How to measure the temperature of transformers in rail transit and the advantages of fiber optic temperature controllers-INNO

Fiber optic temperature measurement of rail transit transformers

Why does the traction power supply system of rail transit need to use fluorescent fiber optic temperature measurement
The power supply systems for traction power supply in urban rail transit in China are DC750V and DC1500V, corresponding to the current collection methods of the third rail and overhead contact network, それぞれ. The maximum voltage of the secondary winding of this power supply system’s transformer has exceeded 1000V, but the measurement range specified in the “Electronic Temperature Controller for Transformers” (JB/T7631-2016), which uses Pt100 as the temperature sensor, can only be limited to below 1000V. したがって, rail transit has higher voltage resistance requirements for temperature sensor probes and leads.

The fiber optic 温度コントローラー for rail transit uses fluorescent fiber optic temperature sensors as temperature sensing elements. This temperature sensing element is immune to electromagnetic interference and resistant to high voltage (100KV/fiber to ground lead distance of 0.4m). Fluorescent fiber optic temperature measurement completely cuts off the interference of temperature measurement elements transmitted to the temperature controller from the temperature measurement source, improving the safety level of rail transit.

の利点蛍光ファイバー光温度測定システム Applied in Rail Transit
For the operating environment of rail transit transformers, isolation and shielding from external electrical interference signals are achieved from the power supply, signal input end, signal output end, and temperature control box shell.

The power supply system of rail transit traction power supply is based on DC750V and DC1500V, while the measurement range specified in the “Electronic Temperature Controller for Transformers” (JB/T7631-2005), which uses Pt100 as the temperature sensor, can only be limited to below 1000V. したがって, the fiber optic temperature controller has extremely strong voltage resistance and can withstand 100KV.

In response to vibration, ほこり, 湿度, oil pollution and other on-site working environments, multi-layer protective measures are taken to ensure that the optical fiber temperature controller for rail transit has good electromagnetic compatibility, ensuring the stable and reliable operation of the temperature controller.

Design principles of fluorescence fiber optic temperature measurement system
Principle of practicality
The system construction adheres to the principle of practicality. On the basis of practicality, progressiveness and foresight are considered, and standard, advanced and mature products and development platforms are selected to build a system that is practical and solves practical problems.
Standardization principle
The system software and hardware platforms and application development tools used in application construction should comply with national standards, 情報産業省の基準, 関連する技術仕様と会社の要件.
均一性の原則
情報の一元管理の方針に従う, 全体的な計画, 全体的なデザイン, そして段階的な実装, 実装プロセスには 4 つの統一原則が組み込まれています: 統一されたリーダーシップ, 統一計画, 統一規格, 統合された組織と実装.
信頼性の原則
The software and hardware resources need to ensure the uninterrupted and reliable operation of the fiber optic temperature measurement system for 7 × 24 時間. したがって, it is necessary to equip a complete design of reliability measures to ensure the highly reliable operation of the system and fully consider the reliability requirements of key system applications.
信頼できるセキュリティ機構
このシステムは一連の安全な暗号化対策を採用しています, 内蔵の 64 ビット暗号化アルゴリズム. このシステムはより高いセキュリティを備えており、データ漏洩や盗難を効果的に防止できます。, 安全性の確保, 正確さ, システムのデータの整合性, 不正なオペレータの操作と正当なオペレータの違法な操作を防止する.
操作インターフェースはシンプル, フレンドリー, そして非常に知的な
システムは入力データの合法性を自動的にチェックし、オペレーターのエラーに対してわかりやすいプロンプトを表示します。.
Stable operation and reliable data.
プラットフォームの操作は簡単です, マスターしやすい, インストールプロセスは簡単です. 必要に応じてデータをさまざまなレポートに自動生成できます, 経営効率の向上.

Introduction to wiring and installation of fiber optic temperature controllers for rail transit
Structural framework
システムは 3 つの部分から構成されます: a fluorescent fiber optic temperature controller, 蛍光ファイバー光プローブ, および光ファイバー通信ソフトウェア.

The data transmission between the backend system and the temperature measurement terminal adopts RS485 communication method.

すべてのデータ収集, 管理, and temperature display are completed by communication software, and the system mainly realizes data collection and monitoring of temperature measurement. The fiber optic temperature measurement terminal integrates multi-channel fluorescent optical fibers, providing external RS485 communication, 干渉防止, and corrosion-resistant design.

Application functions of 光ファイバー温度測定システム in rail transit
リアルタイム監視
データ収集密度は顧客のニーズに応じて設定可能, システムは設定されたパラメータに基づいて定期的にデータを収集します. それから, 表形式または曲線描画で表示され、リアルタイム監視を実現します。. 設備稼働状況をリアルタイムに監視; Real time monitoring and recording of reactor temperature.

Basic functions of optical fiber temperature measurement system for rail transit
1) 温度データのクエリ

1. 指定した日付の温度データをクエリできます, ブラウズ, 印刷する, そしてExcelにエクスポートします.

2) 履歴温度データの保存

1. 温度データを永続的に記録する

Introduction to Fiber Optic Temperature Controllers for Rail Transit
main features
The fiber optic temperature controller for rail transit is embedded installation. This product has unique technical advantages in temperature measurement in special environments such as high voltage, 強い電磁干渉, 等. 温度ホットスポットと測定信号受信部分蛍光光ファイバー温度センサー do not use electrical connections, 長期間にわたって高精度かつ安定した動作が可能, 応用範囲が大幅に向上. The fiber optic temperature controller has high accuracy and sensitivity, is resistant to high pressure and can be remotely monitored, has a long lifespan, サイズが小さいです, 機器のメンテナンスが簡単かつ便利になります, 安全な輸送を保証します.

Main functions of optical fiber temperature controllers for rail transit
Provide three winding temperature measurement; Automatic/manual start stop cooling fan function; Digital compensation function for display values of each channel
LCD liquid crystal display patrols to display the temperature of transformer hotspots; Provide clock function;
ブラックボックス機能を提供する, which can record temperature data and historical maximum temperature before three power outages;
変圧器ドアキャビネットポイント開口アラーム機能を提供します;
提供する 2 pairs of over temperature alarm contacts (one normally open and one normally closed);
提供する 6 pairs of over temperature trip contacts (three normally open and three normally closed);
提供する 2 pairs of iron core alarm contacts (one normally open and one normally closed);
提供する 2 pairs of remote transmission contacts for fans (one normally open and one normally closed);
提供する 2 pairs of temperature controller power-off alarm contacts (one normally open and one normally closed);
提供する 2 pairs of temperature controller fault alarm contacts (one normally open and one normally closed);
ファン故障診断機能とファン故障警報接点の提供 (L関数);
One iron core temperature measurement and one iron core over temperature alarm contact (私は機能します);
RS485通信機能を提供, communication with time mark can receive timing or MODBUS-RTU protocol (F関数)
Additional functions of optical fiber temperature measurement system for rail transit
提供する 4 独立した4～20mAアナログ電流出力機能; (E機能)
PTC nonlinear resistance sensing temperature measurement protection function; (C function)
巻線温度上昇率、鉄心温度上昇率の警報機能;
通信プロトコルはProfibusなどの方式を採用可能, IEC60870-5-103, イーサネット通信, 等;