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Hani Energy company after nearly two decades of experience in development of various types of electronic cards, excitation system components and cards developed a complete excitation control and protection systems for generators. The design and implementation of all power electronic parts and control parts of the system and its implementation as a DCS system are parts of our technical capabilities in this field.

The most important features of this system include the followings: 

  • Configuration of Siemens hardware and software-based controls, based on PCS7 300 and 400 class.  
  • Using Siemens PCS7 software and CFC programming. 
  • High processing speed of control loops (less than 2 milliseconds). 
  • Ability to implement the system through hot redundancy in the control, power and cooling systems. 
  • Reduction of generator losses by placing its working point at the nominal working point which results in better generator efficiency. 
  • Ability to communicate with the proxy bus network and industrial Ethernet network. 
  • The ability to change the power of the excitation system from the dynamic to the static mode and the removal of the middle power generators. 
  • Full control over the generator by various control modes. 
  • Voltage control in automatic mode or AVR (automatic voltage regulator). 
  • FCR (Field Current Regulator) flow control. 
  • Reactive power control and generator power factor in PF (power factor). 
  • Transmission without mutants between control modes. 
  • Reactive flow regulator and the ability to determine the line drupe or reactive power drill. 
  • Soft power generator startup voltage to prevent sudden spin on triggering. 
  • Contains UEL (under excitation limiter), OEL (over excitation limiter) limiting stator current limiter (SCL) and limiting volts per Hz (V/Hz). 
  • Display of the generator’s work point in the generator’s power generation curve on the HMI. 
  • Design of the power sector in two ways to increase the speed of the De-excitation. 
  • Monitoring the position of rotating diodes in the system of dynamic stimulation and the state of the thyristors in the static excitation system

 

This project includes all the issues of stimulation and protection of the generator.

Project: Designing and Replacing Comprehensive Generator Excitation and Protection System

Unit name: Hitachi

Used Technology: DCS SIEMENS PCS7

Estimated time: 6 Month

Unit capacity: 25 Mega Watt

Delivery Date: 2018 May

This project is the purchase and installation of a generator protection system and AVR turbine control system GE-F5

Project: Designing and Replacing Comprehensive Generator Excitation and Protection System

Unit name: Alstom

Used Technology: DCS SIEMENS PCS7

Estimated time: 3Month

Unit capacity: 25 Mega Watt

Delivery Date: 2020 Jun

The purchase of the Skoda excitation system was assigned to this company under a contract.

Project: Designing and Replacing Comprehensive Generator Excitation and Protection System

Unit name: Skoda

Used Technology: DCS SIEMENS PCS7

Estimated time: 2 Month

Unit capacity: 60 Mega Watt

Delivery Date: 2020 April

Changing the excitation system from dynamic to static mode.

Project: Designing and Replacing Comprehensive Generator Excitation and Protection System

Unit name: LMZ

Used Technology: DCS SIEMENS PCS7

Estimated time: 3 Month

Unit capacity: 320 Mega Watt

Delivery Date: 2020 April