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SNP-2313H ABB微機(jī)保護(hù)繼電器是一款功能強(qiáng)大的綜合保護(hù)裝置，適用于66kV及以下電壓等級(jí)的經(jīng)消弧線圈接地或不接地系統(tǒng)中的進(jìn)線、饋線保護(hù)。以下是關(guān)于SNP-2313H ABB微機(jī)保護(hù)繼電器的詳細(xì)解析：

一、適用范圍與安裝

• 適用于66kV及以下電壓等級(jí)的系統(tǒng)中，可用于進(jìn)線、饋線保護(hù)。
• 可集中組屏，也可在開(kāi)關(guān)柜就地安裝，全面支持變配電所綜合自動(dòng)化系統(tǒng)。

二、功能及特點(diǎn)

1. 保護(hù)功能

• 三相三段式方向電流保護(hù)：包括速斷、限時(shí)速斷、過(guò)流反時(shí)限，并帶有低電壓閉鎖功能。
• 三相三次重合閘：支持檢無(wú)壓、檢同期、不檢等模式，重合次數(shù)可設(shè)定，帶后加速功能。
• 零序電壓閉鎖方向零序過(guò)流保護(hù)：具有報(bào)警和跳閘選擇功能。
• 其他保護(hù)功能：包括小電流接地選線功能、低電壓保護(hù)、低頻減載保護(hù)、過(guò)負(fù)荷告警等。

2. 輔助功能

• 告警功能：包括PT斷線告警、母線接地告警、裝置故障告警等。
• 整定與診斷：支持保護(hù)定值和時(shí)限的獨(dú)立整定，具有自檢和自診斷功能。

3. 測(cè)控功能

• 電量測(cè)量：可測(cè)量電壓、電流、有功功率、無(wú)功功率、功率因數(shù)、電網(wǎng)頻率等。
• 信號(hào)檢測(cè)：裝置共有8路開(kāi)入量，用于檢測(cè)各種信號(hào)。

三、技術(shù)特點(diǎn)

• 設(shè)計(jì)先進(jìn)：采用分層分布式設(shè)計(jì)，可組屏安裝或直接安裝于開(kāi)關(guān)柜上。
• 抗干擾能力強(qiáng)：封閉、加強(qiáng)型單元機(jī)箱，抗強(qiáng)干擾設(shè)計(jì)，適用于惡劣環(huán)境。
• 安全性高：設(shè)有獨(dú)立的起動(dòng)元件用來(lái)開(kāi)放繼電器電源，提高裝置的安全性。
• 記錄與顯示：可記錄64次SOE事件，采用漢字液晶顯示，鍵盤(pán)操作方便。

四、基本原理

SNP-2313H微機(jī)保護(hù)繼電器的工作原理主要基于電流速斷、限時(shí)速斷、過(guò)流保護(hù)等原理。當(dāng)A、C（或A、B、C）相電流基波最大值達(dá)到整定值時(shí)，定時(shí)器啟動(dòng)。若持續(xù)到整定時(shí)限且相應(yīng)保護(hù)的投退控制字處于投入狀態(tài)，裝置則發(fā)出跳閘控制信號(hào)，并記錄和上傳相應(yīng)的SOE事件。

The SNP-2313H ABB Microcomputer protection relay is a powerful and comprehensive protection device for inlet and feeder protection in grounded or ungrounded systems with arc suppression coils at voltages up to and including 66kV. The following is a detailed analysis of the SNP-2313H ABB microcomputer protection relay:

Scope of application and installation

Suitable for 66kV and below voltage level of the system, can be used for incoming line, feeder protection.

Can be centralized panel, can also be installed in the switch cabinet, fully support the power distribution office integrated automation system.

2. Functions and characteristics

1. Protection function

Three-phase three-stage directional current protection: including speed break, speed limit break, overcurrent reverse time, and with low voltage lock function.

Three-phase three times reclosing: support no voltage, check the same period, non-check and other modes, the number of coincidence can be set, with post-acceleration function.

Zero sequence voltage blocking direction zero sequence overcurrent protection: with alarm and trip selection function.

Other protection functions include low-current grounding line selection, low-voltage protection, low-frequency load reduction protection, and overload alarm.

2. Auxiliary functions

Alarm functions include PT disconnection alarm, busbar grounding alarm, and device fault alarm.

Setting and diagnosis: Support independent setting of protection values and time limits, with self-check and self-diagnosis functions.

3. Measurement and control function

Power measurement: can measure voltage, current, active power, reactive power, power factor, grid frequency, etc.

Signal detection: The device has a total of 8 channels for detecting various signals.

3. Technical characteristics

Advanced design: layered distributed design, can be installed on the panel or directly installed on the switch cabinet.

Strong anti-interference ability: closed, reinforced unit chassis, anti-interference design, suitable for harsh environments.

High safety: an independent starting element is provided to open the relay power supply to improve the safety of the device.

Record and display: can record 64 SOE events, using Chinese LCD display, keyboard operation is convenient.

4. Basic Principles

The working principle of SNP-2313H microcomputer protection relay is mainly based on the principle of current breaking, limiting speed breaking, overcurrent protection and so on. When the maximum value of A, C (or A, B, C) phase current fundamental wave reaches the setting value, the timer starts. If it continues until the setting time and the corresponding protected back-off control word is engaged, the device sends a trip control signal and records and uploads the corresponding SOE event.