APARTADO CUARTO. ANUALIDADES:

GWMOD Wind machine control mode: 0. Not a wind machine.

1. Wind machine whose reactive power limits are specified by QMAX and QMIN.

2. Wind machine whose reactive power limits are determined from the machine‟s active power output and GWPF; limits are of equal magnitude and opposite sign.

3. Wind machine with a fixed reactive power setting determined from the machine‟s active power output and GWPF; when GWPF is positive, the machine‟s reactive power has the same sign as its active power; when GWPF is negative, the machine‟s reactive power has the opposite sign of its active power.

GWPF Wind machine power factor.

GBASLD Base load flag:

0. Unit is not base-loaded. 1. Unit is base-loaded.

15.4 Load Data

A bus can have more than one load connected to it. Each load is composed of 5 components, each component having its own load model. The load data is entered in three lines. The first line consists of the following items:

Bus number: Number of the bus where the load is connected (not given when bus identification code is 2).

Bus name: Name of the bus where the load is connected (not given when bus identification code is 1).

Reference PQ: Reference Complex PQ load in MW and MVAR obtained from base case.

PQ comp (1:4): 4 pairs of real and reactive parts of load components 1 to 4, in MW and MVAR. For load components with model -1, -2 and -4 (see below), these represent the nominal value of load at rated voltage. For components with model -3, these represent the load admittance (negative reactive part for inductive load) in MW and MVAR at rated voltage. For components with model +k, these represent P0 and Q0 factors (see Load Model Data

below).

The following items are specified on the second line:

PQ comp (5): 1 pair of real and reactive parts of load component 5, in MW and MVAR.

Load model: 5 load model numbers of load components 1 to 5. The load model number can be:

-1 = Constant MVA -2 = Constant current load -3 = Constant impedance load

+k = Model number "k" represented in the load model table

Load type: The following load types are available (default 1): 1 - Industrial

2 - Firm

3 - Non-industrial

Load owner: 16 characters long load ownership ID.

Load ID: 8 characters long load identifier used to distinguish among multiple loads at the same bus.

Scalable: Controls if load should be adjusted when performing load scaling or if load is fixed (1 – Scalable; 2- Fixed) Default is 1.

The following items are specified on the third line:

Equipment Name: 32 characters long equipment name.

Area: Load area number. Default is bus area.

Zone: Load zone number. Default is bus zone.

15.5 Load Model Data

The load model table is used in conjunction with the load data to represent voltage dependent loads. A voltage dependent load component with load model k is represented as:

P load = P0 (A1k VN1k + A2k VN2k + A3k VN3k) Q load = Q0 (B1k VM1k + B2k VM2k + B3k VM3k)

where P0 and Q0 are specified as part of load data (see PQ Comp above) and A1 , A2 , A3 , N1 , N2, N3 , B1 , B2 , B3 , M1 , M2 and M3 are parameters of the model specified in this section. Each line of data in this section consists of:

Model number: The load model number (+k).

A values: Three real numbers specifying the coefficients for P load.

N values: Three real numbers specifying the exponents for P load.

B values: Three real numbers specifying the coefficients for Q load.

M values: Three real numbers specifying the exponents for Q load.

15.6 Fixed Shunt Data

The data for fixed shunts which are connected to a bus are given in this section. A bus can have more than one shunt connected to it.

The data for fixed shunts are specified on two lines and it consists of the following items:

Bus number: Number of the bus where the shunt is connected (not given when bus identification code is 2).

Bus name: Name of the bus where the shunt is connected (not given when bus identification code is 1).

Admittance: Shunt admittance in MW and MVAR at unity voltage (positive reactive part for capacitance).

Type: Bus shunt type. The following types are available (default 1): 1 - Actual

2 - Equivalent

Fx Sh Owner: 16 characters long ownership ID.

Fx Sh ID: 8 characters long fixed shunt identifier to distinguish among multiple shunts at the same bus.

Fx Sh Status: Fixed shunt status (1 - In service; 0 - Out of service). Default Status is 1.

15.7 Switchable Shunt / SVC / STATCON Data

The data for switchable shunts is given in this section. The switchable shunt and SVC are represented with up to eight blocks of admittance, each of which can consist of up to 99 steps of the specified block admittance.

For local control, the shunt bus voltage is maintained between the V Hi and V Lo limits, as long as the required reactive power can be supplied by the shunt. SVC and STATCON maintain the voltage on the droop characteristic (straight line from V Lo to V Hi).

For remote bus voltage control, the switchable shunt can be regulating the bus voltage by itself or by contributing to the control with other shunts. The switchable shunt contributes to the remote bus voltage regulation, as long as the required reactive power can be supplied and the voltage of the bus, the bus to which the switchable shunt is connected, lies between specified limits.

The switchable shunt / SVC / STATCON data is entered in three lines, the first line consist of the following items:

Bus number: Number of the bus where the shunt is connected (not given when bus identification code is 2).

Bus name: Name of the bus where the shunt is connected (not given when bus identification code is 1).

Mode: Switchable shunt control mode

0 - Frozen 1 - Discrete 2 - Continuous 3 - SVC 4 - STATCON

Status: Status of switchable shunt (0 - Out of service; 1 - In service).

V Hi limit: Switchable shunt bus upper voltage limit in pu (default 1.5).

V Lo limit: Switchable shunt bus lower voltage limit in pu (default 0.5).

Remote bus: Remote bus number and/or name depending on bus identification code.

RMB voltage: Remote bus desired voltage in pu. If there is more than one switchable shunt controlling a bus, the specified desired voltage should be the same for all the switchable shunts.

% Contr: Percent contribution of this shunt to regulate the voltage at the remote bus (0 to 100). It is not necessary that the % contribution of all shunts controlling the same remote bus add up to 100. The reactive power required to regulate the remote bus voltage is split between the controlling shunts according to the % contribution.

Y initial: Initial switchable shunt admittance in MW and MVAR at unity voltage (positive reactive part for capacitance).

SWS owner: 16 characters long ownership ID.

SWS ID: 8 characters long identifier to distinguish between multiple switched shunts at the same bus.

Ni: Number of steps for block i.

Bi: Susceptance increment for each of Ni steps in block i in MVAR at unity

voltage.

There must be 8 [Ni; Bi] pairs. After the first Ni with zero value, the rest of Ni and Bi are set to zero.

The switchable shunt blocks may be entirely inductive or capacitive. In this case, the shunt blocks are in the order in which they are switched on. If both types exist, inductive blocks must be entered first

The second line of the switchable shunt for STATCON data consists of the following items:

SWS ID: 8 characters long identifier to distinguish between multiple shunts at the same bus.

IMAX: STATCON current limit (in Amps).

The third line of the switchable shunt data (SVC or STATCON) consists of the following items:

Equipment Name: 32 characters long equipment name.

Remote High V limit: Remote bus high voltage limit

Remote High V limit: Remote bus low voltage limit.

15.8 Line Data

The AC transmission line data are supplied in this section. The line data is entered in three lines. The first line consists of the following items:

BUS1 number: Number of the FROM bus (not given when bus identification code is 2).

BUS1 name: Name of the FROM bus (not given when bus identification code is 1).

BUS2 number: Number of the TO bus (not given when the bus identification code is 2).

BUS2 name: Name of the TO bus (not given when bus identification code is 1).

Circuit ID: 8 characters line circuit identifier.

Meter end: 1 character metered end identifier used for area interchange control ('F' or blank - FROM; 'T' - TO).

Impedance: Complex impedance of the line in pu. If the magnitude of the line impedance is less than the specified zero impedance threshold, the two ends of the lines are joined when solving the power flow.

Charging: Complex admittance of line charging in pu.

The following items are entered on the second line:

FROM shunt: Complex admittance of the line shunt at the FROM bus in pu.

TO shunt: Complex admittance of the line shunt at the TO bus in pu.

Rating: 6 branch MVA ratings at nominal voltage.

Rating group: Line rating group number (default 1).

Zone: 6 zone numbers. A line can belong to up to 6 different zones. Zone numbers should be the same as that of BUS1 or BUS2.

Type: Line type (default 1). 1 - Normal; 2 - Equivalent line; 3 - Cable

The following items are entered on the third line:

Equipment name 32 characters long line equipment name.

Owner 16 characters long line ownership ID. Default Owner is the owner of the