Substation Unit

The unit substation usually gathers the power generation of photovoltaic panels and inverters in a certain area, shares a step-up transformer to increase the output voltage of the inverter to 22.8KV for facilitating the transmission of power to the remote UHV parallel booster station, and then boosts and connect it to TPC’s UHV system (69KV or 161KV).

Introduction

• Execute the system protection function, and send an alarm when the inverter or the line-side protection relay operates.
• Collect various power generation data of the inverter, and control the load reduction or load shedding, etc.
• Collect substation transformer temperature, switch status data and various measurement data of monitoring meters.
• Collect meteorological data, including insolation amount, atmospheric temperature, array temperature, wind speed, wind direction data, etc.
• Collect the DC voltage, current, power, cumulative power generation, box temperature, SPD operation status, etc., of each string in the DC sub-junction box.

Specifications

• SUS 304 2t+ powder baking varnish, outdoor console plate, IP66 grade.
• Built-in high-value PLC controller, which is responsible for data collection and monitoring of the peripheral equipment of the unit substation. 
• Built-in CPU module, power supply module (dual set for backup), RS-485 communication module, DI module point, DO module point, AI module point (the number of points can be customized).
• Equipped with automatic lighting, temperature and humidity detectors, heating modules, etc.
• Each RS-485 PORT is equipped with an independent anti-surge protector and thunder protection module, which can be plugged in and replaced.
• Built-in two sets of optical fiber storage boxes and optical fiber converters, which are connected in a loop with the UHV parallel control system.

UHV Parallel Booster Station

UHV parallel booster station is designed to concentrate the high-voltage power of each unit substation, and then share a UHV transformer to increase the voltage and connect it to the UHV system designated by TPC, such as 69KV or 161KV, etc.

Introduction

• Collect the status, analog, digital and RS-485 instrument and control signals and accident records of the peripheral equipment around the UHV parallel system. 
• Control functions such as sequence control, ladder, logic, etc., implement of system protection functions, and send out an alarm when the line-end protection relay operates.
• Process 512-point event list function, also called sequence of event (SOE) list, including control and monitoring switches, all critical events of the power plant. Each event can record and display the time in milliseconds (ms).
• Handle the monitoring data exchange and integration function of the UHV parallel booster station communicating to ADCC green energy C/S RTU system of Taipower Operation Office.
• Handle P, Q regulation and VP-SET functions of UHV parallel booster station and Taipower monitoring smart converter.

Specifications

• SUS 304 2t+ powder baking varnish, indoor console plate.
• Built-in dual sets of advanced PLC controllers which are responsible for data collection and monitoring the peripheral equipment of the UHV parallel system.
• Built-in power module (dual backup), DI (SOE) module 256 points (512 points), general DI module 16 points (32 points), DO module 96 points (192 points), AI module 32 points (64 points) and RS-485 module 4 sets (8 sets).
• Built-in DI (SOE) optical isolator input conversion interface 256 points, general DI optical isolator input interface 16 points, DO control relay conversion interface 96 points, AI input conversion interface 32 points.
• Taipower Power Dispatching DNP 3.0 conversion communication interface.
• Smart converter P, Q control and VP-SET communication control Gateway.

Large-Scale Solar Monitoring and Management System

Large-scale solar monitoring and management systems are divided into UHV grid-connected monitoring and power generation management of power plant equipment. The former aims at real-time and safety monitoring. The latter emphasizes efficiency and O&M management. UHV grid-connected monitoring uses the PV SCADA system based on professional graphic control, which can achieve accurate and real-time monitoring. PV power generation O&M management uses a simple and efficient traceability management system, which can grasp the equipment performance of the whole plant and power generation efficiency as well as guarantee the amount of power generation.

Introduction

• Display each switch status, instrument power information and control buttons of the line diagram for the UHV grid-connected system.
• Display each switch status, instrument power information and control buttons of each unit substation
• The regional overview can show the real-time status of power generation and real-time weather information in the whole area.
• Display all current IED information and a list of relay status, etc.
• It can display the communication status of the optical fiber network in the whole area, including the photoelectric converter and the connection status diagram of the PLC controller of each unit substation.
• It can be used to, for real-time, draw various data trend charts, historical data curves, etc.
• It can list all alarm status in the whole area and confirm each individual notification.
• It can list the occurrence time and query of all events (SOE) in the whole area. The time indicator unit is 1ms.
  

Specifications

• SUS 304 2t+ powder baking varnish, vertical monitoring cabinet, standard instrument cabinet 42U.
• Built-in a set of high-voltage grid-connected monitoring servers, including professional graphic control software and UHV grid-connected and unit substation monitoring system (PV-SCADA).
• Built-in a set of PV power generation O&M management servers, including a set of industrial-level database and traceability management systems.
• Built-in synchronous time calibration server, sets up with the GPS antenna, unifies the SCADA system time, makes the PV-SCADA and TPC ADCC system timing synchronous.
• Built-in fiber converter and two sets of fiber fusion splicing boxes which are connected to the PLC controllers of each unit substation by using the ring construction method.
• A built-in image monitoring server can connect and record the network cameras around the power plant and important entrances and exits.
• Built-in UPS uninterruptible power system single-phase 220V, 5KVA.