System Introduction

In the early 21st century, a series of large-area power failure accidents worldwide make it difficult to run large-scale concentrated generation electricity system, which is hard to meet users’ higher electric energy requirements with increasing abuse. Meanwhile, energy crisis and environment pollutions had been paid attention worldwide. It can’t solve these issues only depend on enlarging scale of power grid. Distributed generation emerged as effective supplement for concentrated generation, with characters of little pollution, high reliability, high energy efficiency, flexible installation site and other advantages, effectively solve many potential problems of large-scale concentrated power grid.



Schematic Diagram

System Features

  • On-grid and Stand-alone running mode

    This is the essential difference between smart microgrid and charged distributed generation system. Smart microgird run under on-grid mode has peak load shifting effects on large power grid. When power grid fault occurs, smart microgrid can split large power rapidly, island running. Provide continuous power for important load such as government, hospitals, traffic hub and improve reliability of power supply.
  • Stability

    When microgrid run individually, can balance power and make voltage and frequency steady under steady state and transient state, effectively solve problems of voltage and harmonic wave. Avoid immediate influence on electric energy for around users by intermittent power.
  • Compatibility

    Microgird is the most effective method to realize distributed generation grid-connected, which integrates original scattered distribution renewable resources. Through energy storage devices and control protective devices can realize smooth power fluctuation, ensure supply and demand balance and system steady. It can overcome disadvantages of distributed generation, randomness and intermittent, solve distributed generation access problems.
  • Flexibility

    Microgrid can be regarded as a controlled unit of large power grid, realize distributed generation “plug and play”. According with users’ requirements can provide electric energy with different prices and various classes to meet users’ multifarious requires.
  • Power system optimization solution

      Energy transfer application

    Mode 1

    It is suitable for large-scale photovoltaic power plants, serious power limit scene, application with the power grid access conditions and enough space for system installation.
    Characteristic advantage:

    1. AC bus connection, suitable for centralized management.
    2. No more use solar, no more use wind, highly enhance the economy, improve the economy.
    3. tracking scheduling, improve the on-grid controllability.
    4. to improve the prediction accuracy of power generation, and promote on-grid friendly.
    5. Application scheme for centralized storage system structure diagram.


    Mode 2

    Suitable for small and medium scale of photovoltaic power plants, the area with serious power limit generation scenarios, and the area without access to grid as well as no large grid installation site.
    Characteristic advantage:

    1. DC bus connection, modular design, flexible configuration.
    2. storage system does not need additional on-grid requirements and save step-up transformer.
    3. No more use solar, no more use wind, highly enhance the economy.
    4. peak valley price, improve system revenue.

      Micro grid application

    Mode 1

    It suitable for non-power, islands and other independent grid areas, multi energy complementary, spontaneous and self-use and scattered areas of photovoltaic installation.
    Characteristic advantage:

    1. High efficiency ,flexible; suitable for multi renewable energy system.
    2. AC bus connection for centralized management.
    3. Wide radius, easy expansion, suitable for long-distance transmission.

    Mode 2

    Suitable for small and medium scale of photovoltaic power plants, the area with serious power limit generation scenarios, and the area without access to grid as well as no large grid installation site.
    Characteristic advantage:

    1. DC bus connection, modular design, flexible configuration.
    2. storage system does not need additional on-grid requirements and save step-up transformer.
    3. No more use solar, no more use wind, highly enhance the economy.
    4. peak valley price, improve system revenue.

      Power frequency modulation application

    It can meet the requirements of the first frequency of the grid to respond quickly to the Scene, to respond to short-cycle load power changes; with the generator, it can make secondary frequency scene; to assist traditional power systems and AGC equipment.
    Characteristic advantage:

    1. It can achieve the first and secondary frequency Modulation.
    2. Effectively improve the grid frequency stability.
    3. With fast dynamic response speed.


    Cases

    • Wuxi Singapore industrial park intelligent distribution network energy storage power station
      Project profile
      Storage power: 20MW
      Storage capacity: 160MWH
      Storage function: Realize the electricity bill management of the distribution network in the park (electricity charge and capacity charge ),adjust the peak load balancing of the park,provide smart energy saving and emergency power supply, Achieve power demand response.
      Electricity saving charge: Annual peak power output: 53.76GWH, Annual electricity saving 36.643million.
      Project significance:
      The Chinese first incremental distribution network + storage system.
      The world’s largest household operated commercial storage power station project.
    •       Beijing Lan Jingli commercial complex storage power stations
       

      Project profile
      Storage power: 1MW
      Storage capacity: 5MWh
      Storage function: Achieve the shopping malls capacity management and electricity tariff management; Solve the impact point when the electric car charging access to Grid; Meet peak / off peak shift storage services; meanwhile participate in response to grid demand.
      Save electricity bill: The peak power generation capacity yearly is 1.68 million kWh, the annual electricity savings Cost about 1.443 million YRMB;
      Reduce the user line expansion investment, saving expansion investment 200000 YRMB.
      Project significance:
      The first commercial energy storage power station used in the large-scale commercial unit in China.

    We are the best

    1. Professional design team.
    2. Optimize system design according with your load characteristics and power class.
    3. Optimize battery selection according with backup power supply time.
    4. Optimize solar panel selection according with lighting time.



    TOP