Braking Energy Management Solution
Date：2017.12.23 Source：北京鼎漢技術(shù)股份有限公司
解決方案介紹 Solution introduction：
鼎漢提供兩種技術(shù)成熟的再生制動(dòng)能量利用系統(tǒng)，分別為超級(jí)電容儲(chǔ)能系統(tǒng)和逆變回饋系統(tǒng)，均支持750V、1500V兩種接觸網(wǎng)電壓體制。其中，超級(jí)電容儲(chǔ)能系統(tǒng)標(biāo)準(zhǔn)額定運(yùn)行功率為1MW；逆變回饋系統(tǒng)標(biāo)準(zhǔn)額定運(yùn)行功率為1MW～4MW。
Dinghan provides two braking energy management
systems based on mature technologies, including super capacitor energy storage
system and inverter feedback system both of which support 750V and 1500V
voltage systems from the overhead contact line system. Thereinto, the normal
operating power of the super capacitor energy storage system is 1MW and the one
of the inverter feedback system is 1MW～4MW.
The super capacitor energy storage system mainly consists of DC-DC bidirectional converters and super capacitors. When the voltage of the overhead line system rises since a train pulls in and regenerative braking stop occurs, the super capacitor energy storage system will lower the voltage of the electric energy supplied by the overhead line system through the converter and then charge the super capacitor of energy storage cabinet; on the contrary, when the train pulls out or is driving normally, the super capacitor energy storage system will begin to discharge and the electric energy will be sent to the DC overhead line system. This system realizes the recycling and reusing of braking energy and the function of stabilizing the voltage of the overhead contact line system and plays a role of peak load shifting.
逆變回饋系統(tǒng)主要由逆變裝置和隔離變壓器組成。當(dāng)列車進(jìn)站并發(fā)生再生制動(dòng)停車導(dǎo)致接觸網(wǎng)電壓上升，逆變裝置將接觸網(wǎng)的直流電逆變成交流電，經(jīng)隔離變壓器回饋至交流中壓電網(wǎng)，使接觸網(wǎng)電壓穩(wěn)定在設(shè)定范圍內(nèi)。
The inverter feedback system mainly consists of invertion devices and isolation transformers. When the voltage of the overhead contact line system rises since a train pulls in and regenerative braking stop occurs, the inverter device will converts the direct current of the overhead contact line system into alternating current and then the alternating current will be sent back to the AC medium voltage distribution network through the isolation transformer, so as to make the voltage of the overhead line system stabilize within the specified range.
方案應(yīng)用 Solution application：
再生制動(dòng)能量吸收利用系統(tǒng)覆蓋750V、1500V兩種電壓體制，應(yīng)用于如地鐵等啟動(dòng)、制動(dòng)頻繁、制動(dòng)功率大等特點(diǎn)的城市軌道交通中，實(shí)現(xiàn)再生制動(dòng)能量的吸收與再利用，不僅保障軌道交通運(yùn)行安全，而且實(shí)現(xiàn)節(jié)能目的及產(chǎn)生較大的經(jīng)濟(jì)效益。
The regenerative braking energy absorption
and utilization system covers 750V and 1500V voltage systems and is applied to
the urban rail transit such as railway and so on which have the characteristics
of frequent start and braking, large braking power and other characteristics,
realizes the absorption and reusing of regenerative braking energy, and not
only ensures the safe operation of rail transit, but also realizes the energy
conservation purpose and produces greater economic benefits.
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