t = grantedtime
for j in range(0, end_count):
# Model the physics of the battery charging. This happens
# every time step whether a message comes in or not
addenergy = charge_rate[(EVlist[j] - 1)] * (update_interval / 3600)
currentsoc[j] = currentsoc[j] + addenergy / batt_size
logger.debug(f'Added energy {addenergy} to EV at terminal {j}'
f' bringing it to SOC {currentsoc[j]}')
# Check for messages from EV Controller
endpoint_name = h.helicsEndpointGetName(endid[j])
if h.helicsEndpointHasMessage(endid[j]):
msg = h.helicsEndpointGetMessageObject(endid[j])
instructions = h.helicsMessageGetString(msg)
logger.debug(f'Received message at endpoint {endpoint_name}'
f' at time {t}'
f' with command {instructions}')
# Update charging state based on message from controller
# The protocol used by the EV and the EV Controller is simple:
# EV Controller sends "1" - keep charging
# EV Controller sends andything else: stop charging
# The default state is charging (1) so we only need to
# do something if the controller says to stop
if int(instructions) == 0:
# Stop charing this EV and move another one into the
# charging station
_, _, _, newEVtype = get_new_EV(1)
instructions = []
# for t in range(0, total_interval, update_interval): #
# the EV sent its first message at 15min
# start the controller at 15min + 7.5min
grantedtime = h.helicsFederateRequestTime(fed, 22.5 * 60)
# print('EV time: ',grantedtime/3600)
t = grantedtime
while t < total_interval:
for j in range(0, len(enddest_EVsoc)):
# 1. Receive SOC
# print('endpt name: ',h.helicsEndpointGetName(end_EVsoc[j]))
if h.helicsEndpointHasMessage(end_EVsoc[j]):
msg = h.helicsEndpointGetMessageObject(end_EVsoc[j])
currentsoc = h.helicsMessageGetString(msg)
# print('currentsoc: ',currentsoc)
# 2. Send instructions
# destination_name = str(h.helicsEndpointGetDefaultDestination(end_EVsoc[j]))
print(t / 3600, currentsoc)
if float(currentsoc) <= 0.9:
instructions = 1
else:
instructions = 0
message = str(instructions)
h.helicsEndpointSendMessageRaw(end_EVsoc[j], "", message) #
# print('Sent instructions: {}'.format(instructions))
else:
print("NO MESSAGE RECEIVED AT TIME ", t / 3600)