Address
304 North Cardinal St.
Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
The S-PRO sub-harmonic protection relay protects various power system equipment including generators, wind turbines, PV system, series compensated transmission lines, FACTS devices and power transformers from uncontrollable sub-synchronous oscillation conditions known as:sub-synchronous torsional interaction (SSTI)sub-synchronous control interaction (SSCI)sub-harmonic resonance (SSR)sub-harmonic ferroresonanceThese sub-synchronous oscillation conditions introduce opportunities for an exchange of energy at a given sub-synchronous frequency of the system. This exchange of energy results in stress on the power system elements involved that can lead to severe damage.The S-PRO relay detects these undamped sub-synchronous oscillations and allows the utility to monitor and protect the power system by isolating the healthy grid from sub-harmonic generation sources.Features and BenefitsProvides real time processing of voltage and current signals at all Sub-harmonic frequencies in the range of 5 – 55 Hz (60 Hz system) and 5-45 Hz (50 Hz system) with a detection resolution of 0.2 HzOperating speed between 200-450msProvides incident trending to protect generators and other equipment against sustained sub-harmonics beyond normal levels that may not exceed levels that will cause SSROperations per duration settable for durations from 1-60 minutesEvents accumulated over a long period of time can be used to flag maintenance requirementsSub-harmonic measurements monitoring through 61850 GOOSE, DNP 3 and Modbus.Total Sub Harmonic Distortion (TSHD) reporting59, 27 and 50LS protection at <1.5 cycles,2nd and 5th Harmonic Blocking for reliable operation under inrush conditions
Flexible CommunicationsState-of-the-art communications (2 rear ports, 100BASE-TX RJ-45 or 100BASE-FX 1300 nm multimode optical with ST style connector to accommodate the industry’s latest network-based communications)Ethernet ports with 2 unique MAC addresses that easily accommodate network access security needsFront panel USB and 100BASE-TX RJ-45 Ethernet port interfaces (readily accommodate modern standard laptops)
Reduced CostSubstation automation cost – includes IEC61850 protocol to display and transfer operational data via local-area network (LAN) for local HMI and wide-area network (WAN) for remote monitoring SCADASubstation engineering, installation and commissioning cost and times – IEC 61850 GOOSE messages communicate high-speed information between IED’s on the substation LAN (including transfer trips, interlocking, load-shedding, and commands)Product setting time – 240 x 128 LCD graphical user interface provides convenient means to check/change specific settings and parameters
Improved Overall Response TimeExpedited response to systems events (11 generic front panel LEDs can be mapped to internal elements) allowing operators to quickly identify the cause of system events
Easy to Use
Flexible programmable logic for building customized schemes with ProLogic™ statements User-friendly,Windows®-based relay setting and record analysis softwareEnhanced DNP3.0 Level 2 SCADA communication protocol including user-selectable point lists, class support and multiple master station supportExceptional fault recording capabilities with 96 s/cycle, all channels with events
S-PRO 次谐波保护继电器可保护各种电力系统设备，包括发电机、风力涡轮机、光伏系统、串联补偿输电线路、FACTS 装置和电力变压器，免受不可控的次同步振荡条件的影响，这些条件被称为：次同步扭转相互作用 (SSTI)、次同步控制相互作用 (SSCI)、次谐波谐振 (SSR) 和次谐波铁磁谐振。这些次同步振荡条件为系统在给定的次同步频率下进行能量交换提供了机会。这种能量交换会对相关电力系统元件造成压力，并可能导致严重损坏。S-PRO 继电器可检测这些无阻尼次同步振荡，并通过将正常电网与次谐波源隔离，使电力公司能够监控和保护电力系统。功能和优势：实时处理 5-55 Hz（60 Hz 系统）和 5-45 Hz（50 Hz 系统）范围内的所有次谐波频率的电压和电流信号，检测分辨率为 0.2 Hz；运行速度在 200-450 毫秒之间；提供事件趋势分析，以保护发电机和其他设备免受持续次谐波的影响，这些次谐波可能超出正常水平，但不会超过导致次同步振荡 (SSRO) 的水平；每次运行持续时间可设置为 1-60 分钟；长期累积的事件可用于标记维护需求；通过 61850 GOOSE、DNP 3 和 Modbus 进行次谐波测量监控；总次谐波失真 (TSHD)。报告59、27和50LS保护，周期小于1.5次；2次和5次谐波闭锁，确保浪涌条件下的可靠运行；
灵活的通信：先进的通信技术（2个后置端口，100BASE-TX RJ-45或100BASE-FX 1300 nm多模光纤，带ST型连接器，可兼容业界最新的网络通信）；以太网端口，配备2个独立的MAC地址，轻松满足网络访问安全需求；前面板USB和100BASE-TX RJ-45以太网端口接口（可轻松连接现代标准笔记本电脑）；
降低成本：变电站自动化成本——包含IEC61850协议，可通过局域网(LAN)显示和传输运行数据，用于本地人机界面(HMI)，并通过广域网(WAN)进行远程监控；变电站工程、安装和调试成本及时间——IEC 61850 GOOSE消息可在变电站局域网上的智能电子设备(IED)之间高速传输信息（包括跳闸、联锁、负载切除和命令）产品设置时间 – 240 x 128 LCD 图形用户界面提供便捷的方式来检查/更改特定设置和参数。
改进的整体响应时间：加快对系统事件的响应（11 个通用前面板 LED 可映射到内部元件），使操作员能够快速识别系统事件的原因。SPRO 屏幕截图。
易于使用：灵活的可编程逻辑，可使用 ProLogic™ 语句构建自定义方案。用户友好的基于 Windows® 的继电器设置和记录分析软件。增强的 DNP3.0 二级 SCADA 通信协议，包括用户可选的点列表、类支持和多主站支持。卓越的故障记录功能，96 秒/周期，所有通道均有事件记录。
