗余系統中，主機和從機都使用兩個網絡適配器，并分配在兩個不同的網段，主/從機之間存在兩個網絡連接。兩個網絡互為備用，可保證主/從機之間的可靠網絡通信。雙網冗余系統的切換邏輯與單網冗余系統的區別就是在主/從機之間探詢對方狀態時增加了活動網絡與備用網絡的切換。以備份站探詢活動站狀態為例：當備份站通過活動網絡向活動站發送探詢命令，如果發現沒有得到活動站在規定時間內的正確應答，備份站并不立即將活動站判斷為故障站，而是自動切換到備用網絡再次向活動站發送探詢命令。如果備用網絡通信正常，則將備用網絡切換為活動網絡，并將故障的網絡狀態在報警信息中顯示出來。

The client of this project is concerned about the stability and security of the system, and requires the system and network to do double-machine redundancy processing to ensure the security of data.

In a dual-network redundant system, both the host and the slave use two network adapters and are assigned to two different network segments, with two network connections between the master and slave.

The two networks are mutually standby to ensure reliable network communication between master and slave.

The difference between dual network redundancy system and single network redundancy system is that the switch between active network and standby network is increased when the master/slave machine is inquiring the state of each other.

For example, when the backup station sends a query command to the active station through the active network, if it is found that the active station does not receive the correct response within the specified time, the backup station does not immediately judge the active station as a failure station, but automatically switches to the standby network and sends the query command to the active station again.

If the standby network communication is normal, the standby network is switched to an active network and the state of the failed network is displayed in the alarm message.