The railway channel signal surge protector is mainly suitable for the surge protection of the railway low-voltage AC circuit, which is a composite SPD. The SPD module is equipped with a safety disengagement device and a failure indication window. When the internal protection element deteriorates, the tripping device operates to safely disengage the failure device from the system, and the corresponding module indication window displays red (fault). Damage caused by electrical overvoltage, induced overvoltage, etc. The product is suitable for the signal line protection of railway signal machines, track circuits and other system equipment. It is plugged into the WAGO terminal block. It is equipped with a status display window and an identification pin for preventing wrong insertion. The pin can realize the separate test of lightning protection components. The parallel type is equipped with over-current and thermal tripping devices, which can realize hot swapping. A remote signaling contact for deterioration alarm can be added upon request from the customer. The surge protection is set independently, and it can also be used as a lightning protection distribution cabinet. Each surge protector can protect a pair of signal transmission lines. Product features: 1. Large flow capacity; 2. Status display window, identification pin for preventing wrong insertion; 3. Various rated voltage options; 4. Stable performance, safe and reliable.

Product overview: Jinli surge protector in dc adopts excellent non-linear overvoltage protection components. Under normal circumstances, the surge protector is in a high-impedance state and the leakage current is extremely low。 The surge protector is immediately turned on in nanoseconds, limiting the overvoltage amplitude within the safe operating range of the equipment, and at the same time releasing the surge. Subsequently, the factory direct selling surge protector quickly changes to a high-impedance state, so as not to affect the normal power supply of the power system. Features: 1. Reliable thermal tripping protection device; 2. Unique short circuit and overcurrent tripping function; 3. Visual status indication window: green/transparent (normal), red (fault) working status at a glance; 4. Through current Large capacity, low residual voltage; 5. Fast response time, action within nanoseconds; 6. Remote signaling contacts are optional. For specific selection and parameters, please refer to the part of the electric power industry selection manual "Instructions for Surge Protector 2022 Second Edition"

(7) Accident records. Record the maximum fault current at the time of the accident and the average load for a period of time before the accident (usually Imin), so as to analyze the accident, establish the fault section, and provide a basis for load restoration when the power supply of the healthy section is restored.   (8) fixed value remote modification and calling fixed value. In order to start the process of accident recording and other processes in time when a fault occurs, the FTU must be set, and the set value should be able to adapt to the change of the distribution network operation mode. Make FTU able to receive the specified modified setting value from DAS control center, and enable DAS control center to call the current setting value of FTU at any time.   (9) Self-test and self-recovery functions. FTU should have a self-detection function, and timely alarm when the equipment itself fails; FTU should have a reliable self-recovery function, once it is disturbed and causes a crash, the system will resume normal operation through the monitoring timer (W bit system.   (10) Remote control lockout And manual operation function. When repairing lines or switches, the corresponding FTU should have the function of remote control and locking to ensure the safety of operation and avoid vicious accidents caused by misoperation. It should also be able to provide manual closing/tripping buttons, In case of failure of the channel, manual operation can be performed to avoid directly operating the switch on the lever.   (11) Long-distance communication function. FTU has long-distance communication function, and can communicate with various communication transmission equipment ( DCE) is connected, the important issue is the communication protocol of FTU, which is faced with an urgent need

The surge protection device's half-wave Fourier algorithm measuring the current under normal operating conditions has high requirements for measurement accuracy, but the response can be slower, and the required current effective value is an average concept, and the root mean square algorithm is generally used. The protection data and measurement data generally cannot be shared, but must be collected independently, and should be taken from the protection TA and measurement TA windings respectively. Currently, only one set of protection TA can meet the requirements for domestic 10kV vacuum switches. FTU generally should also monitor the power supply voltage and the remaining capacity of the battery.   (3) Remote control function. FTU should be able to accept remote commands to control the switch on and off on the pole, and start the energy storage process, etc.   (4) Statistics function. The FTU should also be able to monitor the number of times and operation time of the switch and the level of the accumulated cut-off current.   (5) Time synchronization function. FTU should be able to accept the time synchronization command from the main system so as to keep consistent with the system clock.   (6) Sequence of Event Recording (SOE). Record the time and sequence of changes in state quantities.

FTU is the abbreviation of "distribution automation terminal", also known as "feeder terminal equipment". Its main function in the power distribution system is to collect local AC measurement (such as voltage, current, power, etc.) (such as switch performance, etc.), and execute remote control commands (such as jumping and closing switches). The middle section of distribution automation is widely used in 10kV distribution lines, and can monitor load switches, sectionalizers, ring network contact switches, etc. The FTU can be installed on the outdoor wire pole, and can be used for single-wire control or double-wire control erected on the same pole. (1) Remote signaling function. The FTU should be able to collect important state variables such as the current position of the switch on the pole, whether the communication is normal, and the completion of energy storage. If the FTU itself has a microcomputer relay protection function, it should also respond to the remote signaling of the protection action. (2) Telemetry function. The FTU should be able to collect analog quantities such as the voltage of the line, the load current experienced by the switch, active power, and reactive power. Generally, the fault current of the line is much larger than the normal load current, and the dynamic range of the input current must be relatively large to collect fault information. The purpose of measuring the fault current is to carry out relay protection and judge the fault section. Therefore, the measurement accuracy is not high, but the response speed is required to be fast, and the fundamental wave signal must be filtered out.

Energy storage container string PCS makes up for the lack of centralized type and opens up large-scale applications. At present, battery energy storage systems in the industry mainly adopt centralized PCS. Parallel connection of multiple batteries will cause imbalance between battery clusters. The actual output is insufficient, and the other part exceeds the rate of use, resulting in the "barrel" effect; while the string PCS can achieve cluster-level management, improve system life, and increase the discharge capacity of the entire life cycle. The trend of large-scale application has taken shape.   Energy storage is also the focus industry of Anhui Jinli, and new energy storage is one of the breakthroughs for the birth of new formats in the energy industry and the creation of new economic engines. At present, my country is building a new power system with new energy as the main body, and the market for new energy storage is vast   Since the energy storage converter and the battery management unit are easily attacked by lightning during a lightning strike, the most economical and reasonable lightning protection solution is to install a suitable surge protector or an energy storage lightning protection box. When a fault occurs, it is easy to cause abnormal failure of the surge protector or even cause secondary safety accidents and incalculable economic losses. Therefore, it is very important to realize the safe and reasonable selection of surge protectors for energy storage systems. With the explosion of energy storage demand, Anhui Jinli energy storage intelligent lightning protection box and energy storage surge protector products continue to deepen the energy storage field, explore the difficulties and pain points of the user site, and escort the safe operation of the user's energy storage project, creating User electricity environment!

At 10:40 am on November 3, 2022, there was a "click" sound in the 10kV switch station of Huaneng Yueyang Leigutai Photovoltaic Power Station. Questions about friends in the circle: 1. Why do photovoltaic power plants use power-saving products? First of all, we have to start with the loss at night. Once the photovoltaic power generation system is connected to the grid, the equipment in the station will always be connected to the grid. Power consumption. According to calculations, in the nighttime standby loss, the annual loss of each 20MW power station is 155,000 kWh, and the converted electricity price is about 82,000 yuan, and the cumulative cost in 25 years is about 2.05 million yuan. 2. Is the photovoltaic intelligent energy-saving system a newly developed product? No, Anhui Jinli Photovoltaic Intelligent Power Saving System was launched in the market in 2014, and in December 2014, it obtained the operation certificate from the user side. About the future: Anhui Jinli will continue to dig deep into the field of photovoltaic power generation, discover the difficulties and pain points of the user's site, and will continue to focus on the photovoltaic energy-saving management system under the strategic deployment of the group company, and contribute to the quality improvement of the user's photovoltaic power station!

In the "China Electric Power Development Report 2018" released by the General Electric Power Planning and Design Institute in June 2019, "smart power plant" is defined as: facing the whole life cycle of the power plant, integrating the use of a new generation of information communication, artificial measurement , control, engineering, operation and maintenance, management and surge protective device other technologies, take the power generation system as the carrier, in its key links or processes, form a certain autonomous perception, learning, analysis, decision-making, communication and coordination control capabilities, which can adapt to the power generation environment. changes, and is highly coordinated with the smart grid, so as to achieve global (including power generation output, availability, efficiency, safety, reliability, maintainability, flexibility, equipment wear/loss, etc.) local optimization goals, to achieve safety, A power plant with a sustainable supply of reliable, green, economical and flexible electricity. All in all, a smart power plant is a new generation (AI), information and communication technology (ICT), power generation operation technology (OT), power generation engineering technology (ET), power generation management technology (MT) and other technology integration application system organisms.