TITLE IIREQUIREMENTS

CHAPTER 2 Requirements for synchronous power-generating modules

Article 19Requirements for type D synchronous power-generating modules

1.

Type D synchronous power-generating modules shall fulfil the requirements laid down in Article 13, except for Article 13(2)(b), (6) and (7), Article 14 except for Article 14(2), Article 15, except for Article 15(3), Article 16, Article 17, except for Article 17(2) and Article 18.

2.

Type D synchronous power-generating modules shall fulfil the following additional requirements in relation to voltage stability:

(a)

the parameters and settings of the components of the voltage control system shall be agreed between the power-generating facility owner and the relevant system operator, in coordination with the relevant TSO;

(b)

the agreement referred to in subparagraph (a) shall cover the specifications and performance of an automatic voltage regulator (‘AVR’) with regard to steady-state voltage and transient voltage control and the specifications and performance of the excitation control system. The latter shall include:

  1. (i)

    bandwidth limitation of the output signal to ensure that the highest frequency of response cannot excite torsional oscillations on other power-generating modules connected to the network;

  2. (ii)

    an underexcitation limiter to prevent the AVR from reducing the alternator excitation to a level which would endanger synchronous stability;

  3. (iii)

    an overexcitation limiter to ensure that the alternator excitation is not limited to less than the maximum value that can be achieved whilst ensuring that the synchronous power-generating module is operating within its design limits;

  4. (iv)

    a stator current limiter; and

  5. (v)

    a PSS function to attenuate power oscillations, if the synchronous power-generating module size is above a value of maximum capacity specified by the relevant TSO.

3.

The relevant TSO and the power-generating facility owner shall enter into an agreement regarding technical capabilities of the power-generating module to aid angular stability under fault conditions.